HackageDB: packages by category

Packages by category

Categories: (1), .NET (2), Accessibility (1), Acme (11), Adjunctions (1), AI (31), Algebra (15), Algorithms (72), Animation (3), API (6), Apple (1), Application (14), Application Server (1), Applicative (1), Argumentation (2), Atom (1), Audio (4), AWS (2), Backup (2), Benchmarking (3), Bioinformatics (55), Bit Vectors (5), Browser (5), BSD (1), ByteString (1), CAPTCHA (1), Categories (3), CGI (1), Charts (2), Classification (4), Clckwrks (8), CLI Tool (1), Client (1), Cloud (2), Clustering (7), Code Generation (12), Codec (70), Codecs (2), Combinators (13), Command Line (1), Commerce (1), Comonads (13), Compatibility (1), Compiler (23), Compiler Plugin (4), Compilers/Interpreters (87), Composition (8), Compression (7), Computer Algebra (1), Concurrency (97), Concurrent (7), Conduit (29), Configuration (5), Console (45), Constraints (3), Containers (1), Control (296), CouchDB (1), Crosswords (1), Crypto (1), Cryptography (54), CSV (2), Data (696), Data Flow (1), Data Mining (14), Data Structures (118), Database (147), Datamining (3), Date (1), Debian (3), Debug (25), Demo (3), Dependent Types (13), Desktop (8), Desktop Environment (4), Development (247), Diagnostics (1), Digest (2), Disassembler (2), Distributed Computing (20), Distribution (63), Documentation (10), Download Manager (2), Eden (4), Editor (10), Education (17), Email (5), Embedded (20), Enumerator (24), Error Handling (8), Exceptions (1), Factual (2), Failure (14), Fay (2), Feed (1), FFI (51), FFI Tools (8), File (1), File Manager (2), Filesystem (2), Finance (15), Financial (2), Foreign (49), Foreign Binding (3), Formal Methods (16), FRP (36), Functors (4), Game (108), Game Engine (10), Games (1), Genealogy (1), Generic (2), Generics (52), Gentoo (1), Geometry (2), GHC (12), GIS Programs (1), Git (1), GPU (2), Graph (1), Graphics (293), Graphs (16), GUI (45), Hakyll (1), Happstack (16), Hardware (21), Hash (2), Haskell (3), Haskell2010 (1), Haskell98 (1), Help (2), Heuristics (1), IDE (12), Image (1), Image Processing (1), Image Viewer (2), Indexed (1), Interfaces (4), Interpreter (1), IO-Streams (2), IRC (5), IRC Client (2), Java (4), Javascript (4), JSON (19), JVM (8), LambdaCalculus (1), Language (258), Languages (3), LaTeX (1), Lenses (7), Linear Algebra (1), List (6), Little Game (1), Local Search (1), Logging (7), Logic (11), Logic Programming (2), Logstash (1), LUA (1), Machine Learning (8), Machine Vision (2), Manatee (17), MapReduce (1), Math (247), Mathematics (1), Maths (1), Media (6), Message-Oriented Middleware (3), Metrics (1), Middleware (2), Minecraft (1), Monad (9), Monadic Regions (11), Monads (62), Monitoring (1), Multimedia (1), Multimedia Player (1), Music (55), MusicBrainz (1), Natural Language Processing (57), Network (307), Network APIs (10), NetworkAPIs (1), Networking (7), Noise (2), Ntrol (1), Number Theory (4), Numeric (14), Numerical (40), OAuth (1), Operating System (4), Optimisation (8), Optimization (6), Options (1), Other (7), Parallelism (19), Parser (5), Parsing (98), Pattern Classification (2), Pattern Recognition (1), PDF (4), PDF Viewer (1), Performance (1), Phantom Types (3), Physics (15), Pipes (10), PL/SQL Tools (1), Plotting (1), Polymorphism (2), Prelude (7), Preprocessor (1), Pretty Printer (6), Process Manager (1), Profiling (11), Program Transformation (2), Protocol (3), Proxies (4), Pugs (8), Pup-Events (5), Quantum (1), QuasiQoutes (1), Random (3), Raspberrypi (1), RDF (1), Reactivity (19), Records (3), Recursion (3), Refactoring (2), Reflection (7), Regex (3), Reverse Engineering (2), RFC (1), Robotics (3), RSS (1), RSS/Atom Reader (1), Sample Code (1), Scheduling (2), Science (5), Scientific Simulation (1), Screensaver (1), Scripting (5), Search (6), Security (11), Semantic Web (2), Semigroups (1), Serialization (3), Service (1), Simulation (4), SMT (3), Snap (19), Sound (117), Source Tools (1), Source-tools (8), Statistical Modeling (1), Statistics (24), Stochastic Control (1), Stomp (2), String (2), Subversion (1), Support Vector Machine (1), Symbolic Computation (1), System (330), System.Console (1), Teaching (6), Template (3), Template Haskell (17), Templating (1), Test (2), Testing (83), Text (342), Text Recognition (1), Text.PrettyPrint (1), Theorem Provers (27), Time (5), Tools (12), Trace (8), Transformation (1), Tree (1), Type Inference (1), Type System (20), Typography (4), UI (1), Unification (1), Uniform (4), User Interfaces (46), User-interface (1), Utilities (4), Utility (15), Utils (54), Visual Programming (2), Web (453), Web Server (1), Welcome (1), Workflow (1), XFCE (1), XML (57), XMonad (1), Yampa (1), Yesod (68), Zeromq (1), Unclassified (41).

PortFusion program: high-performance distributed reverse / forward proxy & tunneling for TCP

.NET

hs-dotnet library: Pragmatic .NET interop for Haskell
language-cil library: Manipulating Common Intermediate Language AST

Accessibility

bitspeak program: Proof-of-concept tool for writing using binary choices.

Acme

acme-colosson library: Determines whether it is numberwang.
acme-dont library: A don't construct
acme-hq9plus library: An embedded DSL for the HQ9+ programming language
acme-inator library and program: Evil inventions in the Tri-State area
acme-missiles library: Cause serious international side effects.
acme-now library: An interface to the philosophical and metaphysical "now"
acme-php library: The flexibility of Haskell and the safety of PHP
acme-realworld library: Primitives for manipulating the state of the universe
acme-strfry library: A binding to the glibc strfry function.
acme-year library: Get the current year
monadacme library: The Acme and AcmeT monads.

Adjunctions

adjunctions library: Adjunctions

AI

attoparsec-arff library: An ARFF file parser using Attoparsec
bpann library: backpropagation neuronal network
CarneadesDSL library: An implementation and DSL for the Carneades argumentation model.
creatur library: Framework for artificial life experiments.
CV library: OpenCV based machine vision library
cv-combinators library and programs: Functional Combinators for Computer Vision
Dao program: An interactive knowledge base, natural language interpreter.
Dung library: An implementation of the Dung argumentation frameworks.
Etage library: A general data-flow framework
GA library: Genetic algorithm library
genprog library: Genetic programming library
HasGP library: A Haskell library for inference using Gaussian processes
HaskellNN library: High Performance Neural Network in Haskell
HaVSA library and program: An implementation of the Version Space Algebra learning framework.
hfann library and program: Haskell binding to the FANN library
hgalib library: Haskell Genetic Algorithm Library
hnn library: A minimal Haskell Neural Network Library
HOpenCV library and program: A binding for the OpenCV computer vision library
hpylos program: AI of Pylos game with GLUT interface.
HSGEP library and programs: Gene Expression Programming evolutionary algorithm in Haskell
hVOIDP library and program: Optimal variable selection in chain graphical model.
instinct library: Fast artifical neural networks
liblinear-enumerator library: liblinear iteratee.
mines program: Minesweeper simulation using neural networks
moo library: Genetic algorithm library
sandlib library: SAND data serialization and manipulation library
SimpleEA library: Simple evolutionary algorithm framework.
SoccerFun library and program: Football simulation framework for teaching functional programming
SoccerFunGL library and programs: OpenGL UI for the SoccerFun framework
svm library: A support vector machine written in Haskell
svm-simple library: Medium level, simplified, bindings to libsvm

Algebra

agum library and program: Unification and Matching in an Abelian Group
algebra library: Constructive abstract algebra
clipper library: Haskell API to clipper (2d polygon union/intersection/xor/clipping API)
cmu library and program: Unification in a Commutative Monoid
constructive-algebra library: A library of constructive algebra.
finite-field library: Finite Fields
groups library: Haskell 98 groups
linear library: Linear Algebra
magma library: magma is an algebraic structure consisting a set together with an binary operation.
metamorphic library: metamorphisms: ana . cata or understanding folds and unfolds
nats library: Haskell 98 natural numbers
semigroups library: Haskell 98 semigroups
semigroups-actions library: Semigroups actions
unification-fd library: Simple generic unification algorithms.
yap library: yet another prelude - a simplistic refactoring with algebraic classes

Algorithms

Adaptive library and program: Library for incremental computing.
adp-multi library and programs: ADP for multiple context-free languages
adp-multi-monadiccp library and program: Subword construction in adp-multi using monadiccp
ADPfusion library and program: Efficient, high-level dynamic programming.
arithmoi library: Efficient basic number-theoretic functions. Primes, powers, integer logarithms.
binary-search library: Binary and exponential searches
Binpack library: Common bin-packing heuristics.
cmaes library: CMA-ES wrapper in Haskell
concorde library: Simple interface to the Concorde solver for the Traveling Salesperson Problem
concurrent-sa library: Concurrent simulated annealing system.
cubicspline library: Natural cubic spline interpolation.
DecisionTree library: A very simple implementation of decision trees for discrete attributes.
Diff library: O(ND) diff algorithm in haskell.
DifferentialEvolution library: Global optimization using Differential Evolution
DimensionalHash library: An n-dimensional hash using Morton numbers.
dom-lt library: The Lengauer-Tarjan graph dominators algorithm.
DP library: Pragmatic framework for dynamic programming
edit-distance library and programs: Levenshtein and restricted Damerau-Levenshtein edit distances
equivalence library: Maintaining an equivalence relation implemented as union-find using STT.
ersatz library: A monad for expressing SAT or QSAT problems using observable sharing.
fibonacci library: Fast computation of Fibonacci numbers.
funsat library and program: A modern DPLL-style SAT solver
GA library: Genetic algorithm library
garsia-wachs library: A Functional Implementation of the Garsia-Wachs Algorithm
genprog library: Genetic programming library
Graphalyze library: Graph-Theoretic Analysis library.
GraphSCC library: Tarjan's algorithm for computing the strongly connected components of a graph.
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
heapsort library and programs: Heapsort of MArrays as a demo of imperative programming
hgal library: library for computation automorphism group and canonical labelling of a graph
hlcm library and programs: Fast algorithm for mining closed frequent itemsets
HMM library: A hidden markov model library
hmm library: A hidden markov model library
hps-kmeans library: A nice implementation of the k-Means algorithm.
incremental-sat-solver library: Simple, Incremental SAT Solving as a Library
infinite-search library: Exhaustively searchable infinite sets.
iproute library: IP Routing Table
kmeans library: K-means clustering algorithm
KMP library: Knuth–Morris–Pratt string searching algorithm
lca library: O(log n) persistent on-line lowest common ancestor calculation without preprocessing
LinearSplit library: Partition the sequence of items to the subsequences in the order given
ListTree library: Trees and monadic trees expressed as monadic lists where the underlying monad is a list
majority library: Boyer-Moore Majority Vote Algorithm
markov-chain library: Markov Chains for generating random sequences with a user definable behaviour.
maximal-cliques library: Enumerate all maximal cliques of a graph.
moo library: Genetic algorithm library
Munkres library: Munkres' assignment algorithm (hungarian method)
natural-sort library: User-friendly text collation
Numbers library: An assortment of number theoretic functions
palindromes library and program: Finding palindromes in strings
patience library: Patience diff and longest increasing subsequence
presburger library: Cooper's decision procedure for Presburger arithmetic.
primes library: Efficient, purely functional generation of prime numbers
PropLogic library and program: Propositional Logic
queuelike library: A library of queuelike data structures, both functional and stateful.
rangemin library: Linear range-min algorithms.
sat programs: CNF SATisfier
sat-micro-hs program: A minimal SAT solver
satchmo-backends library: driver for external satchmo backends
satchmo-examples programs: examples that show how to use satchmo
satchmo-funsat library: funsat driver as backend for satchmo
sgd library: Stochastic gradient descent
smartGroup library: group strings or bytestrings by words in common
svm-simple library: Medium level, simplified, bindings to libsvm
teams library: Graphical modeling tools for sequential teams
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
TrieMap library: Automatic type inference of generalized tries with Template Haskell.
unification-fd library: Simple generic unification algorithms.
union-find library: Efficient union and equivalence testing of sets.
union-find-array library: union find data structure
wordsearch library and program: A word search solver library and executable
yices-easy library: Simple interface to the Yices SMT (SAT modulo theories) solver.

Animation

cal3d library: Haskell binding to the Cal3D animation library.
cal3d-examples programs: Examples for the Cal3d animation library.
cal3d-opengl library: OpenGL rendering for the Cal3D animation library

API

factual-api library: A driver for the Factual API
rdioh library and programs: A Haskell wrapper for Rdio's API.
tablestorage library: Azure Table Storage REST API Wrapper
themoviedb library and program: Haskell API bindings for http://themoviedb.org
uploadcare library: Haskell client for Uploadcare.
weather-api library: Weather api implemented in haskell

Apple

hs-pkpass library: A library for Passbook pass creation & signing

Application

epub-tools programs: Command line utilities for working with epub files
follower program: Follow Tweets anonymously
ghclive library and program: Interactive Haskell interpreter in a browser.
graph-rewriting-lambdascope program: Implementation of Lambdascope as an interactive graph-rewriting system
graph-rewriting-ski programs: Two implementations of the SKI combinators as interactive graph rewrite systems
graph-rewriting-trs program: ...
graph-rewriting-ww program: Interactive reduction of lambda-calculus with explicit sharing
hscrtmpl program: Haskell shell script template
iptadmin program: web-interface for iptables
pb program: pastebin command line application
photoname program: Rename JPEG photo files based on shoot date
sshtun program: Wrapper daemon to manage an ssh tunnel
thimk programs: Command-line spelling word suggestion tool
traypoweroff program: Tray Icon application to PowerOff / Reboot computer

Application Server

MFlow library: continuation-based Web framework without continuations.

Applicative

uu-interleaved library: ...

Argumentation

CarneadesDSL library: An implementation and DSL for the Carneades argumentation model.
Dung library: An implementation of the Dung argumentation frameworks.

Atom

manatee-reader library and program: Feed reader extension for Manatee.

Audio

HGamer3D-SFML-Binding library: Windows Game Engine for the Haskell Programmer - SFML Bindings
libtagc library: Binding to TagLib C library.
MusicBrainz-libdiscid library: Binding to libdiscid by MusicBrainz
taglib-api library: An FFI layer over TagLib's C bindings

AWS

aws library and programs: Amazon Web Services (AWS) for Haskell
aws-sdk library: AWS SDK for Haskell

Backup

bkr library and program: Backup utility for backing up to cloud storage services (S3 only right now)
multiplicity program: Wrapper program for duplicity, adding config files

Benchmarking

containers-benchmark program: Extensive benchmark suite for containers package.
criterion library: Robust, reliable performance measurement and analysis
fibon programs: Tools for running and analyzing Haskell benchmarks

Bioinformatics

a50 program: Compare genome assemblies
adp-multi library and programs: ADP for multiple context-free languages
adp-multi-monadiccp library and program: Subword construction in adp-multi using monadiccp
ADPfusion library and program: Efficient, high-level dynamic programming.
bamstats library and program: A program to extract various information from BAM alignmnet files.
bio library and programs: A bioinformatics library
bioace library: Library for reading ace assembly files
bioalign library: Data structures and helper functions for calculating alignments
Biobase library: Base library for bioinformatics
BiobaseDotP library: Vienna / DotBracket / ExtSS parsers
BiobaseFasta library and program: Iteratee-based FASTA parser
BiobaseFR3D library: Importer for FR3D resources
BiobaseInfernal library: Infernal data structures and tools
BiobaseMAF library: Multiple Alignment Format
BiobaseTrainingData library and program: RNA folding training data
BiobaseTurner library: Import Turner RNA parameters
BiobaseTypes library: (deprecated) Ring class, with several instances.
BiobaseVienna library: Import Vienna energy parameters
BiobaseXNA library and program: Efficient RNA/DNA representations
biocore library: A bioinformatics library
biofasta library: Library for reading fasta sequence files
biofastq library: A library for reading FASTQ files
biophd library: Library for reading phd sequence files
biopsl library and programs: Library and executables for working with PSL files
biosff library and program: Library and executables for working with SFF files
biostockholm library: Parsing and rendering of Stockholm files (used by Pfam, Rfam and Infernal).
blastxml library: Library for reading Blast XML output
clustertools programs: Tools for manipulating sequence clusters
CMCompare library and program: Infernal covariance model comparison
dephd programs: Analyze quality of nucleotide sequences.
estreps programs: Repeats from ESTs
flower programs: Analyze 454 flowgrams (.SFF files)
flowsim programs: Simulate 454 pyrosequencing
gact program: General Alignment Clustering Tool
hemokit library and programs: Haskell port of the Emokit EEG project
korfu program: The Korfu ORF Utility
MC-Fold-DP library and program: Folding algorithm based on nucleotide cyclic motifs.
Nussinov78 library and program: Nussinov78 using the ADPfusion library.
PDBtools library and program: A library for analysis of 3-D protein coordinates
phybin program: Utility for binning phylogenetic trees in Newick format.
rbr programs: Mask nucleotide (EST) sequences in Fasta format
RNAFold library and program: RNA secondary structure prediction
RNAFoldProgs programs: RNA secondary structure folding
RNAwolf library and programs: RNA folding with non-canonical basepairs and base-triplets.
samtools library and program: Binding to the C samtools library
samtools-enumerator library: Enumerator interface to SamTools library
samtools-iteratee library and program: Iteratee interface to SamTools library
seqloc library: Handle sequence locations for bioinformatics
seqloc-datafiles library and programs: Read and write BED and GTF format genome annotations
sgrep program: Sgrep - grep Fasta files for sequences matching a regular expression
simseq program: Simulate sequencing with different models for priming and errors
trimpolya program: Search for, annotate and trim poly-A tail
ViennaRNA-bindings library: ViennaRNA v2 bindings
xml2x program: Convert BLAST output in XML format to CSV or HTML
xsact programs: Cluster EST sequences

Bit Vectors

bit-vector library: Simple bit vectors for Haskell
bitvec library: Unboxed vectors of bits / dense IntSets
bitwise library: fast multi-dimensional unboxed bit packed Bool arrays
bv library and program: Bit-vector arithmetic library
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.

Browser

GoogleSuggest library: Interface to Google Suggest API
hbro library and program: Minimal KISS compliant browser
hbro-contrib library: Third-party extensions to hbro.
manatee-browser library and program: Browser extension for Manatee.
webdriver library: a Haskell client for the Selenium WebDriver protocol

BSD

bsd-sysctl library: Access to the BSD sysctl(3) interface

ByteString

stringable library: A Stringable type class, in the spirit of Foldable and Traversable

CAPTCHA

antigate library: Interface for antigate.com captcha recognition API

CGI

cgi-utils library: Simple modular utilities for CGI/FastCGI (sessions, etc.)

Charts

Histogram library
textPlot library: Plot functions in text.

Classification

HasGP library: A Haskell library for inference using Gaussian processes
hslibsvm library: A FFI binding to libsvm.
HSvm library: Haskell Bindings for libsvm
liblinear-enumerator library: liblinear iteratee.

Clckwrks

clckwrks library: A secure, reliable content management system (CMS) and blogging platform
clckwrks-cli program: a command-line interface for adminstrating some aspects of clckwrks
clckwrks-plugin-bugs library: bug tracking plugin for clckwrks
clckwrks-plugin-ircbot library: ircbot plugin for clckwrks
clckwrks-plugin-media library: media plugin for clckwrks
clckwrks-plugin-page library: support for CMS/Blogging in clckwrks
clckwrks-theme-bootstrap library: simple bootstrap based template for clckwrks
clckwrks-theme-geo-bootstrap library: geo bootstrap based template for clckwrks

CLI Tool

eddie program: Command line file filtering with haskell

Client

stomp-queue library: Stompl Client Library

Cloud

aws library and programs: Amazon Web Services (AWS) for Haskell
aws-sdk library: AWS SDK for Haskell

Clustering

gsc-weighting library: Generic implementation of Gerstein/Sonnhammer/Chothia weighting.
hieraclus library: Automated clustering of arbitrary elements in Haskell.
hierarchical-clustering library: Fast algorithms for single, average/UPGMA and complete linkage clustering.
hierarchical-clustering-diagrams library: Draw diagrams of dendrograms made by hierarchical-clustering.
hps-kmeans library: A nice implementation of the k-Means algorithm.
hsgsom library: An implementation of the GSOM clustering algorithm.
kmeans library: K-means clustering algorithm

Code Generation

flexible-defaults library: Generate default function implementations for complex type classes.
harpy library: Runtime code generation for x86 machine code
hburg program: Haskell Bottom Up Rewrite Generator
llvm library: Bindings to the LLVM compiler toolkit.
llvm-base library: FFI bindings to the LLVM compiler toolkit.
llvm-base-util library: Utilities for bindings to the LLVM compiler toolkit.
llvm-extra library and programs: Utility functions for the llvm interface
llvm-general library: General purpose LLVM bindings
llvm-tf library: Bindings to the LLVM compiler toolkit using type families.
passage library: Parallel code generation for hierarchical Bayesian modeling.
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
sugarhaskell programs: Library-based syntactic extensibility for Haskell

Codec

AC-PPM library: Trivial package for writing PPM images.
base64-string library: Base64 implementation for String's.
bitmaps library: Bitmap library
bmp library: Read and write uncompressed BMP image files.
bzlib library: Compression and decompression in the bzip2 format
bzlib-conduit library: Streaming compression/decompression via conduits.
cityhash library: Bindings to CityHash
Codec-Compression-LZF library: LZF compression bindings.
codec-mbox library: A library to read and write mailboxes in mbox format
compression library: Common compression algorithms.
crockford library: An implementation of Douglas Crockford's base32 encoding.
Crypto library and programs: Collects together existing Haskell cryptographic functions into a package
dataenc library and program: Data encoding library
deunicode program: Get rid of unicode (utf-8) symbols in Haskell sources
embroidery library and program: support for embroidery formats in haskell
Encode library and programs: Encoding character data
encoding library: A library for various character encodings
epub-metadata library: Library for parsing and manipulating EPUB files and OPF package data
fec library: Forward error correction of ByteStrings
fountain library: A fountain codec.
gnuidn library: Bindings for GNU IDN
gray-code library: Gray code encoder/decoder.
HCodecs library: A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files.
hecc library: Elliptic Curve Cryptography for Haskell
hogg library and programs: Library and tools to manipulate the Ogg container format
hOpenPGP library: native Haskell implementation of OpenPGP (RFC4880)
htar program: Command-line tar archive utility.
iff library: Constructing and dissecting IFF files
iteratee-compress library: Enumeratees for compressing and decompressing streams
JuicyPixels library: Picture loading/serialization (in png, jpeg, bitmap, gif, tiff and radiance)
LibZip library: Bindings to libzip, a library for manipulating zip archives.
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
lz4 library: LZ4 compression for ByteStrings
lzma-conduit library: Conduit interface for lzma/xz compression.
lzma-enumerator library: Enumerator interface for lzma/xz compression.
mime library: Working with MIME types.
mime-string library: MIME implementation for String's.
mp3decoder program: MP3 decoder for teaching.
mucipher library: A library to produce simple ciphers for use with lambdabot.
nano-hmac library: Bindings to OpenSSL HMAC.
nano-md5 library: Efficient, ByteString bindings to OpenSSL.
netpbm library: Loading PBM, PGM, PPM image files
omnicodec programs: data encoding and decoding command line utilities
openpgp-asciiarmor library: OpenPGP (RFC4880) ASCII Armor codec
ppm library: a tiny PPM image generator
qrcode library: QR Code library in pure Haskell
quicklz library: QuickLZ compression for ByteStrings
RSA library and program: Implementation of RSA, using the padding schemes of PKCS#1 v2.1.
sandi library: Data encoding library
sexpr library and program: S-expression printer and parser
SHA library and programs: Implementations of the SHA suite of message digest functions
snappy library: Bindings to the Google Snappy library for fast compression/decompression
snappy-iteratee library: An enumeratee that uses Google's snappy compression library.
sndfile-enumerators library: Audio file reading/writing
snow-white library: encode any binary instance to white space
stb-image library: A wrapper around Sean Barrett's JPEG/PNG decoder
tar library: Reading, writing and manipulating ".tar" archive files.
text-locale-encoding library: Encode and decode Text to/from ByteString using TextEncoding
Twofish library: An implementation of the Twofish Symmetric-key cipher.
uconv library: String encoding conversion with ICU
utf8-light library: Unicode
utf8-string library: Support for reading and writing UTF8 Strings
xlsx library and program: Simple and incomplete Excel file parser/writer
xlsx-templater library and program: Simple and incomplete Excel file templater
yajl library: Bindings for YAJL, an event-based JSON implementation
zip-archive library and program: Library for creating and modifying zip archives.
zip-conduit library: Working with zip archives via conduits.
zlib library: Compression and decompression in the gzip and zlib formats
zlib-bindings library: Low-level bindings to the zlib package.
zlib-enum program: Enumerator interface for zlib compression

Codecs

Codec-Image-DevIL library: An FFI interface to the DevIL library
pngload library: Pure Haskell loader for PNG images

Combinators

data-aviary library: Combinator birds.
DeepArrow library: Arrows for "deep application"
functional-arrow library: Combinators that allow for a more functional/monadic style of Arrow programming
JSON-Combinator library: A combinator library on top of a generalised JSON type
JSON-Combinator-Examples library: Example uses of the JSON-Combinator library.
plumbers library: Pointless plumbing combinators
pointless-fun library: Some common point-free combinators.
predicates library: A couple of convenience functions for forming predicates.
prelude-extras library: Haskell 98 - higher order versions of Prelude classes
reverse-apply library: Standard version of the reverse apply operator.
scc library and program: Streaming component combinators
sec library: Semantic Editor Combinators.
syb-extras library: Higher order versions of the Scrap Your Boilerplate classes

Command Line

ReadArgs library and program: Simple command line argument parsing

Commerce

turni program: shifts scheduling tool

Comonads

category-extras library: A meta-package documenting various packages inspired by category theory
comonad library: Haskell 98 compatible comonads
comonad-extras library: Comonad transformers requiring extensions to Haskell 98
comonad-transformers library: Comonad transformers
comonads-fd library: Comonad transformers using functional dependencies
data-lens library: Haskell 98 Lenses
data-lens-fd library: Lenses
data-lens-ixset library: A Lens for IxSet
kan-extensions library: Kan extensions, the Yoneda lemma, and (co)density (co)monads
representable-tries library: Tries from representations of polynomial functors
rivers library: Rivers are like Streams, but different.
semigroupoids library: Haskell 98 semigroupoids: Category sans id
streams library: Various Haskell 2010 stream comonads

Compatibility

transformers-compat library: ...

Compiler

ajhc library and programs: Haskell compiler that produce binary through C language
alpha program: A compiler for the Alpha language
circ library: A Compiler IR Compiler.
Elm library and programs: The Elm language module.
elm-server program: The Elm language server.
feldspar-compiler library and program: Compiler for the Feldspar language
flite library and programs: f-lite compiler, interpreter and libraries
formal program: A statically typed, functional programming language
forml program: A statically typed, functional programming language
gf library and program: Grammatical Framework
hackager program: Hackage testing tool
hcc program: A toy C compiler.
hgom program: An haskell port of the java version of gom
hs2bf program: Haskell to Brainfuck compiler
KiCS library and programs: A compiler from Curry to Haskell
lambda2js program: Untyped Lambda calculus to JavaScript compiler
lhc programs: LHC Haskell Compiler
optimusprime program: A supercompiler for f-lite
statechart program: Compiles Rhapsody statecharts to C.
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
supero program: A Supercompiler
tiger program: Tiger Compiler of Universiteit Utrecht

Compiler Plugin

const-math-ghc-plugin library: Compiler plugin for constant math elimination
cse-ghc-plugin library: Compiler plugin for common subexpression elimination
strict-ghc-plugin library: Compiler plugin for making Haskell strict
unroll-ghc-plugin library: Compiler plugin for loop unrolling

Compilers/Interpreters

accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
alms program: a practical affine language
amrun program: Interpreter for AM
asic program: Action Script Instrumentation Compiler
asil library: Action Script Instrumentation Library
atuin program: Embedded Turtle language compiler in Haskell, with Epic output
baskell program: An interpreter for a small functional language
Befunge93 program: An interpreter for the Befunge-93 Programming Language
bound library: Making de Bruijn Succ Less
brainfuck library and program: Brainfuck interpreter
cfopu program: cfopu processor
cnc-spec-compiler program: Compiler/Translator for CnC Specification Files.
CPBrainfuck program: A simple Brainfuck interpretter.
CPL program: An interpreter of Hagino's Categorical Programming Language (CPL).
ddc-base library: Disciplined Disciple Compiler common utilities.
ddc-build library: Disciplined Disciple Compiler build framework.
ddc-code library: Disciplined Disciple Compiler base libraries.
ddc-core library: Disciplined Disciple Compiler core language and type checker.
ddc-core-eval library: Disciplined Disciple Compiler semantic evaluator for the core language.
ddc-core-llvm library: Disciplined Disciple Compiler LLVM code generator.
ddc-core-salt library: Disciplined Disciple Compiler C code generator.
ddc-core-simpl library: Disciplined Disciple Compiler code transformations.
ddc-driver library: Disciplined Disciple Compiler top-level driver.
ddc-tools programs: Disciplined Disciple Compiler command line tools.
ddc-war program: Disciplined Disciple Compiler test driver and buildbot.
ddci-core program: Disciple Core language interactive interpreter.
dedukti library and programs: A type-checker for the λΠ-modulo calculus.
egison library and program: An Interpreter for the Programming Language Egison
epic library and program: Compiler for a simple functional language
fst library and program: Finite state transducers
Fungi program: An interpreter for Funge-98 programming languages, including Befunge.
ghci-haskeline program: An implementation of ghci using the Haskeline line-input library.
ghclive library and program: Interactive Haskell interpreter in a browser.
graph-rewriting-lambdascope program: Implementation of Lambdascope as an interactive graph-rewriting system
graph-rewriting-ski programs: Two implementations of the SKI combinators as interactive graph rewrite systems
graph-rewriting-ww program: Interactive reduction of lambda-calculus with explicit sharing
HARM library and programs: A simple ARM emulator in haskell
Haschoo program: Minimalist R5RS Scheme interpreter
haskeem program: A small scheme interpreter
helisp program: An incomplete Elisp compiler
hiccup program: Relatively efficient Tcl interpreter with support for basic operations
hint library: Runtime Haskell interpreter (GHC API wrapper)
hint-server library: A server process that runs hint.
hjs library and program: JavaScript Parser
hoe program: Haskell One-liner Evaluator
hoopl library: A library to support dataflow analysis and optimization
husk-scheme library and programs: R5RS Scheme interpreter, compiler, and library.
husk-scheme-libs library: Extra libraries for the husk Scheme platform.
hybrid program: A implementation of a type-checker for Lambda-H
idris program: Functional Programming Language with Dependent Types
INblobs program: Editor and interpreter for Interaction Nets
lambda-ast library: Lambda Calculi Abstract Syntax Trees
lambdacube program: A simple lambda cube type checker.
LambdaShell program: Simple shell for evaluating lambda expressions
llvm library: Bindings to the LLVM compiler toolkit.
llvm-base library: FFI bindings to the LLVM compiler toolkit.
llvm-base-util library: Utilities for bindings to the LLVM compiler toolkit.
llvm-extra library and programs: Utility functions for the llvm interface
llvm-general library: General purpose LLVM bindings
llvm-tf library: Bindings to the LLVM compiler toolkit using type families.
lvmlib library and program: The Lazy Virtual Machine (LVM).
noodle library and programs: the noodle programming language
omega program: A purely functional programming language and a proof system
peg program: a lazy non-deterministic concatenative programming language
pesca program: Proof Editor for Sequent Calculus
piet library and program: A Piet interpreter
risc386 program: Reduced instruction set i386 simulator
secdh library and program: SECDH Machine Simulator
simple-atom library: Atom (or symbol) datatype for fast comparision and sorting.
simple-pascal library and program: Simplified Pascal language to SSVM compiler
simple-stacked-vm library and program: Simple stacked virtual machine: assembler, disassembler, bytecode interpreter
soyuz library and program: DCPU-16 architecture utilities for Notch's 0x10c game.
swf library: A library for creating Shockwave Flash (SWF) files
tempus program: Interpreter for the FRP language Tempus
textmatetags program: A simple Haskell program to provide tags for Haskell code completion in TextMate
TinyLaunchbury library: Simple implementation of call-by-need using Launchbury's semantics
transf library and program: Text transformer and interpreter.
TypeIlluminator program: TypeIlluminator is a prototype tool exploring debugging of type errors/
unbound library: Generic support for programming with names and binders
unification-fd library: Simple generic unification algorithms.
unlambda library and program: Unlambda interpreter
vintage-basic program: Interpreter for microcomputer-era BASIC
whitespace program: Whitespace, an esoteric programming language.

Composition

higherorder library: Some higher order functions for Bool and []
hofix-mtl library: defining @mtl@-ready monads as * -> * fixed-points
plumbers library: Pointless plumbing combinators
pointless-fun library: Some common point-free combinators.
reverse-apply library: Standard version of the reverse apply operator.
star-to-star library: the * -> * types, operators, and covariant instances.
star-to-star-contra library: contravariant instances for * -> * types and operators.
TypeCompose library: Type composition classes & instances

Compression

compressed library: Compressed containers and reducers
huffman library: Pure Haskell implementation of the Huffman encoding algorithm
lzma-conduit library: Conduit interface for lzma/xz compression.
lzma-enumerator library: Enumerator interface for lzma/xz compression.
pipes-zlib library: Pipes to deal with zlib compressed data.
snappy library: Bindings to the Google Snappy library for fast compression/decompression
zlib-enum program: Enumerator interface for zlib compression

Computer Algebra

cash library: the Computer Algebra SHell

Concurrency

accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
actor library: Actors with multi-headed receive clauses
async library: Run IO operations asynchronously and wait for their results
AVar library: Mutable variables with Exception handling and concurrency support.
bits-atomic library and program: Atomic bit operations on memory locations for low-level synchronization
blocking-transactions library: Composable, blocking transactions.
BoundedChan library: Implementation of bounded channels.
caf library: A library of Concurrency Abstractions using Futures.
chan-split library: Concurrent Chans as read/write pairs. Also provides generic Chan pair class.
chp library: An implementation of concurrency ideas from Communicating Sequential Processes
chp-mtl library: MTL class instances for the CHP library
chp-plus library: A set of high-level concurrency utilities built on Communicating Haskell Processes
chp-spec library: A mirror implementation of chp that generates a specification of the program
chp-transformers library: Transformers instances for the CHP library
clocked library: timer functionality to clock IO commands
cml library: Events and Channels as in Concurrent ML
concurrent-barrier library: Simple thread barriers
concurrent-extra library: Extra concurrency primitives
concurrent-sa library: Concurrent simulated annealing system.
concurrent-supply library: A fast concurrent unique identifier supply with a pure API
coroutine-enumerator library: Bridge between the monad-coroutine and enumerator packages.
coroutine-iteratee library: Bridge between the monad-coroutine and iteratee packages.
CSPM-CoreLanguage library: Definition of a FDR-compatible CSP core-language.
CSPM-cspm library and program: cspm command line tool for analyzing CSPM specifications.
CSPM-FiringRules library: Firing rules semantic of CSPM
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.91
CSPM-Interpreter library: An interpreter for CSPM
cspmchecker programs: A command line type checker for CSPM files.
data-ivar library: Write-once variables with concurrency support
data-timeout library: 64-bit timeouts of nanosecond precision
epass library: Baisc, Erlang-like message passing supporting sockets.
eprocess library: *Very* basic Erlang-like process support for Haskell
expiring-mvar library: Create values which expire after a period of time.
future library: Supposed to mimics and enhance proposed C++ "future" features
global-lock library: A global lock implemented without unsafePerformIO
hactors library: Practical actors for Haskell.
hint-server library: A server process that runs hint.
hydra-print library and programs: NCurses interface to view multiple ByteString streams in parallel.
ivar-simple library: Write once concurrency primitives.
join library: Parallel Join Patterns with Guards and Propagation
libcspm library: A library providing a parser, type checker and evaluator for CSPM.
lifted-async library: Run lifted IO operations asynchronously and wait for their results
lub library: information operators: least upper bound (lub) and greatest lower bound (glb)
monad-coroutine library: Coroutine monad transformer for suspending and resuming monadic computations
monadIO library: Overloading of concurrency variables
mstate library: MState: A consistent State monad for concurrent applications.
multisetrewrite library: Multi-set rewrite rules with guards and a parallel execution scheme
named-lock library: A named lock that is created on demand.
parallel-io library and programs: Combinators for executing IO actions in parallel on a thread pool.
parallel-tree-search library: Parallel Tree Search
pipes-concurrency library: Concurrency for the pipes ecosystem
priority-sync library and program: Cooperative task prioritization.
PriorityChansConverger library: Read single output from an array of inputs - channels with priorities
privileged-concurrency library: Provides privilege separated versions of the concurrency primitives.
reactor library: Reactor - task parallel reactive programming
rwlock library: Multiple-read / single-write locks
SafeSemaphore library: Much safer replacement for QSemN, QSem, and SampleVar
scc library and program: Streaming component combinators
semaphore-plus library: Various concurrency abstractions built on top of semaphores
simple-actors library: A library for more structured concurrent programming, based on the Actor Model
sirkel library: Sirkel, a Chord DHT
spawn library: Tiny library for concurrent computations
speculation library: A framework for safe, programmable, speculative parallelism
split-channel library: Control.Concurrent.Chan split into sending and receiving halves.
stm library: Software Transactional Memory
stm-channelize library: Transactional I/O for duplex streams
stm-chans library: Additional types of channels for STM.
stm-conduit library: Introduces conduits to channels, and promotes using conduits concurrently.
stm-io-hooks library: STM with IO hooks
stm-orelse-io library: Choose between the return value of an STM operation and an IO action.
stm-promise library: Simple STM Promises for IO computations and external processes
stm-stats library: retry statistics for STM transactions
stmcontrol library: Control communication among retrying transactions
suspend library: Simple package that allows for long thread suspensions.
sync library: A fast implementation of synchronous channels with a CML-like API
synchronous-channels library: Synchronous communication channels
tag-bits library: Provides access to the dynamic pointer tagging bits used by GHC.
tbox library: Transactional variables and data structures with IO hooks
thespian library: Lightweight Erlang-style actors for Haskell
threadmanager library: Simple thread management
ThreadObjects library: Mutable objects that reside in their own threads.
threads library: Fork threads and wait for their result
timeout-control library: Updatable timeouts as a Monad transformer
timeout-with-results library: Runs a time-limited computation alowing it to return intermediate results.
timers library: Simple package that implements timers.
timers-updatable library: timers which are updatable in the remaining time
tskiplist library: A Skip List Implementation in STM
twilight-stm library: STM library with safe irrevocable I/O and inconsistency repair
unamb library and program: Unambiguous choice
unamb-custom library: Functional concurrency with unamb using a custom scheduler.
unbounded-delays library: Unbounded thread delays and timeouts
unsafe-promises library: Create pure futures using lazy IO.
waitfree library: A wrapping library for waitfree computation.

Concurrent

concurrent-split library: MVars and Channels with distinguished input and output side
forkable-monad library: An implementation of forkIO for monad stacks.
lockfree-queue library: Michael and Scott lock-free queues.
net-concurrent library: Concurrent over the network execution library
sirkel library: Sirkel, a Chord DHT
spawn library: Tiny library for concurrent computations
stm-split library: TMVars, TVars and TChans with distinguished input and output side

Conduit

attoparsec-conduit library: Consume attoparsec parsers via conduit.
base64-conduit library: Base64-encode and decode streams of bytes.
binary-conduit library: data serialization/deserialization conduit library
bits-conduit library: Bitstream support for Conduit
blaze-builder-conduit library: Convert streams of builders to streams of bytestrings.
cereal-conduit library: Turn Data.Serialize Gets and Puts into Sources, Sinks, and Conduits
conduit library: Streaming data processing library.
conduit-resumablesink library: Allows conduit to resume sinks to feed multiple sources into it.
couchdb-conduit library: Couch DB client library using http-conduit and aeson
crypto-conduit library: Conduit interface for cryptographic operations (from crypto-api).
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
filesystem-conduit library: Use system-filepath data types with conduits.
fluent-logger-conduit library: Conduit interface for fluent-logger
ftp-conduit library: FTP client package with conduit interface based off http-conduit
html-conduit library: Parse HTML documents using xml-conduit datatypes.
http-conduit library: HTTP client package with conduit interface and HTTPS support.
http-conduit-browser library: Browser interface to the http-conduit package
imagesize-conduit library: Determine the size of some common image formats.
jsonrpc-conduit library and program: JSON-RPC 2.0 server over a Conduit.
lzma-conduit library: Conduit interface for lzma/xz compression.
network-conduit library: Stream socket data using conduits.
pool-conduit library: Resource pool allocations via ResourceT.
process-conduit library: Conduits for processes
resourcet library: Deterministic allocation and freeing of scarce resources.
stm-conduit library: Introduces conduits to channels, and promotes using conduits concurrently.
tagstream-conduit library: streamlined html tag parser
xml-conduit library: Pure-Haskell utilities for dealing with XML with the conduit package.
zip-conduit library: Working with zip archives via conduits.
zlib-conduit library: Streaming compression/decompression via conduits.

Configuration

Configger library: Parse config files
configurator library: Configuration management
dyre library: Dynamic reconfiguration in Haskell
global-config library: Global mutable configuration
yaml-config library: Configuration management

Console

cltw program: Command line Twitter utility
cmdargs library and program: Command line argument processing
cmdargs-browser program: Helper to enter cmdargs command lines using a web browser
cmdtheline library: Declarative command-line option parsing and documentation library.
dapi program: Prints a series of dates
epub-tools programs: Command line utilities for working with epub files
equal-files program: Shell command for finding equal files
follower program: Follow Tweets anonymously
ginsu program: Ginsu Gale Client
hascal library and program: A minimalistic but extensible and precise calculator
haskdeep program: Computes and audits file hashes.
hello program: Hello World, an example package
hflags library: Command line flag parser, very similar to Google's gflags
historian program: Extract the interesting bits from shell history
hranker program: Basic utility for ranking a list of items
hscrtmpl program: Haskell shell script template
hscurses-fish-ex program: hscurses swimming fish example
hskeleton library: Skeleton for new Haskell programs
hspresent library and program: A terminal presentation tool
hunp program: Unpacker tool with DWIM
husky program: A simple command line calculator.
internetmarke program: Shell command for constructing custom stamps for German Post
ip6addr programs: Command-line tools to deal with IPv6 Addresses text representation
matchers library: Text matchers
mdo program: Command-line tool to run a command on each of the items.
misfortune library and programs: fortune-mod clone
multiarg library: Combinators to build command line parsers
only program: A grep-like tool for filtering on words or lines.
options library: Parsing command-line options
parse-help library: generate command line arguments from a --help output
pasty program: A simple command line pasting utility
pb program: pastebin command line application
penny-bin programs: Extensible double-entry accounting system - binary and documentation
penny-lib programs: Extensible double-entry accounting system - library
photoname program: Rename JPEG photo files based on shoot date
pwstore-cli program: Command line interface for the pwstore library
readline library: An interface to the GNU readline library
runghc program: runghc replacement for fast repeated runs
spelling-suggest library and programs: Spelling suggestion tool with library and command-line interfaces.
thimk programs: Command-line spelling word suggestion tool
timecalc program
tkhs programs: Simple Presentation Utility
toilet program: Manage the toilet queue at the IMO
txt-sushi library and programs: The SQL link in your *NIX chain
ztail program: Multi-file, colored, filtered log tailer.

Constraints

constraints library: Constraint manipulation
exists library: Existential datatypes holding evidence of constraints
Top library and program: Constraint solving framework employed by the Helium Compiler.

Containers

keys library: Keyed functors and containers

Control

AbortT-monadstf library: Monads-tf instances for the AbortT monad transformer.
AbortT-mtl library: mtl instances for the AbortT monad transformer
AbortT-transformers library: A monad and monadic transformer providing "abort" functionality
abstract-par library: Type classes generalizing the functionality of the 'monad-par' library.
action-permutations library: Execute a set of actions (e.g. parsers) in each possible order
Adaptive-Blaisorblade library and program: Library for incremental computing.
allocated-processor library: Functional combinators for monadic actions that require allocation and de-allocation
applicative-extras library: Instances for Applicative
arrow-list library: List arrows for Haskell.
arrowapply-utils library: Utilities for working with ArrowApply instances more naturally
arrows library: Arrow classes and transformers
assert library: Helpers for Control.Exception.assert
atl library: Arrow Transformer Library
backward-state library: A state monad that runs the state in reverse through the computation
barrier-monad library: Implementation of barrier monad, can use custom front/back type
basic-prelude library: An enhanced core prelude; a common foundation for alternate preludes.
billeksah-main program: Leksah plugin base
billeksah-main-static program: Leksah plugin base
billeksah-services library: Leksah library
bytestring-progress library: A library for tracking the consumption of a lazy ByteString
bytestring-rematch library: Rematch support for ByteString
Catana library: A monad for complex manipulation of a stream.
catch-fd library: MonadThrow and MonadCatch, using functional dependencies
categories library: Categories
category-extras library: A meta-package documenting various packages inspired by category theory
CC-delcont library: Delimited continuations and dynamically scoped variables
CC-delcont-alt library: Three new monad transformers for multi-prompt delimited control
CC-delcont-cxe library: A monad transformers for multi-prompt delimited control
CC-delcont-exc library: A monad transformers for multi-prompt delimited control
CC-delcont-ref library: A monad transformers for multi-prompt delimited control using refercence cells
CC-delcont-ref-tf library: A monad transformers for multi-prompt delimited control using refercence cells
cflp library: Constraint Functional-Logic Programming in Haskell
classy-parallel library: Fork of the monad-parallel package using monad-control
classy-prelude library: A typeclass-based Prelude.
classy-prelude-conduit library: conduit instances for classy-prelude
classy-prelude-yesod library: Provide a classy prelude including common Yesod functionality.
ClassyPrelude library: Prelude replacement using classes instead of concrete types where reasonable
Clean library: A light, clean and powerful utility library
comonad library: Haskell 98 compatible comonads
comonad-extras library: Comonad transformers requiring extensions to Haskell 98
comonad-random library: Comonadic interface for random values
comonad-transformers library: Comonad transformers
comonads-fd library: Comonad transformers using functional dependencies
concatenative library: A library for postfix control flow.
cond library: Basic conditional and boolean operators with monadic variants.
Configurable library: Declare types as Configurable then specialize them all in one place
constrained-normal library: Normalised Deep Embeddings for Constrained Type-Class Instances
ConstraintKinds library: Repackages standard type classes with the ConstraintKinds extension
ContArrow library: Control.Arrow.Transformer.Cont
continue library: Monads with suspension and arbitrary-spot reentry
contravariant library: Contravariant functors
control-bool library: Useful combinators for boolean expressions
control-event library: Event scheduling system.
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-free library: Free monads and monad transformers
control-monad-loop library: Simple monad transformer for imperative-style loops
Control-Monad-MultiPass library: A Library for Writing Multi-Pass Algorithms.
control-monad-omega library: A breadth-first list monad.
control-monad-queue library: Reusable corecursive queues, via continuations.
Control-Monad-ST2 library: A variation on the ST monad with two type parameters.
contstuff library: Fast, easy to use CPS-based monad transformers
Coroutine library: Type-safe coroutines using lightweight session types.
coroutine-object library: Object-oriented programming realization using coroutine
cr program: Code review tool
custom-prelude library: An enhanced prelude, serving as a foundation for my projects
daemons library and programs: Daemons in Haskell made fun and easy
data-lens library: Haskell 98 Lenses
data-lens-fd library: Lenses
data-lens-ixset library: A Lens for IxSet
decepticons library: The categorical dual of transformers.
DeepArrow library: Arrows for "deep application"
deepseq library: Deep evaluation of data structures
deepseq-generics library: GHC.Generics-based Control.DeepSeq.rnf implementation
deepseq-th library: Template Haskell based deriver for optimised NFData instances
distributed-process library and programs: Cloud Haskell: Erlang-style concurrency in Haskell
distributed-process-azure library and programs: Microsoft Azure backend for Cloud Haskell
distributed-process-simplelocalnet library and program: Simple zero-configuration backend for Cloud Haskell
distributed-static library: Compositional, type-safe, polymorphic static values and closures
edenmodules library: Semi-explicit parallel programming library
edenskel library: Semi-explicit parallel programming skeleton library
effects library: Computational Effects
either library: An either monad transformer
errors library: Simplified error-handling
Etage library: A general data-flow framework
event-driven library: library for event driven programming
event-handlers library: Event handlers
event-monad library: Event-graph simulation monad transformer
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl2 classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
exceptions library: Extensible optionally-pure exceptions
explicit-exception library and programs: Exceptions which are explicit in the type signature.
explicit-sharing library: Explicit Sharing of Monadic Effects
extensible-exceptions library: Extensible exceptions
failure library: A simple type class for success/failure computations.
FailureT library: Failure Monad Transformer
for-free library: Functor, Monad, MonadPlus, etc for free
fpipe library: F#-style composition and application
free library: Monads for free
free-operational library: Operational Applicative, Alternative, Monad and MonadPlus, built with free types.
full-sessions library: a monad for protocol-typed network programming
function-combine library: Combining functions
functor-apply library: This package has been subsumed by semigroupoids
functors library: (.:) and friends, syntax for Functor and Applicative.
general-prelude library: Prelude replacement using generalized type classes where possible
generator library: Python-generators notation for creation of monadic lists
generators library: Actually useful monadic random value generators.
generic-deepseq library: Generic deep evaluation of data structures
GotoT-transformers library: A monad and monadic transformer providing "goto" functionality
groupoids library: Haskell 98 Groupoids
hasim library: Process-Based Discrete Event Simulation library
haskell-cnc library and program: Library for parallel programming in the Intel Concurrent Collections paradigm.
hcron library: A simple job scheduler, which just runs some IO action at a given time.
hdph library and programs: Haskell distributed parallel Haskell
hdph-closure library: Explicit closures in Haskell distributed parallel Haskell
hmk library and program: A make alternative based on Plan9's mk.
hpc library: Code Coverage Library for Haskell
IfElse library: Anaphoric and miscellaneous useful control-flow
ImperativeHaskell library: A library for writing Imperative style haskell.
index-core library: Indexed Types
indexed library: Haskell98 indexed functors, monads, comonads
indexed-extras library: Indexed functors, monads and comonads that require extensions to Haskell98
indexed-free library: indexed monads for free
InfixApplicative library: liftA2 for infix operators.
interleave library: Combinators for supporting interleaving of different behaviours
invariant library: Haskell 98 invariant functors
io-choice library: Choice for IO and lifted IO
io-reactive library and program: An API for generating TIMBER style reactive objects.
iotransaction library: Supports the automatic undoing of IO operations when an exception is thrown.
Kleislify library: Variants of Control.Arrow functions, specialised to kleislis.
lax library: Lax arrows
layers library: Modular type class machinery for monad transformer stacks.
lazyio library and program: Run IO actions lazily while respecting their order
level-monad library: Non-Determinism Monad for Level-Wise Search
lifted-base library: lifted IO operations from the base library
List library: List monad transformer and class
local-search library: Generalised local search within Haskell, for applications in combinatorial optimisation.
logicst library: Backtracking mutable references in the ST and IO monads
logict library: A backtracking logic-programming monad.
loop-while library: A monad transformer supporting various styles of while loop
machines library: Networked stream transducers
MaybeT library: MaybeT monad transformer
MaybeT-transformers library: MaybeT monad transformer using transformers instead of mtl.
meta-par library: Provides the monad-par interface, but based on modular scheduler "mix-ins".
minioperational library: fast and simple operational monad
MissingM library: findM and other missing 'M's
mix-arrows library: Mixing effects of one arrow into another one
mmorph library: Monad morphisms
mmtl library: Modular Monad transformer library
mmtl-base library: MonadBase type-class for mmtl
modular-prelude library: A new Prelude featuring first class modules
modular-prelude-classy library: Reifying ClassyPrelude a la ModularPrelude
monad-abort-fd library: A better error monad transformer
monad-atom library: Monadically convert object to unique integers and back.
monad-atom-simple library: Monadically map objects to unique ints.
monad-codec library: Monadic conversion between complex data structures and unique integers
monad-control library: Lift control operations, like exception catching, through monad transformers
monad-coroutine library: Coroutine monad transformer for suspending and resuming monadic computations
monad-exception library: Exstensible monadic exceptions
monad-fork library: Type class for monads which support a fork operation.
monad-loops library: Monadic loops
monad-loops-stm library: Monadic loops for STM
monad-memo library: Memoization monad transformer
monad-mersenne-random library: An efficient random generator monad, based on the Mersenne Twister
monad-ox library: Monad for observation extraction
monad-par library: A library for parallel programming based on a monad
monad-par-extras library: Combinators and extra features for Par monads
monad-parallel library: Parallel execution of monadic computations
monad-param library: Parameterized monads
monad-peel library: Lift control operations like exception catching through monad transformers
monad-products library: Haskell 98 monad products
monad-ran library: Fast monads and monad transformers
monad-st library: Provides a MonadST class
monad-state library: Utility library for monads, particularly those involving state
monad-stm library: MonadSTM class analogous to MonadIO
monad-supply library: Stateful supply monad.
monad-task library: A monad transformer that turns event processing into co-routine programming.
monad-tx library: A transactional state monad.
monad-wrap library: Wrap functions such as catch around different monads
monadbi library: Extract underlying monads from monad transformers
MonadCatchIO-mtl library: Monad-transformer version of the Control.Exception module
MonadCatchIO-mtl-foreign library: Polymorphic combinators for working with foreign functions
MonadCatchIO-transformers library: Monad-transformer compatible version of the Control.Exception module
MonadCatchIO-transformers-foreign library: Polymorphic combinators for working with foreign functions
monadcryptorandom library: A monad for using CryptoRandomGen
monadfibre library: Monadic functions which provide Choice and Parallelism.
monadiccp library: Constraint Programming
monadio-unwrappable library: Reversibly allow monad transformer stacks to run in IO
monadLib-compose library: Arrow-like monad composition for monadLib.
monadlist library: Monadic versions of list functions
monadloc library: A class for monads which can keep a monadic call trace
monadloc-pp program: A preprocessor for generating monadic call traces
monadplus library: Haskell98 partial maps and filters over MonadPlus.
MonadPrompt library: MonadPrompt, implementation & examples
MonadRandom library: Random-number generation monad.
MonadRandomLazy library: Lazy monad for psuedo random-number generation.
monads-tf library: Monad classes, using type families
Monatron library: Monad transformer library with uniform liftings
Monatron-IO library: MonadIO instances for the Monatron transformers.
mtl library: Monad classes, using functional dependencies
mtl-evil-instances library: Instances for the mtl classes for all monad transformers.
mtl-tf library: Monad transformer library using type families
mtlx library: Monad transformer library with type indexes, providing 'free' copies.
multipass library: Folding data with multiple named passes
netwire library: Flexible wire arrows for FRP
newtype library: A typeclass and set of functions for working with newtypes.
newtype-th library: A template haskell deriver to create Control.Newtype instances.
newtyper library: Extra functions for the Control.Newtype typeclass
operational library and program: Implementation of difficult monads made easy with operational semantics.
parallel library: Parallel programming library
parallel-tree-search library: Parallel Tree Search
partial-isomorphisms library: Partial isomorphisms.
perm library: permutation Applicative and Monad with many mtl instances
PermuteEffects library: Permutations of effectful computations
pipes library: Compositional pipelines
pipes-attoparsec-streaming library and program: Streaming parsing in the pipes-core framework with Attoparsec.
pipes-concurrency library: Concurrency for the pipes ecosystem
pipes-conduit library: Conduit adapters
pipes-core library: Compositional pipelines
pipes-extra library and programs: Various basic utilities for Pipes.
pipes-parse library: Parsing infrastructure for the pipes ecosystem
pipes-safe library: Safety for the pipes ecosystem
pipes-vector library: Various proxies for streaming data into and out of vectors
ports library: The Haskell Ports Library
prelude-plus program: Prelude for rest of us
ProbabilityMonads library: Probability distribution monads.
profunctor-extras library: Profunctor extras
profunctors library: Haskell 98 Profunctors
quantum-arrow library: An embedding of quantum computation as a Haskell arrow
rate-limit library: A basic library for rate-limiting IO actions.
recursion-schemes library: Generalized bananas, lenses and barbed wire
ref-fd library: A type class for monads with references using functional dependencies.
ref-mtl library: A type class for monads with references compatible with the mtl2 library.
ref-tf library: A type class for monads with references using type families.
reference library: A class for references in Haskell
regions library: Provides the region monad for safely opening and working with scarce resources.
regions-monadstf library: Monads-tf instances for the RegionT monad transformer
regions-mtl library: mtl instances for the RegionT monad transformer
rematch library: A simple api for matchers
rematch-text library: `rematch` matchers for Data.Text
ReplicateEffects library: Composable replication schemes of applicative functors
resource-simple library: Allocate resources which are guaranteed to be released.
resumable-exceptions library: A monad transformer for resumable exceptions
retry library: Retry combinators for monadic actions that may fail
rev-state library: Reverse State monad transformer
rex library: A quasi-quoter for typeful results of regex captures.
rmonad library: Restricted monad library
scc library and program: Streaming component combinators
schonfinkeling library: Transformation of n-ary functions to unary functions
semigroupoid-extras library: Semigroupoids requiring Haskell extensions
semigroupoids library: Haskell 98 semigroupoids: Category sans id
sessions library: Session Types for Haskell
shortcircuit library: Short-circuit values and expressions.
simple-observer library: The Observer pattern
simple-sessions library: A simple implementation of session types
sink library: An alternative to lazy I/O that doesn't conflate execution with evaluation
sousit library: Source/Sink/Transform: An alternative to lazy IO and iteratees.
spawn library: Tiny library for concurrent computations
speculation-transformers library: Merged into 'speculation'. Use that instead.
state-plus library: MonadPlus for StateT
statestack library: Simple State-like monad transformer with saveable and restorable state
stream-monad library and program: Simple, Fair and Terminating Backtracking Monad
streamproc library: Stream Processer Arrow
streams library: Various Haskell 2010 stream comonads
strict-concurrency library: Strict concurrency abstractions
synchronous-channels library: Synchronous communication channels
tagshare library: TagShare - explicit sharing with tags
tardis library: Bidirectional state monad transformer
these library: An either-or-both data type, with corresponding hybrid error/writer monad transformer.
threads-pool library: A library to operate with pool of haskell's IO threads
timeout-control library: Updatable timeouts as a Monad transformer
transactional-events library: Transactional events, based on Concurrent ML semantics
transformers library: Concrete functor and monad transformers
transformers-abort library: A better error monad transformer
transformers-base library: Lift computations from the bottom of a transformer stack
transformers-compose library: Arrow-like / category-like composition for transformers.
transformers-runnable library: A unified interface for the run operation of monad transformers
tree-monad library: Non-Determinism Monad for Tree Search
TreeT library: Transformer for Data.Tree
tuple-lenses library: Stock FieldN combos and generators
TypeCompose library: Type composition classes & instances
unordered-containers-rematch library: Rematch support for unordered containers
unpack-funcs library: Monad transformers that mirror worker-wrapper transformations.
unsafe library: Unified interface to unsafe functions
uu-interleaved library: ...
vector-strategies library: A parallel evaluation strategy for boxed vectors
views library: Views allow you to run a State monad on part of a state.
weighted-search library: A weighted nondeterministic search monad
wl-pprint-extras library: A free monad based on the Wadler/Leijen pretty printer
wl-pprint-terminfo library: A color pretty printer with terminfo support
Workflow library: Workflow patterns over a monad for thread state logging & recovery
xml-lens library: Lenses, traversals, prisms for xml-conduit
yjtools library: some tools for Monad, List, Tuple and so on.

CouchDB

ez-couch library: A high level static library for working with CouchDB

Crosswords

hpuz library: Haskell bindings for libpuz

Crypto

openssl-createkey library: Create OpenSSL keypairs.

Cryptography

AES library: Fast AES encryption/decryption for bytestrings
bcrypt library: Haskell bindings to the bcrypt password hash
blakesum library: The BLAKE SHA-3 candidate hashes, in Haskell
blakesum-demo program: The BLAKE SHA-3 candidate hashes, in Haskell
cipher-aes library: Fast AES cipher implementation with advanced mode of operations
cipher-aes128 library: AES128 using AES-NI when available.
cipher-rc4 library: Fast RC4 cipher implementation
commsec library: Provide communications security using symmetric ephemeral keys
cprng-aes library: Crypto Pseudo Random Number Generator using AES in counter mode.
cpsa programs: Symbolic cryptographic protocol analyzer
crc16 library: Calculate the crc16-ccitt.
Crypto library and programs: Collects together existing Haskell cryptographic functions into a package
crypto-api library: A generic interface for cryptographic operations
crypto-api-tests library: A test framework and KATs for cryptographic operations.
crypto-conduit library: Conduit interface for cryptographic operations (from crypto-api).
crypto-numbers library: Cryptographic numbers: functions and algorithms
crypto-pubkey library: Public Key cryptography
crypto-pubkey-openssh library: OpenSSH keys decoder/encoder
crypto-pubkey-types library: Generic cryptography Public keys algorithm types
crypto-random-api library: Simple random generators API for cryptography related code
cryptocipher library and program: Symmetrical block and stream ciphers.
cryptohash library: collection of crypto hashes, fast, pure and practical
cryptohash-cryptoapi library: Crypto-api interfaces for cryptohash
digest library: Various cryptographic hashes for bytestrings; CRC32 and Adler32 for now.
digest-pure library: Pure hash functions for bytestrings
DRBG library and program: Deterministic random bit generator (aka RNG, PRNG) based HMACs, Hashes, and Ciphers.
entropy library: A platform independent entropy source
haskdeep program: Computes and audits file hashes.
hecc library: Elliptic Curve Cryptography for Haskell
hF2 library: F(2^e) math for cryptography
hopenssl library: FFI bindings to OpenSSL's EVP digest interface
HsOpenSSL library: (Incomplete) OpenSSL binding for Haskell
intel-aes library: Hardware accelerated AES encryption and Random Number Generation.
monadcryptorandom library: A monad for using CryptoRandomGen
openpgp-Crypto library: Implementation of cryptography for use with OpenPGP using the Crypto library
openpgp-crypto-api library: Implement cryptography for OpenPGP using crypto-api compatible libraries
OTP library: HMAC-Based and Time-Based One-Time Passwords
PBKDF2 library: Make password-based security schemes more secure.
pkcs1 library: RSA encryption with PKCS1 padding
pureMD5 library: A Haskell-only implementation of the MD5 digest (hash) algorithm.
pwstore-cli program: Command line interface for the pwstore library
pwstore-fast library: Secure password storage.
pwstore-purehaskell library: Secure password storage, in pure Haskell.
RSA library and program: Implementation of RSA, using the padding schemes of PKCS#1 v2.1.
saltine library: Cryptography that's easy to digest (NaCl/libsodium bindings).
scrypt library: Stronger password hashing via sequential memory-hard functions.
SHA library and programs: Implementations of the SHA suite of message digest functions
SHA2 library: Fast, incremental SHA hashing for bytestrings
SimpleAES library: Fast AES encryption/decryption for bytestrings
siphash library: siphash: a fast short input PRF
skein library: Skein, a family of cryptographic hash functions. Includes Skein-MAC as well.
TigerHash library: TigerHash with C implementation
Twofish library: An implementation of the Twofish Symmetric-key cipher.
xsha1 library: cryptanalysis of Blizzard's broken SHA-1 implementation.

CSV

cassava library: A CSV parsing and encoding library
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.

Data

abstract-deque library: Abstract, parameterized interface to mutable Deques.
AC-Angle library: Angles in degrees and radians.
AC-Boolean library: Handle Boolean values generatically.
AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Terminal library: Trivial wrapper over ansi-terminal.
AC-VanillaArray library: Immutable arrays with plain integer indicies.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
active library: Abstractions for animation
adaptive-containers library: Self optimizing container types
adaptive-tuple library: Self-optimizing tuple types
AERN-Basics library and program: foundational type classes for approximating exact real numbers
AERN-Real library: arbitrary precision real interval arithmetic
AERN-Real-Double library and programs: arbitrary precision real interval arithmetic
AERN-Real-Interval library: arbitrary precision real interval arithmetic
AERN-RnToRm library: polynomial function enclosures (PFEs) approximating exact real functions
AERN-RnToRm-Plot library: GL plotting of polynomial function enclosures (PFEs)
aeson-bson library: Mapping between Aeson's JSON and Bson objects.
aeson-lens library: Lens of Aeson
aeson-schema library: Haskell JSON schema validator and parser generator
AesonBson library: Mapping between Aeson's JSON and Bson objects.
algebraic-classes library: Conversions between algebraic classes and F-algebras.
alpino-tools library and programs: Alpino data manipulation tools
applicative-numbers library: Applicative-based numeric instances
approximate-equality library: Newtype wrappers for approximate equality
arff library: Generate Attribute-Relation File Format (ARFF) files
array-utils library: Primitive functions for updating many elements in mutable arrays at once
ArrayRef library: Unboxed references, dynamic arrays and more
asn1-data library and program: ASN1 data reader and writer in RAW, BER and DER forms
asn1-encoding library and program: ASN1 data reader and writer in RAW, BER and DER forms
asn1-parse library: Simple monadic parser for ASN1 stream types.
asn1-types library: ASN.1 types
astar library: General A* search algorithm.
aterm library: serialisation for Haskell values with sharing support
atomic-primops library: A safe approach to CAS and other atomic ops in Haskell.
attempt library: Concrete data type for handling extensible exceptions as failures.
atto-lisp library: Efficient parsing and serialisation of S-Expressions.
AttoBencode library: Fast Bencode encoding and parsing library
attoparsec-arff library: An ARFF file parser using Attoparsec
attoparsec-binary library: Binary processing extensions to Attoparsec.
attoparsec-conduit library: Consume attoparsec parsers via conduit.
attoparsec-iteratee library: An adapter to convert attoparsec Parsers into blazing-fast Iteratees
attosplit library: Split a lazy bytestring at boundaries defined by an attoparsec parser
base16-bytestring library: Fast base16 (hex) encoding and decoding for ByteStrings
base64-bytestring library: Fast base64 encoding and decoding for ByteStrings
base64-conduit library: Base64-encode and decode streams of bytes.
bcrypt library: Haskell bindings to the bcrypt password hash
bdelta library: Simple, fast binary diff/patch
beamable library: Generic serializer/deserializer with compact representation
bencoding library and program: A library for encoding and decoding of BEncode data.
bert library and program: BERT implementation
bff library and programs: Bidirectionalization for Free! (POPL'09)
bidispec library: Specification of generators and parsers
bidispec-extras library: Extra helper functions for bidirectional specifications
bifunctors library: Haskell 98 bifunctors
bimap library: Bidirectional mapping between two key types
binary library: Binary serialisation for Haskell values using lazy ByteStrings
binary-bits library: Bit parsing/writing on top of binary.
binary-communicator library: Flexible way to ease transmission of binary data.
binary-derive library: Automatic deriving of Binary using GHC.Generics
binary-generic library: Generic binary serialisation using binary and syb.
binary-indexed-tree library: Binary Indexed Trees (a.k.a. Fenwick Trees).
binary-protocol library: Monad to ease implementing a binary network protocol.
binary-protocol-zmq library and program: Monad to ease implementing a binary network protocol over ZeroMQ
binary-shared library: Sharing for the binary package
binary-state library: Simple wrapper around Data.Binary, which adds StateT to Get/Put monads.
binary-strict library: Binary deserialisation using strict ByteStrings
binarydefer library: Binary serialization with deferred loading
bind-marshal library: Data marshaling library that uses type level equations to optimize buffering.
bit-vector library: Simple bit vectors for Haskell
bitarray library: Mutable and immutable bit arrays
bitmap library: A library for handling and manipulating bitmaps (rectangular pixel arrays).
bitmap-opengl library: OpenGL support for Data.Bitmap.
bitmaps library: Bitmap library
bits library: Various bit twiddling and bitwise serialization primitives
bits-atomic library and program: Atomic bit operations on memory locations for low-level synchronization
bits-conduit library: Bitstream support for Conduit
bits-extras library and program: Efficient high-level bit operations not found in Data.Bits
bitstream library: Fast, packed, strict and lazy bit streams with stream fusion
bitstring library: Lazy bit strings
BitSyntax library: A module to aid in the (de)serialisation of binary data
bitvec library: Unboxed vectors of bits / dense IntSets
bitwise library: fast multi-dimensional unboxed bit packed Bool arrays
blaze-builder library: Efficient buffered output.
blaze-builder-conduit library: Convert streams of builders to streams of bytestrings.
blaze-builder-enumerator library: Enumeratees for the incremental conversion of builders to bytestrings.
bloomfilter library: Pure and impure Bloom Filter implementations.
bool-extras library: A fold function for Bool
Boolean library: Generalized booleans and numbers
bson library: BSON documents are JSON-like objects with a standard binary encoding.
bson-generic library: Generic functionality for BSON
bson-mapping library: Mapping between BSON and algebraic data types.
bv library and program: Bit-vector arithmetic library
byteable library: Type class for sequence of bytes
bytes library: Sharing code for serialization between binary and cereal
bytestring library: Fast, compact, strict and lazy byte strings with a list interface
bytestring-class library: Classes for automatic conversion to and from strict and lazy bytestrings.
bytestring-csv library: Parse CSV formatted data efficiently
bytestring-delta library: Simple, fast binary diff/patch
bytestring-lexing library: Parse and produce literals efficiently from strict or lazy bytestrings.
bytestring-trie library: An efficient finite map from (byte)strings to values.
Cardinality library: Measure container capacity. Use it to safely change container.
carray library: A C-compatible array library.
case-insensitive library: Case insensitive string comparison
categorical-algebra library: Categorical Monoids and Semirings
cereal library: A binary serialization library
cereal-derive library: Automatic deriving of Serialize using GHC.Generics
cereal-ieee754 library: Floating point support for the 'cereal' serialization library
cereal-vector library: Serialize instances for Data.Vector types.
certificate library and programs: Certificates and Key Reader/Writer
charset library: Fast unicode character sets based on complemented PATRICIA tries
Checked library: Inbuilt checking for ultra reliable computing
checked library: Bounds-checking integer types.
CLASE library: Cursor Library for A Structured Editor
classify library: Library for classification of media files.
ClassyPrelude library: Prelude replacement using classes instead of concrete types where reasonable
colors library: A type for colors
colour library: A model for human colour/color perception
combobuffer library: Various buffer implementations
compact-map library: Compact Data.Map implementation using Data.Binary
compact-string-fix library: Same as compact-string except with a small fix so it builds on ghc-6.12
composition library: Combinators for unorthodox function composition
compressed library: Compressed containers and reducers
concrete-typerep library: Binary and Hashable instances for TypeRep
condorcet library: Library for Condorcet voting
conduit library: Streaming data processing library.
conduit-resumablesink library: Allows conduit to resume sinks to feed multiple sources into it.
configuration library: Simple data type for application configuration.
configurator library: Configuration management
ConsStream library: Trivial re-export of Wouter Swierstra's Stream package, avoiding module name clash.
containers-unicode-symbols library: Unicode alternatives for common functions and operators
contravariant library: Contravariant functors
convertible library and program: Typeclasses and instances for converting between types
convertible-ascii library: convertible instances for ascii
COrdering library: An algebraic data type similar to Prelude Ordering.
coroutine-iteratee library: Bridge between the monad-coroutine and iteratee packages.
countable library: Countable, Searchable, Finite, Empty classes
cpu library and program: Cpu information and properties helpers.
cqrs library: Command-Query Responsibility Segregation
cqrs-postgresql library: PostgreSQL backend for the cqrs package.
cqrs-sqlite3 library: SQLite3 backend for the cqrs package.
cqrs-test library: Command-Query Responsibility Segregation Test Support
cqrs-types library: Command-Query Responsibility Segregation. Modules for the basic types.
critbit library: Crit-bit maps and sets
crypto-api library: A generic interface for cryptographic operations
crypto-api-tests library: A test framework and KATs for cryptographic operations.
cryptohash library: collection of crypto hashes, fast, pure and practical
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
csv-enumerator library: A flexible, fast, enumerator-based CSV parser library for Haskell.
data-accessor library: Utilities for accessing and manipulating fields of records
data-accessor-monadLib library: Accessor functions for monadLib's monads
data-accessor-monads-fd library: Use Accessor to access state in monads-fd State monad class
data-accessor-monads-tf library: Use Accessor to access state in monads-tf State monad type family
data-accessor-mtl library: Use Accessor to access state in mtl State monad class
data-accessor-template library: Utilities for accessing and manipulating fields of records
data-accessor-transformers library: Use Accessor to access state in transformers State monad
data-binary-ieee754 library: Parser/Serialiser for IEEE-754 floating-point values
data-checked library: Type-indexed runtime-checked properties
data-cycle library: a cyclic doubly linked list
data-default library: A class for types with a default value
data-default-class library: A class for types with a default value
data-default-instances-base library: Default instances for types in base
data-default-instances-containers library: Default instances for types in containers
data-default-instances-dlist library: Default instances for types in dlist
data-default-instances-old-locale library: Default instances for types in old-locale
data-dword library: Stick two binary words together to get a bigger one
data-endian library: Endian-sensitive data
data-fix library: Fixpoint data types
data-fix-cse library: Common subexpression elimination for the fixploint types.
data-flags library: A package for working with bit masks and flags in general.
data-hash library: Combinators for building fast hashing functions.
Data-Hash-Consistent library: Provide a simple consistent hashing mechanism
data-interval library: Interval arithmetic for both open and closed intervals
data-inttrie library: A lazy, infinite trie of integers.
data-ivar library: Write-once variables with concurrency support
data-lens-template library: Utilities for Data.Lens
data-list-sequences library: Utilities for working with sequences within lists.
data-memocombinators library: Combinators for building memo tables.
data-nat library: data Nat = Zero | Succ Nat
data-or library: A data type for non-exclusive disjunction.
data-ordlist library: Set and bag operations on ordered lists
data-partition library: A pure disjoint set (union find) data structure
data-quotientref library: Reference cells that need two independent indices to be accessed.
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-reify-cse library: Common Sub-Expression Elimination for graphs generated by Data.Reify.
data-rope library: Ropes, an alternative to (Byte)Strings.
data-store library: Type safe, in-memory dictionary with multidimensional keys.
data-textual library: Human-friendly textual representations.
data-timeout library: 64-bit timeouts of nanosecond precision
data-treify library: Reify a recursive data structure into an explicit graph.
data-type library: Basic type wrangling types and classes
data-util library: utilities for handle data
dates library: Small library for parsing different dates formats.
datetime library: Utilities to make Data.Time.* easier to use.
dawg library: Directed acyclic word graphs
delimited-text library: Parse character delimited textual data
dependent-map library: Dependent finite maps (partial dependent products)
dependent-sum library: Dependent sum type
dependent-sum-template library: Template Haskell code to generate instances of classes in dependent-sum package
derangement library: Find derangements of lists
derive-IG library: Macro to derive instances for Instant-Generics using Template Haskell
derive-trie library: Automatic derivation of Trie implementations.
diff3 library: Perform a 3-way difference of documents
Digit library: A data-type representing digits 0-9
digits library: Converts integers to lists of digits and back.
DimensionalHash library: An n-dimensional hash using Morton numbers.
direct-binary-files library: Serialization and deserialization monads for streams and ByteStrings.
direct-murmur-hash library: An implementation of the MurmurHash3 algorithm
directory-tree library: A simple directory-like tree datatype, with useful IO functions
discrete-space-map library: A discrete space map.
disjoint-set library: Persistent disjoint-sets, a.k.a union-find.
dlist library: Differences lists
dstring library: Difference strings
dtd-text library: Parse and render XML DTDs
dual-tree library: Rose trees with cached and accumulating monoidal annotations
dwarf library: Parser for DWARF debug format.
dwarf-el library: Parser for DWARF debug format.
dynamic-object library: Object-oriented programming with duck typing and singleton classes.
edit-lenses library: Symmetric, stateful edit lenses
edit-lenses-demo program: Programs demoing the use of symmetric, stateful edit lenses
eigen library: Haskel binding for Eigen library
either-unwrap library: Functions for probing and unwrapping values inside of Either.
elerea-sdl library: Elerea FRP wrapper for SDL
elf library: Parser for ELF object format.
entropy library: A platform independent entropy source
EnumContainers library: Simple Enum-class-based int containers
enumerable library: A typeclass for enumerating all values a type
enumerator library: Reliable, high-performance processing with left-fold enumerators
enumfun library: Finitely represented /total/ EnumMaps
enummapmap library: Map of maps using Enum types as keys
enummapset library: IntMap and IntSet with Enum keys/elements.
enummapset-th library: TH-generated EnumSet/EnumMap wrappers around IntSet/IntMap.
enumset library: Sets of enumeration values represented by machine words
equivalence library: Maintaining an equivalence relation implemented as union-find using STT.
EuroIT library: Library for using euro currency, italian language
event-handlers library: Event handlers
event-list library and program: Event lists with relative or absolute time stamps
every-bit-counts library: A functional pearl on encoding and decoding using question-and-answer strategies
extensible-data library: Sums/products/lists/trees which can be extended in other modules
fair-predicates library: Fair Predicates
family-tree library: A family tree library for the Haskell programming language.
fclabels library: First class accessor labels.
fclabels-monadlib library: MonadLib monadic interface for the "fclabels" package.
fgl-extras-decompositions library: Graph decomposition algorithms
fields library: First-class record field combinators with infix record field syntax.
file-embed library: Use Template Haskell to embed file contents directly.
filestore library: Interface for versioning file stores.
filesystem-conduit library: Use system-filepath data types with conduits.
filesystem-trees library: Recursively manipulate and traverse filesystems as lazy rose trees.
finite-field library: Finite Fields
first-class-patterns library: First class patterns and pattern matching, using type families
fitsio library: A library for reading and writing data files in the FITS data format.
fixed-list library: A fixed length list type
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
fixed-vector library: Generic vectors with statically known size.
FixedPoint-simple library: Fixed point, large word, ...
fixedprec library: A fixed-precision real number type
fixpoint library: Data types as fixpoints
flexiwrap library: Flexible wrappers
flexiwrap-smallcheck library: SmallCheck (Serial) instances for flexiwrap
fmlist library: FoldMap lists
Focus library: Tools for focusing in on locations within numbers
fraction library: Fractions
free-functors library: Provides free functors that are adjoint to functors that forget class constraints.
fsmActions library: Finite state machines and FSM actions
functor-combo library: Functor combinators with tries & zippers
game-tree library: Searching game trees with alpha-beta pruning
gdiff library: Generic diff and patch
general-prelude library: Prelude replacement using generalized type classes where possible
generic-binary library: Generic Data.Binary derivation using GHC generics.
generic-storable library: Generic implementation of Storable
genericserialize library: Serialization library using Data.Generics
geohash library: Geohash latitudes and longitudes.
git-date library: Bindings to the date parsing from Git.
global-variables library: Namespaced, global, and top-level mutable variables without unsafePerformIO.
gofer-prelude library: The Gofer 2.30 standard prelude
gpcsets library: Generalized Pitch Class Sets for Haskell.
gps library: For manipulating GPS coordinates and trails.
gps2htmlReport library and program: GPS to HTML Summary Report
gpx-conduit library: Read GPX files using conduits
grapefruit-records library: A record system for Functional Reactive Programming
graph-utils library: A simple wrapper & quasi quoter for fgl.
graphbuilder library: A declarative, monadic graph construction language for small graphs
groups library: Haskell 98 groups
gtfs library: The General Transit Feed Specification format
HaLeX library and program: HaLeX enables modelling, manipulation and animation of regular languages
has library and program: Entity based records
has-th library: Template Haskell function for Has records.
hash library: Hashing tools
hashable library: A class for types that can be converted to a hash value
hashable-extras library: Higher-rank Hashable
hashable-generics library: Automatically generates Hashable instances with GHC.Generics.
hashmap library: Persistent containers Map and Set based on hashing.
hashring library: Efficient consistent hashing.
hashtables library: Mutable hash tables in the ST monad
haskell-qrencode library: Haskell bindings for libqrencode.
Hayoo programs: The Hayoo! search engine for Haskell API search on hackage
hbcd library: Packed binary-coded decimal (BCD) serialization
hBDD library: An abstraction layer for BDD libraries
hBDD-CUDD library: An FFI binding to the CUDD library
hDFA library: A simple library for representing and minimising DFAs.
hebrew-time library and program: Hebrew dates and prayer times.
hedn library: EDN parsing and encoding
here library: Here docs & interpolated strings via quasiquotation
hetero-map library: Pure heterogeneous maps.
hex library: Convert strings into hexadecimal and back.
hexquote library: Hexadecimal ByteString literals, with placeholders that bind variables
HiggsSet library: A multi-index set with advanced query capabilites
hinze-streams library: Streams and Unique Fixed Points
hips program: an IPS patcher
histogram-fill library: Library for histograms creation.
histogram-fill-cereal library: Library for histograms creation.
HList library: Heterogeneous lists
hmatrix-repa library: Adaptors for interoperability between hmatrix and repa
hmemdb library: In-memory relational database
hmpfr library: Haskell binding to the MPFR library
Holumbus-Searchengine library: A search and indexing engine.
hoodle-types library: Data types for programs for hoodle file format
hOpenPGP library: native Haskell implementation of OpenPGP (RFC4880)
hs-excelx library: ...
hs-GeoIP library: Haskell bindings to the MaxMind GeoIPCity database via the C library
HsJudy library: Judy bindings, and some nice APIs
hsndfile library: Haskell bindings for libsndfile
hsndfile-storablevector library: Haskell bindings for libsndfile (Data.StorableVector interface)
hsndfile-vector library: Haskell bindings for libsndfile (Data.Vector interface)
httpspec library: Specification of HTTP request/response generators and parsers
huffman library: Pure Haskell implementation of the Huffman encoding algorithm
idna library: Implements IDNA (RFC 3490).
IDynamic library: Indexable, serializable form of Data.Dynamic
implicit-params library: Named and unnamed implicit parameters with defaults.
infinite-search library: Exhaustively searchable infinite sets.
inflist library: An infinite list type and operations thereon.
intern library: Efficient hash-consing for arbitrary data types
interpolatedstring-perl6 library: QuasiQuoter for Perl6-style multi-line interpolated strings
interpolatedstring-qq library: QuasiQuoter for Ruby-style multi-line interpolated strings.
Interpolation library: Multiline strings, interpolation and templating.
IntervalMap library: Maps from Intervals to values, with efficient search.
intset library: Pure, fast and memory efficient integer sets.
invariant library: Haskell 98 invariant functors
io-storage library: A key-value store in the IO monad.
io-streams library: Simple, composable, and easy-to-use stream I/O
ioctl library: Type-safe I/O control package
IORefCAS library: Atomic compare and swap for IORefs and STRefs.
ipopt-hs library and programs: haskell binding to ipopt including automatic differentiation
irc library: A small library for parsing IRC messages.
isevaluated library: Check whether a value has been evaluated
iso3166-country-codes library: A datatype for ISO 3166 country codes
iteratee library: Iteratee-based I/O
iteratee-compress library: Enumeratees for compressing and decompressing streams
iteratee-mtl library and program: Iteratee-based I/O
iteratee-parsec library: Package allowing parsec parser initeratee
iteratee-stm library: Concurrent iteratees using STM
iterIO library: Iteratee-based IO with pipe operators
ix-shapable library: Reshape multi-dimensional arrays.
joinlist library: Join list - symmetric list type
json2 library: Library provides support for JSON.
json2-types library: Defined JSON data types and function for renders JSON to string.
judy library: Fast, scalable, mutable dynamic arrays, maps and hashes
largeword library: Provides Word128, ...
lazyarray library: Efficient implementation of lazy monolithic arrays (lazy in indexes).
lens library: Lenses, Folds and Traversals
lens-family library: Lens Families
lens-family-core library: Haskell 98 Lens Families
lens-family-th library: Generate lens-family style lenses
lenses library: Simple Functional Lenses
lhae program: Simple spreadsheet program
lhe library: Parser and writer for Les-Houches event files
Limit library: Wrapper for data that can be unbounded
linear-maps library and programs: Finite maps for linear use
list-grouping library: Functions for grouping a list into sublists
list-tries library and program: Tries and Patricia tries: finite sets and maps for list keys
ListZipper library: Simple zipper for lists
literals library: Non-overloaded functions for concrete literals.
llrbtree library: Purely functional sets and heaps
lockfree-queue library: Michael and Scott lock-free queues.
logfloat library: Log-domain floating point numbers
lrucache library: a simple, pure LRU cache
LTree library: Tree with only leaves carrying the data.
lub library: information operators: least upper bound (lub) and greatest lower bound (glb)
luhn library: An implementation of Luhn's check digit algorithm.
macho library: Parser for Mach-O object format.
magma library: magma is an algebraic structure consisting a set together with an binary operation.
markov library: Simple interpreter for Markov's normal algorithms
mbox library: Read and write standard mailbox files.
Measure library: A library for units of measurement
memoize library: A memoization library
MemoTrie library: Trie-based memo functions
metadata library: metadata library for semantic web
mlist library: Monadic List alternative to lazy I/O
monad-primitive library: Type class for monad transformers stack with pirimitive base monad.
monad-state library: Utility library for monads, particularly those involving state
monad-statevar library: Concise, overloaded accessors for IORef, STRef, TVar
monad-supply library: Stateful supply monad.
monoid-extras library: Various extra monoid-related definitions and utilities
monoid-record library: Support for modifying record fields of monoidal type
monoid-subclasses library: Subclasses of Monoid
monoid-transformer library: Monoid counterparts to some ubiquitous monad transformers
monoidplus library: Extra classes/functions about monoids
monomorphic library: Library to convert polymorphic datatypes to/from its monomorphic represetation
msgpack library: A Haskell implementation of MessagePack
mtree library: Tree with Meta and Content parameters
multirec-binary library: Generic Data.Binary instances using MultiRec.
murmur-hash library: MurmurHash2 implementation for Haskell.
murmurhash3 library: 32-bit non-cryptographic hashing
mutable-iter library: iteratees based upon mutable buffers
named-records library: Flexible records with named fields.
names library: Type level names.
nat library: Lazy binary natural numbers
natural-number library: Natural numbers tagged with a type-level representation of the number.
natural-numbers library: Natural numbers
naturals library: Constructors and related functions for natural numbers
nbt library: A parser/serializer for Minecraft's Named Binary Tag (NBT) data format.
neither library: Provide versions of Either with good monad and applicative instances. (deprecated)
network-address library and program: IP data structures and textual representation
network-conduit library: Stream socket data using conduits.
network-data library: Library for network data structures and their serialization.
network-enumerator library: Enumerators for network sockets
network-stream library: ByteString and Text streams for networking
NewBinary library: A binary I/O library
nextstep-plist library: NextStep style plist parser and printer
NineP library: 9P2000 in pure Haskell
non-empty library: List-like structures with static restrictions on the number of elements
NonEmpty library: Library providing a non-empty list datatype, and total functions operating on it
NonEmptyList library: A list with a length of at least one.
numbering library: Combinators for creating bijections from some type to the natural numbers.
numbers library: Various number types
NumInstances library: Instances of numeric classes for functions and tuples
ObjectName library: Explicitly handled object names
Octree library: Simple unbalanced Octree for storing data about 3D points
OddWord library: Provides a wrapper for deriving word types with fewer bits.
oi library: Library for purely functional lazy interactions with the outer world.
Omega library: Operations on Presburger arithmetic formulae
oneOfN library: Anonymous coproduct type
OneTuple library: Singleton Tuple
open-witness library: open witnesses
OpenAFP library: IBM AFP document format parser and generator
OpenAFP-Utils programs: Assorted utilities to work with AFP data streams
openpgp library: Implementation of the OpenPGP message format
openpgp-asciiarmor library: OpenPGP (RFC4880) ASCII Armor codec
OptDir library: The OptDir type for representing optimization directions.
ord-adhoc library: Creating Ord instances instantly
osx-ar library: Parser for OS X static archive format.
packed-dawg library: Generation and traversal of highly compressed directed acyclic word graphs.
packer library: Fast byte serializer and unserializer
parameterized-data library: Parameterized data library implementing lightweight dependent types
parsergen library: TH parser generator for splitting bytestring into fixed-width fields
patch-combinators library: A library for patching functions and data structures
Peano library: simple Peano numbers
peano-inf library: Lazy Peano numbers including observable infinity value.
pecoff library: Parser for PE/COFF format.
pem library: Privacy Enhanced Mail (PEM) format reader and writer.
peparser library: A parser for PE object files.
PerfectHash library: A perfect hashing library for mapping bytestrings to values.
persistent-equivalence library: Persistent equivalence relations (aka union-find)
persistent-refs library: Haskell references backed by an IntMap for persistence and reversibility.
persistent-vector library: A persistent sequence based on array mapped tries
pez library: A Pretty Extraordinary Zipper library
phasechange library: Freezing, thawing, and copy elision
pktree library: Implementation of the PKTree spatial index data structure
planar-graph library: A representation of planar graphs
pointed library: Haskell 98 pointed and copointed data
pointedlist library: A zipper-like comonad which works as a list, tracking a position.
polyToMonoid library: Polyvariadic functions mapping to a given monoid
polytypeable library: Typeable for polymorphic types.
polytypeable-utils library: Utilities for polytypeable.
postgresql-copy-escape library: Format data to feed to a PostgreSQL COPY FROM statement
prednote library: Build and evaluate trees of predicates
prefix-units library: A basic library for SI/binary prefix units
prelude-plus program: Prelude for rest of us
pretty-hex library: A library for hex dumps of ByteStrings
pretty-tree library: Pretty-print trees
prim-uniq library: Opaque unique identifiers in primitive state monads
primitive library: Primitive memory-related operations
PrimitiveArray library: Efficient multidimensional arrays
priority-queue library: Simple implementation of a priority queue.
procrastinating-structure library: Pure structures that can be incrementally created in impure code
procrastinating-variable library: Haskell values that cannot be evaluated immediately.
property-list library: Apple property list parser
protobuf library and program: Google Protocol Buffers via GHC.Generics
pure-priority-queue library: A pure priority queue.
pure-priority-queue-tests program: Tests for the pure-priority-queue package
pureMD5 library: A Haskell-only implementation of the MD5 digest (hash) algorithm.
QuadEdge library: QuadEdge structure for representing triangulations
queue library: Abstraction typeclasses for queue-like things.
quickset library: Very fast and memory-compact query-only set and map structures
random-extras library: Additional functions for random values.
Range library: Data structure for managing ranges
Ranged-sets library: Ranged sets for Haskell
rank1dynamic library: Like Data.Dynamic/Data.Typeable but with support for rank-1 polymorphic types
records library: A flexible record system
records-th library: Template Haskell declarations for the records package
reducers library: Semigroups, specialized containers and a general map/reduce framework
ref library: Generic Mutable Ref Abstraction Layer
Ref library: Generic Mutable Ref Abstraction Layer
reference library: A class for references in Haskell
reflection library: Reifies arbitrary terms into types that can be reflected back into terms
RefSerialize library: Write to and read from ByteStrings maintaining internal memory references
regexp-tries library: Regular Expressions on Tries.
regular-xmlpickler library: Generic generation of HXT XmlPickler instances using Regular.
reify library and program: Serialize data
relative-date library: Durations and generalized time parsing
reord library: Ad-hoc Ord instances
resource-pool library: A high-performance striped resource pooling implementation
resource-pool-catchio library: Fork of resource-pool, with a MonadCatchIO constraint
resourcet library: Deterministic allocation and freeing of scarce resources.
rivers library: Rivers are like Streams, but different.
rolling-queue library: Bounded channel for STM that discards old entries when full
rowrecord library: Build records from lists of strings, as from CSV files.
runmemo library: A simple memoization helper library
safe-freeze library: Support for safely freezing multiple arrays in the ST monad.
safe-globals library: Safe top-level mutable variables which scope like ordinary values
safecopy library: Binary serialization with version control.
safeint library: overflow-checked Int type
sec library: Semantic Editor Combinators.
securemem library: abstraction to an auto scrubbing and const time eq, memory chunk.
SegmentTree library and program: Data structure for querying the set (or count) of intervals covering given point
Semigroup library: A semigroup
semigroups library: Haskell 98 semigroups
semigroups-actions library: Semigroups actions
sequential-index library: Sequential numbers that allow arbitrarily inserting numbers - for containers
set-extra library: Functions that could be added to Data.Set.
set-monad library: Set monad
setops library: Uniform names (and Unicode operators) for set operations on data structures.
setters library: Small (TH) library to declare setters for typical `record' data type fields.
SG library: Small geometry library for dealing with vectors and collision detection
sgf library: SGF (Smart Game Format) parser
shapely-data library: ...
shortcircuit library: Short-circuit values and expressions.
sieve library: Sieve is an implementation of the Sieve abstract data type.
simple-atom library: Atom (or symbol) datatype for fast comparision and sorting.
simple-rope library: Memory-efficient strings with concatenation and splitting.
sink library: An alternative to lazy I/O that doesn't conflate execution with evaluation
siphash library: siphash: a fast short input PRF
SizeCompare library: Fast size comparison for standard containers.
sized-vector library: Size-parameterized vector types and functions.
smallarray library: low-level unboxed arrays, with minimal features.
smallstring library: A Unicode text type, optimized for low memory overhead
spacepart library: Space partition data structures. Currently only a QuadTree.
splaytree library: Provides an annotated splay tree
spreadsheet library and program: Read and write spreadsheets from and to CSV files in a lazy way
srcloc library: Data types for managing source code locations.
srec library: Parsing and processing s-records.
sstable library and programs: SSTables in Haskell
stable-memo library: Memoization based on argument identity
state library: Data.State
state-record library: Better records for State monad states
stateref library: Abstraction for things that work like IORef.
StateVar library: State variables
stdata library: Structure Data Library
stm-linkedlist library: Mutable, doubly linked lists for STM
stm-sbchan library: Bounded channel for STM where item sizes can vary
stm-tlist library: Mutable, singly-linked list in STM
storable library: Storable type class for variable-sized data
storable-complex library: Storable instance for Complex
storable-endian library: Storable instances with endianness
storable-record library and program: Elegant definition of Storable instances for records
storable-tuple library: Storable instance for pairs and triples
storablevector library and programs: Fast, packed, strict storable arrays with a list interface like ByteString
storablevector-carray library: Conversion between storablevector and carray
storablevector-streamfusion library and program: Conversion between storablevector and stream-fusion lists with fusion
Strafunski-ATermLib library: An abstract data type designed for the exchange of tree-like data structures
Stream library: A library for manipulating infinite lists.
stream-fusion library: Faster Haskell lists using stream fusion
strict library: Strict data types and String IO.
strict-base-types library: Strict variants of the types provided in base.
string-class library: String class library
string-combinators library: Polymorphic functions to build and combine stringlike values
string-conversions library: Simplifies dealing with different types for strings
string-qq library: QuasiQuoter for non-interpolated strings, texts and bytestrings.
string-quote library: QuasiQuoter for non-interpolated strings, texts and bytestrings.
stringable library: A Stringable type class, in the spirit of Foldable and Traversable
stringprep library: Implements the "StringPrep" algorithm
stringtable-atom library: Memoize Strings as Atoms for fast comparison and sorting, with maps and sets
strptime library: Efficient parsing of LocalTime using a binding to C's strptime, ...
suffixarray library and programs: n log n implementation of suffix array.
suffixtree library: Efficient, lazy suffix tree implementation
suitable library: Abstract over the constraints on the parameters to type constructors
syb-with-class library: Scrap Your Boilerplate With Class
syb-with-class-instances-text library: Scrap Your Boilerplate With Class Text instance
symbol library: A 'Symbol' type for fast symbol comparison.
tables library: In-memory storage with multiple keys using lenses and traversals
tagged library: Haskell 98 phantom types to avoid unsafely passing dummy arguments
tagged-list library: Lists tagged with a type-level natural number representing their length.
tagged-transformer library: Provides newtype wrappers for phantom types to avoid unsafely passing dummy arguments
tagging library: Library for tagging data
tbox library: Transactional variables and data structures with IO hooks
TCache library: A Transactional cache with user-defined persistence
template-default library: declaring Default instances just got even easier
tensor library: A completely type-safe library for linear algebra
Tensor library: Tensor data types
text library: An efficient packed Unicode text type.
text-binary library: Binary instances for text types
text-icu library: Bindings to the ICU library
these library: An either-or-both data type, with corresponding hybrid error/writer monad transformer.
thyme library: A faster time library
time-lens library: Lens-based interface to Data.Time data structures
time-units library: A basic library for defining units of time as types.
timeparsers library: Attoparsec parsers for various Date/Time formats.
timezone-olson library: A pure Haskell parser and renderer for binary Olson timezone files
timezone-series library: Enhanced timezone handling for Data.Time
tomato-rubato-openal library: Easy to use library for audio programming.
total-map library: Finitely represented /total/ maps
Transhare library: ...
traverse-with-class library: Generic applicative traversals
tskiplist library: A Skip List Implementation in STM
tup-functor library and program: Homogeneous tuples
tuple library: Various functions on tuples
tuple-gen library: Enum instances for tuples where the digits increase with the same speed
tuple-hlist library: Functions to convert between tuples and HLists.
tuple-th library: Generate (non-recursive) utility functions for tuples of statically known size
tupleinstances library: Functor, Applicative and Monad for n-ary tuples.
ty library: Typed type representations and equality proofs
type library: Dynamic casting library with support for arbitrary rank type kinds.
type-equality library: Type equality, coercion/cast and other operations.
type-equality-check library: Type equality check
type-int library: Type Level 2s- and 16s- Complement Integers
type-level library: Type-level programming library
type-level-natural-number library: Simple, Haskell 2010-compatible type level natural numbers
type-level-natural-number-induction library: High-level combinators for performing inductive operations.
type-level-natural-number-operations library: Basic operations on type-level natural numbers.
type-level-tf library: Type-level programming library (type families)
type-unary library: Type-level and typed unary natural numbers, inequality proofs, vectors
typelevel-tensor library: Tensors whose ranks and dimensions type-inferred and type-checked.
typical library: Type level numbers, vectors, list. This lib needs to be extended.
udcode library: Does a set of code words form a uniquely decodable code?
uglymemo library: A simple (but internally ugly) memoization function.
unamb library and program: Unambiguous choice
unamb-custom library: Functional concurrency with unamb using a custom scheduler.
unboxed-containers library: Self-optimizing unboxed sets using view patterns and data families
ungadtagger library: Abstract GADTs from typelevel tags
union-find library: Efficient union and equivalence testing of sets.
union-find-array library: union find data structure
uniqueid library: Splittable Unique Identifier Supply
universal-binary library: Parser for OS X Universal Binary format.
universe library: Classes for types where we know all the values
unix-time library: Unix time parser/formatter and utilities
unordered-containers library: Efficient hashing-based container types
utility-ht library: Various small helper functions for Lists, Maybes, Tuples, Functions
uuid library: For creating, comparing, parsing and printing Universally Unique Identifiers
uuid-quasi library: Supplemental package for 'uuid' allowing quasiquotation.
uvector library: Fast unboxed arrays with a flexible interface
uvector-algorithms library: Efficient algorithms for uvector unboxed arrays
Validation library: A data-type like Either but with an accumulating Applicative
value-supply library: A library for generating values without having to thread state.
var library: Mutable variables and tuples
vault library: a persistent store for values of arbitrary types
vcd library: Reading and writing VCD files.
vcs-revision library: Facilities for accessing the version control revision of the current directory.
Vec library: Fixed-length lists and low-dimensional linear algebra.
Vec-Boolean library: Provides Boolean instances for the Vec package
VecN library: a simple peano-indexed vector type
vector library: Efficient Arrays
vector-algorithms library: Efficient algorithms for vector arrays
vector-binary library: Binary instances for vector types (deprecated)
vector-binary-instances library: Instances of Data.Binary and Data.Serialize for vector
vector-buffer library: A buffer compatible with Data.Vector.*
vector-bytestring library and program: ByteStrings as type synonyms of Storable Vectors of Word8s
vector-clock library: Vector clocks for versioning message flows
vector-conduit library: Conduit utilities for vectors
vector-heterogenous library: A type-safe library for vectors whose elements can be of any type, ...
vector-instances library: Orphan Instances for 'Data.Vector'
vector-instances-collections library: Instances of the Data.Collections classes for Data.Vector.*
vector-mmap library: Memory map immutable and mutable vectors
vector-random library: Generate vectors filled with high quality pseudorandom numbers
vector-static library: Statically checked sizes on Data.Vector
vector-th-unbox library: Deriver for Data.Vector.Unboxed using Template Haskell
WAVE library: WAVE audio file IO library
wavesurfer library: Parse WaveSurfer files
witness library: values that witness types
woffex program: Web Open Font Format (WOFF) unpacker.
word24 library and program: 24-bit word and int types for GHC
word8 library: Word8 library
wraparound library: Convenient handling of points on a seamless 2-dimensional plane
x509 library: X509 reader and writer
x509-store library: X.509 collection accessing and storing methods
x509-system library: Handle per-operating-system X.509 accessors and storage
x509-util program: Utility for X509 certificate and chain
x509-validation library: X.509 Certificate and CRL validation
xcb-types library: Parses XML files used by the XCB project
xournal-types library: Data types for programs for xournal file format
yall library: Lenses with a southern twang
yamemo library: Simple memoisation function
yaml-light library: A light-weight wrapper with utility functions around HsSyck
yjtools library: some tools for Monad, List, Tuple and so on.
zcache library: Zobrist keys for game state tracking
ZipFold library: Zipping folds
zippo library: A simple lens-based, generic, heterogenous, type-checked zipper library
zlib-conduit library: Streaming compression/decompression via conduits.

Data Flow

yarr library: Yet another array library

Data Mining

Emping program: derives heuristic rules from nominal data
hinduce-associations-apriori library: Apriori algorithm for association rule mining
hinduce-classifier library: Interface and utilities for classifiers
hinduce-classifier-decisiontree library: Decision Tree Classifiers for hInduce
hinduce-examples library: Example data for hInduce
hlcm library and programs: Fast algorithm for mining closed frequent itemsets
HLearn-algebra library: Algebraic foundation for homomorphic learning
HLearn-classification library
HLearn-distributions library: Distributions for use with the HLearn library
HMM library: A hidden markov model library
hmm library: A hidden markov model library
hps-kmeans library: A nice implementation of the k-Means algorithm.
hsgsom library: An implementation of the GSOM clustering algorithm.
kmeans library: K-means clustering algorithm

Data Structures

adjunctions library: Adjunctions
adp-multi library and programs: ADP for multiple context-free languages
adp-multi-monadiccp library and program: Subword construction in adp-multi using monadiccp
ADPfusion library and program: Efficient, high-level dynamic programming.
array library: Mutable and immutable arrays
array-utils library: Primitive functions for updating many elements in mutable arrays at once
AvlTree library: Balanced binary trees using the AVL algorithm.
bag library: A simple stable bag.
bitset library: A space-efficient set data structure.
bitwise library: fast multi-dimensional unboxed bit packed Bool arrays
bk-tree library: BK-tree implementation
bktrees library: A set data structure with approximate searching
boolexpr library: Boolean expressions with various representations and search queries.
btree-concurrent library: A backend agnostic, concurrent BTree
bytestring-trie library: An efficient finite map from (byte)strings to values.
collections library: Useful standard collections types and related functions.
collections-api library: API for collection data structures.
collections-base-instances library: Useful standard collections types and related functions.
containers library: Assorted concrete container types
data-clist library: Simple functional ring type.
data-lens-ixset library: A Lens for IxSet
dawg library: Directed acyclic word graphs
dequeue library and program: A typeclass and an implementation for double-ended queues.
diffarray library: DiffArray
disjoint-sets-st library: Imperative ST/IO based disjoint set data structure.
distributive library: Haskell 98 Distributive functors -- Dual to Traversable
dph-base library: Data Parallel Haskell common config and debugging functions.
dph-examples programs: Data Parallel Haskell example programs.
dph-lifted-base library: Data Parallel Haskell common definitions used by other dph-lifted packages.
dph-lifted-copy library: Data Parallel Haskell lifted array combinators. (deprecated version)
dph-lifted-vseg library: Data Parallel Haskell lifted array combinators.
dph-par library: (deprecated)
dph-prim-interface library: Data Parallel Haskell segmented arrays. (abstract interface)
dph-prim-par library: Data Parallel Haskell segmented arrays. (production version)
dph-prim-seq library: Data Parallel Haskell segmented arrays. (sequential implementation)
dph-seq library: (deprecated)
DrIFT-cabalized programs: Program to derive type class instances
EdisonAPI library: A library of efficent, purely-functional data structures (API)
EdisonCore library: A library of efficent, purely-functional data structures (Core Implementations)
EnumMap library: More general IntMap replacement.
enummapmap library: Map of maps using Enum types as keys
Etage-Graph library and program: Data-flow based graph algorithms
FenwickTree library: Data structure for fast query and update of cumulative sums
fgl library: Martin Erwig's Functional Graph Library
fingertree library: Generic finger-tree structure, with example instances
fingertree-psqueue library: Implementation of priority search queues as finger trees.
generic-tree library: Generic Tree data type
gmap library: Composable maps and generic tries.
graph-utils library: A simple wrapper & quasi quoter for fgl.
graph-wrapper library: A wrapper around the standard Data.Graph with a less awkward interface
graphs library: A simple monadic graph library
hamtmap library: A purely functional and persistent hash map
heap library and program: Heaps in Haskell
heaps library: Asymptotically optimal Brodal/Okasaki heaps.
hetero-map library: Pure heterogeneous maps.
hgal library: library for computation automorphism group and canonical labelling of a graph
hobbits library: A library for canonically representing terms with binding
HoleyMonoid library: Monoids with holes.
igraph library: Bindings to the igraph C library.
intern library: Efficient hash-consing for arbitrary data types
ixset library: Efficient relational queries on Haskell sets.
kan-extensions library: Kan extensions, the Yoneda lemma, and (co)density (co)monads
keys library: Keyed functors and containers
labeled-graph library: Labeled graph structure
labeled-tree library: Labeled tree structure
lca library: O(log n) persistent on-line lowest common ancestor calculation without preprocessing
list-tries library and program: Tries and Patricia tries: finite sets and maps for list keys
listlike-instances library: Extra instances of the ListLike class
magma library: magma is an algebraic structure consisting a set together with an binary operation.
meldable-heap library: Asymptotically optimal, Coq-verified meldable heaps, AKA priority queues
monadic-arrays library: Boxed and unboxed arrays for monad transformers
multimap library: A multimap.
multiset library: The Data.MultiSet container type
nthable library
PerfectHash library: A perfect hashing library for mapping bytestrings to values.
permutation library: A library for permutations and combinations.
pqueue library: Reliable, persistent, fast priority queues.
PSQueue library: Priority Search Queue
quickset library: Very fast and memory-compact query-only set and map structures
ralist library: Random access list with a list compatible interface.
random-access-list library: Random-access lists in Haskell
randproc library: Data structures and support functions for working with random processes
RBTree library: Pure haskell Red-Black-Tree implemetation
relacion library: A relation data structure.
relation library: A data structure representing Relations on Sets.
repa library: High performance, regular, shape polymorphic parallel arrays.
repa-algorithms library: Algorithms using the Repa array library.
repa-bytestring library: (deprecated)
repa-devil library: Support for image reading and writing of Repa arrays using in-place FFI calls
repa-examples programs: Examples using the Repa array library.
repa-io library: Read and write Repa arrays in various formats.
representable-functors library: Representable functors
representable-tries library: Tries from representations of polynomial functors
rosezipper library: Generic zipper implementation for Data.Tree
semigroups library: Haskell 98 semigroups
semigroups-actions library: Semigroups actions
signed-multiset library: Multisets with negative membership.
sirkel library: Sirkel, a Chord DHT
sparsebit library: Sparse bitmaps for pattern match coverage
spool library: Convert between ByteString and Vector.Storable without copying
statethread library: The ST monad and STRefs
static-hash library: Immutable hash
suffixtree library: Efficient, lazy suffix tree implementation
swapper library: Transparently swapping data from in-memory structures to disk
TernaryTrees library and program: Efficient pure ternary tree Sets and Maps
thrist library: Type-threaded list
tie-knot library: "Ties the knot" on a given set of structures that reference each other by keys.
translatable-intset library and program: Integer sets with a constant time translate operation.
TreeStructures library: A collection of heaps and search trees
tst library: BK-tree implementation
vector library: Efficient Arrays
vector-clock library: Vector clocks for versioning message flows
vector-heterogenous library: A type-safe library for vectors whose elements can be of any type, ...
vector-instances library: Orphan Instances for 'Data.Vector'
vector-mmap library: Memory map immutable and mutable vectors
vector-static library: Statically checked sizes on Data.Vector
void library: A Haskell 98 logically uninhabited data type
yarr library: Yet another array library

Database

acid-state library: Add ACID guarantees to any serializable Haskell data structure.
anydbm library and program: Interface for DBM-like database systems
bbdb library: Ability to read, write, and examine BBDB files
BerkeleyDB library: Berkeley DB binding
berkeleydb library: Pretty BerkeleyDB v4 binding.
BerkeleyDBXML library: Berkeley DB XML binding
cassandra-cql library: Haskell client for Cassandra's CQL protocol
cassandra-thrift library: thrift bindings to the cassandra database
cassy library: A high level driver for the Cassandra datastore
couch-hs library and program: A CouchDB view server for Haskell.
CouchDB library: CouchDB interface
couchdb-conduit library: Couch DB client library using http-conduit and aeson
couchdb-enumerator library: Couch DB client library using http-enumerator and aeson
CurryDB library and programs: CurryDB: In-memory Key/Value Database
cypher library: Haskell bindings for the neo4j "cypher" query language
database-migrate library: Database versioning and migration (experimental)
database-study library: Demonstrate how a database can be implemented the functional way
datalog library: An implementation of datalog in Haskell
dbf library: Read and write XBase ".dbf" files
DBlimited program: A command-line SQL interface for flat files (tdf,csv,etc.)
dbmigrations library and programs: An implementation of relational database "migrations"
direct-sqlite library: Low-level binding to SQLite3. Includes UTF8 and BLOB support.
DSH library: Database Supported Haskell
esqueleto library: Bare bones, type-safe EDSL for SQL queries on persistent backends.
ez-couch library: A high level static library for working with CouchDB
FerryCore library: Ferry Core Components
groundhog library: Type-safe datatype-database mapping library.
groundhog-mysql library: MySQL backend for the groundhog library.
groundhog-postgresql library: PostgreSQL backend for the groundhog library.
groundhog-sqlite library: Sqlite3 backend for the groundhog library
groundhog-th library: Type-safe datatype-database mapping library.
HandlerSocketClient library: Haskell implementation of a HandlerSocket client (API).
haskell-tyrant library: Haskell implementation of the Tokyo Tyrant binary protocol
haskelldb library: A library of combinators for generating and executing SQL statements.
haskelldb-connect-hdbc library: Bracketed HDBC session for HaskellDB
haskelldb-connect-hdbc-catchio-mtl library: Bracketed HaskellDB HDBC session using MonadCatchIO-mtl
haskelldb-connect-hdbc-catchio-tf library: Bracketed HaskellDB HDBC session using MonadCatchIO-transformers
haskelldb-connect-hdbc-catchio-transformers library: Bracketed HaskellDB HDBC session using MonadCatchIO-transformers
haskelldb-connect-hdbc-lifted library: Bracketed HaskellDB HDBC session using lifted-base
haskelldb-dynamic library and program: HaskellDB support for the dynamically loaded drivers.
haskelldb-flat library and program: An experimental HaskellDB back-end in pure Haskell (no SQL)
haskelldb-hdbc library: HaskellDB support for HDBC.
haskelldb-hdbc-mysql library and program: HaskellDB support for the HDBC MySQL driver.
haskelldb-hdbc-odbc library and program: HaskellDB support for the HDBC ODBC driver.
haskelldb-hdbc-postgresql library and program: HaskellDB support for the HDBC PostgreSQL driver.
haskelldb-hdbc-sqlite3 library and program: HaskellDB support for the HDBC SQLite driver.
haskelldb-hsql library: HaskellDB support for HSQL.
haskelldb-hsql-mysql library and program: HaskellDB support for the HSQL MySQL driver.
haskelldb-hsql-odbc library and program: HaskellDB support for the HSQL ODBC driver.
haskelldb-hsql-oracle library and program: HaskellDB support for the HSQL Oracle driver.
haskelldb-hsql-postgresql library and program: HaskellDB support for the HSQL PostgreSQL driver.
haskelldb-hsql-sqlite library and program: HaskellDB support for the HSQL SQLite driver.
haskelldb-hsql-sqlite3 library and program: HaskellDB support for the HSQL SQLite3 driver.
haskelldb-th library: Template Haskell utilities for HaskellDB.
haskelldb-wx library: HaskellDB support for WXHaskell.
hasparql-client library: This package enables to write SPARQL queries to remote endpoints.
HDBC library and program: Haskell Database Connectivity
HDBC-mysql library: MySQL driver for HDBC
HDBC-odbc library and program: ODBC driver for HDBC
HDBC-postgresql library and program: PostgreSQL driver for HDBC
HDBC-postgresql-hstore library: Manipulate data in PostgreSQL "hstore" columns.
HDBC-sqlite3 library and program: Sqlite v3 driver for HDBC
hdbc-tuple library: Type save tuples for HDBC
hedis library: Client library for the Redis datastore: supports full command set, pipelining.
hedis-pile library: Caching mandatory data with Redis
hedis-tags library: Tags for hedis
hesql program: Haskell's embedded SQL
hmemdb library: In-memory relational database
HongoDB library: A Simple Key Value Store
hs-cdb library: A library for reading CDB (Constant Database) files.
hscassandra library: cassandra database interface
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsparql library: A SPARQL query generator and DSL, and a client to query a SPARQL server.
hsql library: Database access from Haskell.
hsql-mysql library: MySQL driver for HSQL.
hsql-odbc library: A Haskell Interface to ODBC.
hsql-postgresql library: A Haskell Interface to PostgreSQL via the PQ library.
hsql-sqlite3 library: SQLite3 driver for HSQL.
hsSqlite3 library: Sqlite3 bindings
hssqlppp library: SQL parser and type checker
io-storage library: A key-value store in the IO monad.
json2-hdbc library: Support JSON for SQL Database.
keyvaluehash library: Pure Haskell key/value store implementation
KyotoCabinet library: Kyoto Cabinet DB bindings
kyotocabinet library: Mid level bindings to Kyoto Cabinet
language-sqlite library: Full parser and generator for SQL as implemented by SQLite3
leveldb-haskell library: Haskell bindings to LevelDB
libpq library: libpq binding for Haskell
memo-sqlite library: memoize functions using SQLite3 database
MetaHDBC library: Statically checked database access
monarch library: Monadic interface for TokyoTyrant.
mongoDB library: Driver (client) for MongoDB, a free, scalable, fast, document DBMS
mongodb-queue library: a queue using MongoDB
mysql library: A low-level MySQL client library.
mysql-simple library: A mid-level MySQL client library.
narc library: Query SQL databases using Nested Relational Calculus embedded in Haskell.
Pathfinder library: Relational optimiser and code generator
PCLT-DB library: An addon to PCLT package: enchance PCLT catalog with PostgreSQL powers.
perdure library and program: Robust persistence for acyclic immutable data
persistent library: Type-safe, multi-backend data serialization.
persistent-hssqlppp library: Declare Persistent entities using SQL SELECT query syntax
persistent-mongoDB library: Backend for the persistent library using mongoDB.
persistent-mysql library: Backend for the persistent library using MySQL database server.
persistent-postgresql library: Backend for the persistent library using postgresql.
persistent-protobuf library: Template-Haskell helpers for integrating protobufs with persistent.
persistent-sqlite library: Backend for the persistent library using sqlite3.
persistent-template library: Type-safe, non-relational, multi-backend persistence.
pgsql-simple library: A mid-level PostgreSQL client library.
pool-conduit library: Resource pool allocations via ResourceT.
PostgreSQL library: Thin wrapper over the C postgresql library
postgresql-libpq library: low-level binding to libpq
postgresql-simple library: Mid-Level PostgreSQL client library
pure-cdb library: Another pure-haskell CDB (Constant Database) implementation
qudb program: Quite Useless DB
redis library: A driver for Redis key-value database
redis-hs library: A simple Redis library for Haskell
redis-simple library: Simple redis bindings for Haskell
RefSerialize library: Write to and read from ByteStrings maintaining internal memory references
resource-pool library: A high-performance striped resource pooling implementation
resource-pool-catchio library: Fork of resource-pool, with a MonadCatchIO constraint
rethinkdb library: RethinkDB client library for haskell
sednaDBXML library: Sedna C API XML Binding
shake-extras library: Extra utilities for shake build systems
shapefile library: Parser and related tools for ESRI shapefile format
sirkel library: Sirkel, a Chord DHT
snaplet-riak library: A Snaplet for the Riak database
snaplet-sedna library: Snaplet for Sedna Bindings. Essentailly a rip of snaplet-hdbc.
sphinx library: Haskell bindings to the Sphinx full-text searching daemon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
SQLDeps library: Calculate db-data dependencies of functions
sqlite library: Haskell binding to sqlite3
sqlite-simple library: Mid-Level SQLite client library
sqlvalue-list library: Class and instances for conversion to list of SqlValue.
structured-mongoDB library: Structured MongoDB interface
Sysmon library: Sybase 15 sysmon reports processor
ta library: Transito Abierto: convenience library when using Takusen and Oracle.
TableAlgebra library: Ferry Table Algebra
tablestorage library: Azure Table Storage REST API Wrapper
Takusen programs: Database library with left-fold interface, for PostgreSQL, Oracle, SQLite, ODBC.
TCache library: A Transactional cache with user-defined persistence
tccli program: TokyoCabinet CLI interface
templatepg library: A PostgreSQL access library with compile-time SQL type inference
tokyocabinet-haskell library: Haskell binding of Tokyo Cabinet
tokyotyrant-haskell library: FFI bindings to libtokyotyrant
txt-sushi library and programs: The SQL link in your *NIX chain
wai-middleware-cache-redis library: Redis backend for wai-middleware-cache
yesod-persistent library: Some helpers for using Persistent from Yesod.

Datamining

HasGP library: A Haskell library for inference using Gaussian processes
hslibsvm library: A FFI binding to libsvm.
HSvm library: Haskell Bindings for libsvm

Date

discordian-calendar library: library for handling Discordian calendar dates

Debian

cabal-debian library and program: Create a debianization for a cabal package
debian library and programs: Modules for working with the Debian package system
dpkg library: libdpkg bindings

Debug

bytedump library and program: Flexible byte dump helpers for human readers.
DataTreeView library: A GTK widget for displaying arbitrary Data.Data.Data instances
debug-diff library: Display a colorized diff between two Haskell values
DebugTraceHelpers library: Convenience functions and instances for Debug.Trace
ghc-datasize library: Determine the size of data structures in GHC's memory
ghc-dup library: Explicitly prevent sharing
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
ghc-heap-view library: Extract the heap representation of Haskell values and thunks
ghc-vis library: Live visualization of data structures in GHCi
GHood library: A graphical viewer for Hood
hood library: Debugging by observing in place
hpc-strobe library: Hpc-generated strobes for a running Haskell program
htrace library: Hierarchical tracing for debugging of lazy evaluation
jdi library and program: Implementation of Java Debug Interface
KiCS-debugger library and program: debug features for kics
KiCS-prophecy library and program: a transformation used by the kics debugger
linux-perf library and programs: Read files generated by perf on Linux
repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
simple-reflect library: Simple reflection of expressions containing variables
trace-call library: functions for logging the arguments and results of function calls
trace-function-call library: Easy lightweight tracing of function arguments and results for ad hoc debugging
traced library: Simple evaluation trace
vacuum library: Graph representation of the GHC heap
vacuum-graphviz library: A library for transforming vacuum graphs into GraphViz output

Demo

gearbox program: zooming rotating fractal gears graphics demo
Pup-Events-Demo programs: A networked event handling framework for hooking into other programs.
snowglobe program: randomized fractal snowflakes demo

Dependent Types

Agda library and programs: A dependently typed functional programming language and proof assistant
Agda-executable program: Command-line program for type-checking and compiling Agda programs
dependent-map library: Dependent finite maps (partial dependent products)
dependent-sum library: Dependent sum type
idris program: Functional Programming Language with Dependent Types
ivor library: Theorem proving library based on dependent type theory
nanoAgda program: A toy dependently-typed language
PandocAgda library and program: Pandoc support for literate Agda
pisigma library and program: A dependently typed core language
prim-uniq library: Opaque unique identifiers in primitive state monads
reflection library: Reifies arbitrary terms into types that can be reflected back into terms
singletons library: A framework for generating singleton types
uAgda program: A simplistic dependently-typed language with parametricity.

Desktop

arbtt programs: Automatic Rule-Based Time Tracker
dbus library: A client library for the D-Bus IPC system.
fdo-notify library: Desktop Notifications client
fdo-trash library and program: Utilities related to freedesktop Trash standard.
gnome-keyring library: Bindings for libgnome-keyring
libnotify library: Haskell binding for Libnotify
todos library and program: Easy-to-use TODOs manager.
tracker library: Client library for Tracker metadata database, indexer and search tool

Desktop Environment

manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-core library: The core of Manatee.

Development

addLicenseInfo program: Adds license info to the top of a file.
air library: air
air-extra library: air-extra
alex program: Alex is a tool for generating lexical analysers in Haskell
alex-meta library: Quasi-quoter for Alex lexers
anansi library and program: Simple literate programming preprocessor
anansi-hscolour library: Colorized looms for Anansi
anansi-pandoc library: Looms which use Pandoc to parse and produce a variety of formats.
anatomy library and program: Anatomy: Atomo documentation system
AndroidViewHierarchyImporter program: Android view hierarchy importer
arrowp program: preprocessor translating arrow notation into Haskell 98
AspectAG library: Attribute Grammars in the form of an EDSL
assembler library and program: Haskell Assembler
Aurochs program: Yet another parser generator for C/C++
avr-shake library: AVR Crosspack actions for shake build systems.
azurify library and program: A simple library for accessing Azure blob storage
bf-cata library
BigPixel program: Image editor for pixel art
bindings-bfd library: Bindings for libbfd, a library of the GNU `binutils'
BirdPP program: A preprocessor for Bird-style Literate Haskell comments with Haddock markup.
bliplib library: Support code for Blip.
BNFC library and program: A compiler front-end generator.
BNFC-meta library: Deriving Parsers and Quasi-Quoters from BNF Grammars
botpp library and program: Build tool for Lambdabot
buildbox library: Rehackable components for writing buildbots and test harnesses.
buildbox-tools program: Tools for working with buildbox benchmark result files.
buildwrapper library and program: A library and an executable that provide an easy API for a Haskell IDE
bumper program: Automatically bump package versions, also transitively.
c2hs program: C->Haskell FFI tool that gives some cross-language type safety
cabal-dev programs: Manage sandboxed Haskell build environments
cabal-file-th library: Template Haskell expressions for reading fields from a project's cabal file.
cabal-ghci library and program: Set up ghci with options taken from a .cabal file
cabal-meta library and program: build multiple packages at once
cabal-scripts library: Shell scripts for support of Cabal maintenance
cabal-sign program: Sign and verify Cabal packages.
cabal2ghci program: A tool to generate .ghci file from .cabal
cairo-appbase program: A template for building new GUI applications using GTK and Cairo.
cake library and program: A build-system library and driver
CCA library and program: preprocessor and library for Causal Commutative Arrows (CCA)
cgen library and programs: generates Haskell bindings and C wrappers for C++ libraries
change-monger library and program: Parse VCS changelogs into ChangeLogs
Coadjute library: A generic build tool
colorize-haskell library and program: Highligt Haskell source
Contract library: Practical typed lazy contracts.
cpphs library and program: A liberalised re-implementation of cpp, the C pre-processor.
criterion library: Robust, reliable performance measurement and analysis
criterion-to-html program: Convert criterion output to HTML reports
csv-nptools programs: A collection of CSV tools
darcs programs: a distributed, interactive, smart revision control system
darcs-beta programs: a distributed, interactive, smart revision control system
darcs-fastconvert program: Import/export git fast-import streams to/from darcs.
darcs-scripts library: Shell scripts for support of darcs workflow
darcs2dot program: Outputs dependencies of darcs patches in dot format.
darcsden programs: Darcs repository UI and hosting/collaboration app.
data-structure-inferrer program: Program that infers the fastest data structure available for your program
data-util library: utilities for handle data
DataTreeView library: A GTK widget for displaying arbitrary Data.Data.Data instances
derive library and program: A program and library to derive instances for data types
derive-gadt library and programs: Instance deriving for (a subset of) GADTs.
diet library: Discrete Interval Encoding Tree
disassembler library: Disassembler for X86 & AMD64 machine code
DPM library and programs: Darcs Patch Manager
dwarfadt library and programs: High-level wrapper around the dwarf library
dyre library: Dynamic reconfiguration in Haskell
edentv program: A Tool to Visualize Parallel Functional Program Executions
error-message library: Composable error messages.
fast-tags program: Fast incremental vi tags.
fay library and programs: A compiler for Fay, a Haskell subset that compiles to JavaScript.
fay-base library: The base package for Fay.
file-location library: common functions that show file location information
firstify library and program: Defunctionalisation for Yhc Core
flo library and program: Generate flow charts from your code base.
fugue library: A recapitulated prelude with minimal dependencies and profligate exports.
ghc-core program: Display GHC's core and assembly output in a pager
ghc-core-html program: Core to HTML display
ghc-datasize library: Determine the size of data structures in GHC's memory
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
ghc-gc-tune program: Graph performance of Haskell programs with different GC flags
ghc-make program: Accelerated version of ghc --make
ghc-man-completion program: Generate a bash completion from the GHC manpage
ghc-mod library and program: Happy Haskell Programming
ghc-mtl library: An mtl compatible version of the Ghc-Api monads and monad-transformers.
ghc-parmake library and program: A parallel wrapper for 'ghc --make'.
ghc-paths library: Knowledge of GHC's installation directories
ghc-pkg-autofix program: Simple utility to fix BROKEN package dependencies for cabal-install.
ghc-syb library: Data and Typeable instances for the GHC API.
ghc-syb-utils library: Scrap Your Boilerplate utilities for the GHC API.
ghc-vis library: Live visualization of data structures in GHCi
ghczdecode program: Decode Z-encoded strings from GHC
ght library and program: Trivial routines for inspecting git repositories
git-all program: Determine which Git repositories need actions to be taken
graph-visit library: Graph walk abstraction
graphmod program: Present the module dependencies of a program as a "dot" graph.
greencard-lib library: A foreign function interface pre-processor library for Haskell
grm library and program: grm grammar converter
gtk2hs-buildtools programs: Tools to build the Gtk2Hs suite of User Interface libraries.
guess-combinator library: Generate simple combinators given their type
GuiHaskell program: A graphical REPL and development environment for Haskell
hackage-proxy program: Provide a proxy for Hackage which modifies responses in some way.
hake library and program: make tool. ruby : rake = haskell : hake
haltavista program: looks for functions given a set of example input/outputs
happraise program: A small program for counting the comments in haskell source
happy program: Happy is a parser generator for Haskell
happy-meta library: Quasi-quoter for Happy parsers
HaRe programs: the Haskell Refactorer.
haskdogs program: Generate ctags file for haskell project directory and it's deps
haskell-docs program: A program to find and display the docs of a name from a given module.
hasktags program: Produces ctags "tags" and etags "TAGS" files for Haskell programs
hat library and programs: The Haskell tracer, generating and viewing Haskell execution traces
hdevtools program: Persistent GHC powered background server for FAST haskell development tools
hdirect library and program: An IDL compiler for Haskell
hfd program: Flash debugger
hgdbmi library: GDB Machine Interface: program-driven control of GDB
hit library and program: Git operations in haskell
hlint library and program: Source code suggestions
hmk library and program: A make alternative based on Plan9's mk.
hmumps program: Interpreter for the MUMPS langugae
hoogle library and program: Haskell API Search
hothasktags program: Generates ctags for Haskell, incorporating import lists and qualified imports
hp2any-core library: Heap profiling helper library
hp2any-graph library and programs: ...
hp2any-manager program: A utility to visualise and compare heap profiles.
hp2pretty program: generate pretty graphs from heap profiles
hpaco program: Modular template compiler
hpaco-lib library: Modular template compiler library
hpage program: A scrapbook for Haskell developers
Hs2lib library and programs: ...
hsb2hs program: Preprocesses a file, adding blobs from files as string literals.
hsbencher library: Flexible benchmark runner for Haskell and non-Haskell benchmarks.
hsc2hs program: A preprocessor that helps with writing Haskell bindings to C code
hscurses-fish-ex program: hscurses swimming fish example
hsenv program: Virtual Haskell Environment builder
hsfcsh programs: Incremental builder for flash
hssourceinfo programs: get haskell source code info
hstyle program: Checks Haskell source code for style compliance.
hsubconvert program: One-time, faithful conversion of Subversion repositories to Git
htags program: A Haskell98 parsing tags program similar to ctags.
hub program: For multiplexing GHC installations and providing development sandboxes
hugs2yc library: Hugs Front-end to Yhc Core.
ImperativeHaskell library: A library for writing Imperative style haskell.
interlude library: Replaces some Prelude functions for enhanced error reporting
ipatch program: interactive patch editor
jarfind library and program: Tool for searching java classes, members and fields in classfiles and JAR archives
java-character library: Functions to simulate Java's Character class.
kit program: A dependency manager for Xcode (Objective-C) projects
lambdabot library and program: Lambdabot is a development tool and advanced IRC bot
lambdabot-utils library: Utility libraries for the advanced IRC bot, Lambdabot
lambdiff program: Diff Viewer
Lastik library: A library for compiling programs in a variety of languages
LazyVault program: A simple sandboxing tool for Haskell packages.
leksah library and program: Haskell IDE written in Haskell
lhs2tex program: Preprocessor for typesetting Haskell sources with LaTeX
lhs2TeX-hl program: Literate highlighter preprocessor for lhs2tex
libgit library: Simple Git Wrapper
linux-perf library and programs: Read files generated by perf on Linux
loch library and program: Support for precise error locations in source files
loch-th library: Support for precise error locations in source files (Template Haskell version)
lushtags program: Create ctags compatible tags files for Haskell programs
macosx-make-standalone program: Make a macosx app standalone deployable
makedo library: Helper for writing redo scripts in Haskell
markdown-unlit library and program: Literate Haskell support for Markdown
maybench library and programs: Automated benchmarking tool
MetaObject library: A meta-object system for Haskell based on Perl 6
microbench library: Microbenchmark Haskell code
monadtransform library: A type-class for transforming monads (homomorphism) in a transformer
mps library: simply oo
mueval library and programs: Safely evaluate pure Haskell expressions
murder library: MUtually Recursive Definitions Explicitly Represented
NoSlow programs: Microbenchmarks for various array libraries
nptools programs: A collection of random tools
nsis library and program: DSL for producing Windows Installer using NSIS.
nyan program: Bored? Nyan cat!
package-o-tron library and programs: Utilities for working with cabal packages and your package database
package-vt program: Haskell Package Versioning Tool
pcap-conduit library: Conduit <-> libpcap
pdynload library: pdynload is polymorphic dynamic linking library.
pisigma library and program: A dependently typed core language
pkggraph program: Package dependency graph for installed packages
placeholders library: Placeholders for use while developing Haskell code
pointful program: Pointful refactoring tool
porter library: Implementation of the Porter stemming algorithm
prof2dot program: Convert GHC profiles into GraphViz's dot format
prof2pretty programs: generate pretty source from time/allocation profiles
progression library: Automates the recording and graphing of criterion benchmarks
project-template library: Specify Haskell project templates and generate files
prototype library: prototype-based programming on Haskell
pseudomacros library: cpp-style built-in macros using Template Haskell
pushme program: Tool to synchronize multiple directories with rsync, zfs or git-annex
python-pickle library and program: Serialization/deserialization using Python Pickle format.
QuickAnnotate library and program: Annotation Framework
rehoo program: Rebuild default.hoo from many .hoo files in the current directory
repl library: IRC friendly REPL library.
restyle library and program: Convert between camel case and separated words style.
ReviewBoard library and programs: Haskell bindings to ReviewBoard
ruler program: Ruler tool for UHC
ruler-core program
scan program: lexical style suggestions for source code
scion library and program: Haskell IDE library
scion-browser library and program: Command-line interface for browsing and searching packages documentation
scons2dot program: Generates graphviz file of scons dependency information
scope library: An interactive renderer for plotting time-series data
scope-cairo library and program: An interactive renderer for plotting time-series data
sexp-show program: Produce a s-expression representation of Show values.
shake library and programs: Build system library, like Make, but more accurate dependencies.
shaker library and program: simple and interactive command-line build tool
shellish library: shell-/perl- like (systems) programming in Haskell
shelly library: shell-like (systems) programming in Haskell
shelly-extra library: shelly features that require extra dependencies
shuffle library and program: Shuffle tool for UHC
sizes program: Recursively show space (size and i-nodes) used in subdirectories
slice-cpp-gen program: Generate C++ skeletons from slice files
SourceGraph program: Static code analysis using graph-theoretic techniques.
sourcemap library: Implementation of source maps as proposed by Google and Mozilla.
sparsebit library: Sparse bitmaps for pattern match coverage
spy program: A compact file system watcher for Mac OS X, Linux and Windows
steeloverseer program: A file watcher.
stepwise library
SyntaxMacros library: Syntax Macros in the form of an EDSL
testloop library: Quick feedback loop for test suites
th-fold library: TH fold generator
threadscope program: A graphical tool for profiling parallel Haskell programs.
tkyprof programs: A web-based visualizer for GHC Profiling Reports
TraceUtils library: Functions that should have been in Debug.Trace
typalyze programs: Analyzes Haskell source files for easy reference
type-prelude library: Partial port of prelude to the type level. Requires GHC 7.6.1.
typeof program: Small script for inferring types
uhc-util library: UHC utilities
ui-command library and program: A framework for friendly commandline programs
UtilityTM library: Utility functions that are missing from the standard library
uuagc library and program: Attribute Grammar System of Universiteit Utrecht
uuagc-bootstrap library and program: Attribute Grammar System of Universiteit Utrecht
uuagc-cabal library: Cabal plugin for the Universiteit Utrecht Attribute Grammar System
vacuum-cairo library: Visualize live Haskell data structures using vacuum, graphviz and cairo
vacuum-opengl library and program: Visualize live Haskell data structures using vacuum, graphviz and OpenGL.
vacuum-ubigraph library: Visualize Haskell data structures using vacuum and Ubigraph
vcsgui library and programs: GUI library for source code management systems
vcswrapper library and program: Wrapper for source code management systems
virthualenv program: Virtual Haskell Environment builder
visual-graphrewrite library and program: Visualize the graph-rewrite steps of a Haskell program
visual-prof program: Create a visual profile of a program's source code
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell
ycextra library: Additional utilities to work with Yhc Core.
yhccore library: Yhc's Internal Core language.
yi programs: The Haskell-Scriptable Editor
yi-contrib library: Add-ons to Yi, the Haskell-Scriptable Editor
zoom-cache library and program: A streamable, seekable, zoomable cache file format

Diagnostics

trifecta library: A modern parser combinator library with convenient diagnostics

Digest

murmur-hash library: MurmurHash2 implementation for Haskell.
murmurhash3 library: 32-bit non-cryptographic hashing

Disassembler

disassembler library: Disassembler for X86 & AMD64 machine code
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64

Distributed Computing

AERN-Net library: Compositional lazy dataflow networks for exact real number computation
aws library and programs: Amazon Web Services (AWS) for Haskell
aws-sdk library: AWS SDK for Haskell
cctools-workqueue library: High-level interface to CCTools' WorkQueue library
DSTM library and programs: A framework for using STM within distributed systems
edenmodules library: Semi-explicit parallel programming library
edenskel library: Semi-explicit parallel programming skeleton library
happstack library and program: The haskell application server stack + code generation
happstack-contrib library and program: Web related tools and services.
happstack-helpers library: Convenience functions for Happstack.
happstack-static-routing library: Support for static URL routing with overlap detection for Happstack.
haskell-mpi library and programs: Distributed parallel programming in Haskell using MPI.
hdph library and programs: Haskell distributed parallel Haskell
hdph-closure library: Explicit closures in Haskell distributed parallel Haskell
Holumbus-Distribution library and programs: intra- and inter-program communication
Holumbus-MapReduce library and programs: a distributed MapReduce framework
Holumbus-Storage library and programs: a distributed storage system
net-concurrent library: Concurrent over the network execution library
sirkel library: Sirkel, a Chord DHT
vector-clock library: Vector clocks for versioning message flows

Distribution

archlinux library: Support for working with Arch Linux packages.
archlinux-web library and programs: Website maintenance for Arch Linux packages
archnews program: Convert Arch Linux package updates in RSS to pretty markdown
binembed library and program: Embed data into object files.
binembed-example program: Example project using binembed to embed data in object files.
Blueprint library: Preview of a new build system.
cab program: A maintenance command of Haskell cabal packages
Cabal library: A framework for packaging Haskell software
cabal-debian library and program: Create a debianization for a cabal package
cabal-install program: The command-line interface for Cabal and Hackage.
cabal-install-bundle program: The (bundled) command-line interface for Cabal and Hackage.
cabal-install-ghc72 program: Temporary version of cabal-install for ghc-7.2
cabal-install-ghc74 program: Temporary version of cabal-install for ghc-7.4
cabal-macosx library and program: Cabal support for creating Mac OSX application bundles.
cabal-nirvana programs: Avoid Cabal dependency hell by constraining to known good versions.
cabal-progdeps program: Show dependencies of program being built in current directory
cabal-rpm program: RPM package creator for Haskell Cabal-based packages
cabal-setup program: The user interface for building and installing Cabal packages
cabal-sort programs: Topologically sort cabal packages
cabal-src program: Alternative install procedure to avoid the diamond dependency issue.
cabal-uninstall program: Uninstall cabal packages
cabal-upload program: Command-line tool for uploading packages to Hackage
cabal2arch program: Create Arch Linux packages from Cabal packages.
cabal2doap program: Cabal to Description-of-a-Project (DOAP)
cabal2nix programs: Convert Cabal files into Nix build instructions
cabalgraph program: Generate pretty graphs of module trees from cabal files
cabalmdvrpm library and program: Create mandriva rpm from cabal package
cabalrpmdeps library and programs: Autogenerate rpm dependencies from cabal files
cabalvchk program: Verify installed package version against user-specified constraints.
capri program: A simple wrapper over cabal-install to operate in project-private mode.
cblrepo program: Tool to maintain a database of CABAL packages and their dependencies
darcs-graph program: Generate graphs of darcs repository activity
darcs-monitor program: Darcs repository monitor (sends email)
darcsden programs: Darcs repository UI and hosting/collaboration app.
darcswatch programs: Track application of Darcs patches
diffcabal program: Diff two .cabal files syntactically
dist-upload library and program: Generate/Upload cabal package to Hackage.
franchise library: A package for configuring and building Haskell software
hackage-db library: provide access to the Hackage database via Data.Map
hackage-plot program: Generate cumulative graphs of hackage uploads
hackage-sparks program: Generate sparkline graphs of hackage statistics
hackage2hwn program: Convert Hackage RSS feeds to wiki format for publishing on Haskell.org
hackage2twitter program: Send new Hackage releases to Twitter
hackport programs: Hackage and Portage integration tool
haskell-packages library: Haskell suite library for package management and integration with Cabal
haskell-platform-test program: A test system for the Haskell Platform environment
haskell-updater program: Rebuild Haskell dependencies in Gentoo
hellage programs: Distributed hackage mirror
highlight-versions program: Highlight package versions which differ from the latest version on Hackage
hmk library and program: A make alternative based on Plan9's mk.
hslackbuilder program: HSlackBuilder automatically generates slackBuild scripts from a cabal package
hub program: For multiplexing GHC installations and providing development sandboxes
jailbreak-cabal program: Strip version restrictions from build dependencies in Cabal files.
lscabal program: List exported modules from a set of .cabal files
mega-sdist program: Handles uploading to Hackage from mega repos
mkbndl program: Makes an OS X .app bundle from a binary.
mkcabal program: Generate cabal files for a Haskell project
packdeps library and program: Check your cabal packages for lagging dependencies.
packunused program: Tool for detecting redundant Cabal package dependencies
precis library and program: Diff Cabal packages.
standalone-haddock program: Generate standalone haddock documentation for a set of packages
yackage programs: Personal Hackage replacement for testing new packages.
zoom library and program: A rake/thor-like task runner written in Haskell

Documentation

activehs program: Haskell code presentation tool
activehs-base library: Basic definitions for activehs
archiver library and program: Archive supplied URLs in WebCite & Internet Archive
docidx program: Generate an HTML index of installed Haskell packages and their documentation.
Docs library: Documentation types library.
embeddock library and program: Embed the values in scope in the haddock documentation of the module
embeddock-example library: Example of using embeddock.
haddock program: A documentation-generation tool for Haskell libraries
hyakko program: Literate-style Documentation Generator
snm library and program: The Simple Nice-Looking Manual Generator.

Download Manager

manatee-curl library and program: Download Manager extension for Manatee.
manatee-terminal library and program: Terminal Emulator extension for Manatee.

Eden

edenmodules library: Semi-explicit parallel programming library
edenskel library: Semi-explicit parallel programming skeleton library
edentv program: A Tool to Visualize Parallel Functional Program Executions
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC

Editor

fix-imports program: Program to manage the imports of a haskell module
Hedi library and program: Line oriented editor
hpage program: A scrapbook for Haskell developers
Hsed library and program: Stream Editor in Haskell
leksah library and program: Haskell IDE written in Haskell
manatee-editor library and program: Editor extension for Manatee.
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell
yavie library and program: yet another visual editor
yi programs: The Haskell-Scriptable Editor
yi-contrib library: Add-ons to Yi, the Haskell-Scriptable Editor

Education

activehs program: Haskell code presentation tool
activehs-base library: Basic definitions for activehs
Craft3e library and programs: Code for Haskell: the Craft of Functional Programming, 3rd ed.
dia-base library: An EDSL for teaching Haskell with diagrams - data types
dia-functions library: An EDSL for teaching Haskell with diagrams - functions
hscurses-fish-ex program: hscurses swimming fish example
ideas library: Feedback services for intelligent tutoring systems
lambda-canvas library: Educational drawing canvas for FP explorers.
memscript program: Command line utility for memorizing scriptures or any other text
onu-course library: Code for the Haskell course taught at the Odessa National University in 2012
risc386 program: Reduced instruction set i386 simulator
smartword programs: Web based flash card for Word Smart I and II vocabularies
SoccerFun library and program: Football simulation framework for teaching functional programming
SoccerFunGL library and programs: OpenGL UI for the SoccerFun framework
TicTacToe library: A sub-project (exercise) for a functional programming course
twentefp library: Lab Assignments Environment at Univeriteit Twente
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell

Email

carboncopy program: Drop emails from threads being watched into special CC folder.
email-postmark library: ...
mbox-tools programs: A collection of tools to process mbox files
mime-mail library: Compose MIME email messages.
notmuch-haskell library and program: Binding for notmuch MUA library

Embedded

atom library: A DSL for embedded hard realtime applications.
atom-msp430 library: Convenience functions for using Atom with the MSP430 microcontroller family.
CarneadesDSL library: An implementation and DSL for the Carneades argumentation model.
copilot library and program: A stream DSL for writing embedded C programs.
copilot-c99 library and program: A compiler for Copilot targeting C99.
copilot-cbmc library: Copilot interface to a C model-checker.
copilot-core library: An intermediate representation for Copilot.
copilot-language library: A Haskell-embedded DSL for monitoring hard real-time distributed systems.
copilot-libraries library: A Haskell-embedded DSL for monitoring hard real-time distributed systems.
copilot-sbv library: A compiler for CoPilot targeting SBV.
Dung library: An implementation of the Dung argumentation frameworks.
ecu programs: Tools for automotive ECU development.
fault-tree library: A fault tree analysis library.
ImperativeHaskell library: A library for writing Imperative style haskell.
improve library: An imperative, verifiable programming language for high assurance applications.
srec library: Parsing and processing s-records.
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities
vcd library: Reading and writing VCD files.

Enumerator

attoparsec-enumerator library: Pass input from an enumerator to an Attoparsec parser.
attoparsec-text-enumerator library: (deprecated)
blaze-builder-enumerator library: Enumeratees for the incremental conversion of builders to bytestrings.
coroutine-enumerator library: Bridge between the monad-coroutine and enumerator packages.
enumerator library: Reliable, high-performance processing with left-fold enumerators
enumerator-fd library: Enumerator instances for monads-fd classes
enumerator-tf library: Enumerator instances for monads-tf classes
expat-enumerator library: Enumerator-based API for Expat
filesystem-enumerator library: Enumerator-based API for manipulating the filesystem.
iterIO library: Iteratee-based IO with pipe operators
iterio-server library: Library for building servers with IterIO
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
lzma-enumerator library: Enumerator interface for lzma/xz compression.
machines library: Networked stream transducers
netstring-enumerator library: Enumerator-based netstring parsing
network-enumerator library: Enumerators for network sockets
pcap-enumerator library: Convert a pcap into an enumerator.
pipes-conduit library: Conduit adapters
pipes-core library: Compositional pipelines
pipes-extra library and programs: Various basic utilities for Pipes.
twitter-enumerator library: Twitter API package with enumerator interface and Streaming API support.
xml-enumerator-combinators library and program: Parser combinators for xml-enumerator and compatible XML parsers.
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation
zlib-enum program: Enumerator interface for zlib compression

Error Handling

Dangerous library: Monads for operations that can exit early and produce warnings
error-message library: Composable error messages.
errors library: Simplified error-handling
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl2 classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
resumable-exceptions library: A monad transformer for resumable exceptions
spoon library: Catch errors thrown from pure computations.

Exceptions

exceptions library: Extensible optionally-pure exceptions

Factual

Facts library: A collection of facts about the real world.
wedding-announcement program: a wedding announcement

Failure

attempt library: Concrete data type for handling extensible exceptions as failures.
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
convertible-ascii library: convertible instances for ascii
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl2 classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
failure library: A simple type class for success/failure computations.
FailureT library: Failure Monad Transformer
resumable-exceptions library: A monad transformer for resumable exceptions
safe-failure library: Library for safe functions
safe-failure-cme library: control-monad-exception Instances for safe-failure

Fay

fay-ref library: Like IORef but for Fay.
snaplet-fay library: Fay integration for Snap with request- and pre-compilation.

Feed

manatee-reader library and program: Feed reader extension for Manatee.

FFI

bindings-apr library: Low level bindings to Apache Portable Runtime (APR)
bindings-apr-util library: Low level bindings to Apache Portable Runtime Utility (APR Utility)
bindings-audiofile library: Low level bindings to audiofile
bindings-bfd library: Bindings for libbfd, a library of the GNU `binutils'
bindings-cctools library: Bindings to the CCTools WorkQueue C library
bindings-directfb library: Low level bindings to DirectFB
bindings-DSL library: FFI domain specific language, on top of hsc2hs.
bindings-eskit library: Bindings to ESKit.
bindings-EsounD library: Low level bindings to EsounD (ESD; Enlightened Sound Daemon)
bindings-fann library: Low level bindings to FANN neural network library.
bindings-glib library: Low level bindings to GLib.
bindings-gobject library: Low level bindings supporting GObject and derived libraries.
bindings-gpgme library: Low level bindings to gpgme.
bindings-gsl library: Low level bindings to GNU GSL.
bindings-gts library: Low level bindings supporting GTS, the GNU Triangulated Surface Library
bindings-K8055 library: Bindings to Velleman K8055 dll
bindings-levmar library: Low level bindings to the C levmar (Levenberg-Marquardt) library
bindings-libcddb library: Low level binding to libcddb.
bindings-libffi library: Low level bindings to libffi.
bindings-libftdi library: Low level bindings to libftdi.
bindings-librrd library: Low level bindings to RRDtool
bindings-libusb library: Low level bindings to libusb.
bindings-libzip library: Low level bindings to libzip.
bindings-parport library: parport bindings
bindings-posix library: Low level bindings to posix.
bindings-ppdev library: PPDev bindings
bindings-sane library: FFI bindings to libsane
bindings-sc3 library: Low-level bindings to the SuperCollider synthesis engine library.
bindings-sqlite3 library: Low level bindings to sqlite3.
bindings-svm library: Low level bindings to libsvm.
bindings-uname library: Low-level binding to POSIX uname(3)
bindings-yices library: Bindings to the Yices theorem prover
com library: Haskell COM support library
curlhs library: bindings to libcurl, the multiprotocol file transfer library
gitlib library: Higher-level types for working with hlibgit2
haskell-mpi library and programs: Distributed parallel programming in Haskell using MPI.
hlibgit2 library: Low-level bindings to libgit2
hmatrix-gsl-stats library: GSL Statistics interface
IrrHaskell library: Haskell FRP binding to the Irrlicht game engine.
leveldb-haskell library: Haskell bindings to LevelDB
missing-foreign library: Convenience functions for FFI work
modulo library and program: Modular C code generator
MusicBrainz-libdiscid library: Binding to libdiscid by MusicBrainz
nitro library: Haskell bindings for Nitro
OpenCL library: Haskell high-level wrapper for OpenCL
OpenCLWrappers library: The OpenCL Standard for heterogenous data-parallel computing
Pathfinder library: Relational optimiser and code generator
sednaDBXML library: Sedna C API XML Binding
ViennaRNA-bindings library: ViennaRNA v2 bindings
zeromq-haskell library: Bindings to ZeroMQ 2.1.x
zeromq3-haskell library: Bindings to ZeroMQ 3.x

FFI Tools

fficxx library: automatic C++ binding generation
fficxx-runtime library: Runtime for fficxx-generated library
hacanon-light library: Template Haskell framework for automatic FFI code generation.
HSFFIG library and programs: Generate FFI import declarations from C include files
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.

File

binary-file library: read/write binary file

File Manager

manatee-filemanager library and program: File manager extension for Manatee.
RollingDirectory program: Limits the size of a directory's contents

Filesystem

fsnotify library: Cross platform library for file change notification.
partly library and program: Inspect, create, and alter MBRs.

Finance

eurofxref library: Free foreign exchange/currency feed from the European Central Bank
haslo library and programs: Loan calculator engine.
hledger library and program: The main command-line interface for the hledger accounting tool.
hledger-chart program: A pie chart image generator for the hledger accounting tool.
hledger-interest program: computes interest for a given account
hledger-irr program: computes the internal rate of return of an investment
hledger-lib library: Core data types, parsers and utilities for the hledger accounting tool.
hledger-vty program: A curses-style console interface for the hledger accounting tool.
hledger-web library and program: A web interface for the hledger accounting tool.
hquantlib library: HQuantLib is a port of essencial parts of QuantLib to Haskell
ofx library: Parser for OFX data
penny-bin programs: Extensible double-entry accounting system - binary and documentation
penny-lib programs: Extensible double-entry accounting system - library
rabocsv2qif library and program: A library and program to create QIF files from Rabobank CSV exports.
UMM program: A small command-line accounting tool

Financial

FpMLv53 library: A binding for the Financial Products Markup Language (v5.3)
hasloGUI program: Loan calculator Gtk GUI. Based on haslo (Haskell Loan) library.

Foreign

aligned-foreignptr library: An aligned ForeignPtr type
AppleScript library: Call AppleScript from Haskell, and then call back into Haskell.
arbb-vm library: FFI binding to the Intel Array Building Blocks (ArBB) virtual machine.
bindings-libzip library: Low level bindings to libzip.
bindings-yices library: Bindings to the Yices theorem prover
bits-atomic library and program: Atomic bit operations on memory locations for low-level synchronization
c-storable-deriving library: Generate C-like storable instances from datatypes
cinvoke library: A binding to cinvoke.
cpython library: Bindings for libpython
cuda library: FFI binding to the CUDA interface for programming NVIDIA GPUs
cufft library: Haskell bindings for the CUFFT library
enumset library: Sets of enumeration values represented by machine words
erlang library: FFI interface to Erlang.
errno library: a FFI utility
foreign-storable-asymmetric library: Types and instances for implementing a Storable with different peek and poke
greencard library and program: GreenCard, a foreign function pre-processor for Haskell.
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64
hlibev library: FFI interface to libev
hlibfam library: FFI interface to libFAM
hopencl library: Haskell bindings for OpenCL
hopenssl library: FFI bindings to OpenSSL's EVP digest interface
HPlot library and program: A minimal monadic PLplot interface for Haskell
hR library: R bindings and interface
hsdns library: Asynchronous DNS Resolver
hswip library: embedding prolog in haskell
hsyscall library: FFI to syscalls
hsyslog library: FFI interface to syslog(3) from POSIX.1-2001.
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
libffi library: A binding to libffi
libltdl library and program: FFI interface to libltdl
libxml-sax library: Bindings for the libXML2 SAX interface
LibZip library: Bindings to libzip, a library for manipulating zip archives.
mathlink library: Write Mathematica packages in Haskell
matlab library: Matlab bindings and interface
minimung program: Shows how to run grabber on Mac OS X
ncurses library: Modernised bindings to GNU ncurses
notmuch-haskell library and program: Binding for notmuch MUA library
Salsa library: A .NET Bridge for Haskell
storable library: Storable type class for variable-sized data
storable-record library and program: Elegant definition of Storable instances for records
storable-tuple library: Storable instance for pairs and triples
Thrift library: Haskell bindings for the Apache Thrift RPC system
thrift library: Haskell bindings for the Apache Thrift RPC system
winerror library: Error handling for foreign calls to the Windows API.
yajl library: Bindings for YAJL, an event-based JSON implementation

Foreign Binding

libxslt library: Binding to libxslt
rdtsc-enolan library: Binding to sources of high-efficiency, high-precision, ...
sundown library: Bindings to the sundown markdown library

Formal Methods

afv program: Infinite state model checking of iterative C programs.
CSPM-CoreLanguage library: Definition of a FDR-compatible CSP core-language.
CSPM-cspm library and program: cspm command line tool for analyzing CSPM specifications.
CSPM-FiringRules library: Firing rules semantic of CSPM
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.91
CSPM-Interpreter library: An interpreter for CSPM
CSPM-ToProlog library: some modules specific for the ProB tool
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
improve library: An imperative, verifiable programming language for high assurance applications.
opentheory library and program: The Haskell base
opentheory-primitive library and program: Haskell primitives used by OpenTheory packages
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
theoremquest library: A common library for TheoremQuest, a theorem proving game.
theoremquest-client program: A simple client for the TheoremQuest theorem proving game.
yices-painless library: An embedded language for programming the Yices SMT solver
z3 library: Bindings for the Z3 Theorem Prover

FRP

Animas library: Updated version of Yampa: a library for programming hybrid systems.
bot library: bots for functional reactive programming
buster library: Almost but not quite entirely unlike FRP
buster-gtk library: Almost but not quite entirely unlike FRP
buster-network library: Almost but not quite entirely unlike FRP
DefendTheKing programs: A simple RTS game
dow program: Dungeons of Wor
DysFRP library: dysFunctional Reactive Programming
DysFRP-Cairo library: dysFunctional Reactive Programming on Cairo
DysFRP-Craftwerk library: dysFunctional Reactive Programming on Craftwerk
elerea library: A minimalistic FRP library
elerea-examples programs: Example applications for Elerea
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-frp library: Functional Reactive Programming core
grapefruit-records library: A record system for Functional Reactive Programming
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
Moe library and program: A FRP library based on signal functions.
netwire library: Flexible wire arrows for FRP
peakachu library: Experiemental library for composable interactive programs
reactive library: Push-pull functional reactive programming
reactive-bacon library: FRP (functional reactive programming) framework
reactive-banana library: Practical library for functional reactive programming (FRP).
reactive-banana-wx library and programs: Examples for the reactive-banana library, using wxHaskell.
reactive-fieldtrip library: Connect Reactive and FieldTrip
reactive-glut library: Connects Reactive and GLUT
reactive-thread library and program: Reactive programming via imperative threads
reenact library: A reimplementation of the Reactive library.
rsagl-frp library: The RogueStar Animation and Graphics Library: Functional Reactive Programming
RxHaskell library: Reactive Extensions for Haskell
sodium library: Sodium Reactive Programming (FRP) System
tempus program: Interpreter for the FRP language Tempus
wxFruit library and program: An implementation of Fruit using wxHaskell.
Yampa library: Library for programming hybrid systems.
yampa-glut library: Connects Yampa and GLUT
YFrob library: Yampa-based library for programming robots

Functors

bifunctors library: Haskell 98 bifunctors
kan-extensions library: Kan extensions, the Yoneda lemma, and (co)density (co)monads
representable-functors library: Representable functors
representable-tries library: Tries from representations of polynomial functors

Game

4Blocks program: A tetris-like game (works with GHC 6.8.3 and Gtk2hs 0.9.13)
Advgame program: Lisperati's adventure game in Lisp translated to Haskell
Allure program: Near-future roguelike game in very early and active development
armada program: Space-based real time strategy game
astrds program: an incomplete 2d space game
babylon program: An implementation of a simple 2-player board game
bloxorz program: OpenGL Logic Game
board-games library and program: Three games for inclusion in a web server
boomslang program: Boomshine clone
breakout program: A simple Breakout game implementation.
brians-brain program: A Haskell implementation of the Brian's Brain cellular automaton
chesshs library: Simple library for validating chess moves and parsing PGN files
cuboid program: 3D Yampa/GLUT Puzzle Game
DAG-Tournament program: Real-Time Game Tournament Evaluator
DefendTheKing programs: A simple RTS game
dgs library: Haskell front-end for DGS' bot interface
dice library and program: Simplistic D&D style dice-rolling system.
dow program: Dungeons of Wor
edge program: Top view space combat arcade game
Eternal10Seconds program: A 2-D shooting game
falling-turnip program: Falling sand game/cellular automata simulation using regular parallel arrays.
fallingblocks program: A fun falling blocks game.
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
foo program: Paper soccer, an OpenGL game.
frag program: A 3-D First Person Shooter Game
freekick2 programs: A soccer game
FunGEn library: FUNctional Game ENgine
gameclock program: Game clock that shows two analog clock faces
GeBoP program: Several games
gemstone library: A simple library of helpers for SDL+GL games.
hangman program: Hangman implementation in Haskell written in two hours.
haskell-in-space programs: 'Asteroids' arcade games.
haskell-spacegoo library: Client API for Rocket Scissor Spacegoo
Haskelloids program: A reproduction of the Atari 1979 classic "Asteroids"
hback program: N-back memory game
HCard library: A library for implementing a Deck of Cards
hcube library and program: Virtual Rubik's cube of arbitrary size.
hetris program: Text Tetris
hfiar library and program: Four in a Row in Haskell!!
hfov library: Field-of-view calculation for low-resolution 2D raster grids.
hinvaders program: Space Invaders
Hipmunk library: A Haskell binding for Chipmunk.
HipmunkPlayground program: A playground for testing Hipmunk.
HODE library: Binding to libODE
HPong program: A simple OpenGL Pong game based on GLFW
hpylos program: AI of Pylos game with GLUT interface.
Hricket program: A Cricket scoring application.
hricket program: A Cricket scoring application.
hs-pgms library and program: Programmer's Mine Sweeper in Haskell
hsqml-morris program: HsQML-based implementation of Nine Men's Morris
hstzaar program: A two player abstract strategy game.
HTicTacToe program: An SDL tic-tac-toe game.
htiled library: Import from the Tiled map editor.
htzaar program: A two player abstract strategy game.
hyahtzee program: A Yahtzee game implementation in Haskell
L-seed library and programs: Plant growing programming game
labyrinth program: A complicated turn-based game
Level0 program: A Snake II clone written using SDL.
life program: Conway's Life cellular automaton
lostcities program: An implementation of an adictive two-player card game
mage program: Rogue-like
mancala program: Simple mancala game.
marionetta program: A study of marionetta movements.
mastermind program: console mastermind decypher
MazesOfMonad program: Console-based Role Playing Game
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
mines program: Minesweeper simulation using neural networks
minesweeper program: Minesweeper game which is always solvable without guessing
misfortune library and programs: fortune-mod clone
Monadius program: 2-D arcade scroller
Monaris program: A simple tetris clone
Nomyx program: A Nomic game in haskell
ois-input-manager library: wrapper for OIS input manager for use with hogre
PlayHangmanGame program: Play Hangman Game
Pollutocracy program: An imaginary world
Raincat program: A puzzle game written in Haskell with a cat in lead role
Rasenschach program: Soccer simulation
reversi program: Text-only reversi (aka othelo) game
roguestar program: Sci-fi roguelike game. Client application.
roguestar-engine program: Sci-fi roguelike game. Backend.
roguestar-gl library: Sci-fi roguelike game. Client library.
roguestar-glut program: Sci-fi roguelike game. GLUT front-end.
scrabble-bot program: Scrabble play generation.
secret-santa program: Secret Santa game assigner using QR-Codes
showdown program: A simple gtk based Russian Roulette game.
Shu-thing program: A vector shooter game
SoccerFun library and program: Football simulation framework for teaching functional programming
SoccerFunGL library and programs: OpenGL UI for the SoccerFun framework
SpaceInvaders program: Video game
starrover2 program: Space simulation game
sylvia program: Lambda calculus visualization
TeaHS library: TeaHS Game Creation Library
tetris program: A 2-D clone of Tetris
theoremquest library: A common library for TheoremQuest, a theorem proving game.
theoremquest-client program: A simple client for the TheoremQuest theorem proving game.
tic-tac-toe program: Useful if reading "Why FP matters" by John Hughes
topkata programs: OpenGL Arcade Game
Tournament library: Tournament related algorithms
turing-music program: Plays music generated by Turing machines with 5 states and 2 symbols
twisty library: Simulator of twisty puzzles à la Rubik's Cube
TypeClass program: Typing speed game
TypingTester program: Command Line Typing speed tester
wxAsteroids program: Try to avoid the asteroids with your space ship
wyvern program: An autoresponder for Dragon Go Server.
YACPong program: Yet Another Pong Clone using SDL.
ZMachine program: A Z-machine interpreter

Game Engine

bogre-banana library and program
HGamer3D library: Windows Game Engine for the Haskell Programmer
HGamer3D-Bullet-Binding library: Windows Game Engine for the Haskell Programmer - Bullet Bindings
HGamer3D-CEGUI-Binding library: Windows Game Engine for the Haskell Programmer - CEGUI Bindings
HGamer3D-Data library: Windows Game Engine for the Haskell Programmer - Data Definitions
HGamer3D-Enet-Binding library: Windows Game Engine for the Haskell Programmer - Enet Bindings
HGamer3D-Ogre-Binding library: Windows Game Engine for the Haskell Programmer - Ogre Bindings
HGamer3D-SFML-Binding library: Windows Game Engine for the Haskell Programmer - SFML Bindings
IrrHaskell library: Haskell FRP binding to the Irrlicht game engine.
LambdaHack library and programs: A roguelike game engine in early and active development

Games

lifter program: A boulderdash-like game and solution validator

Genealogy

family-tree library: A family tree library for the Haskell programming language.

Generic

HsTools library: Haskell helper functions
syb-extras library: Higher order versions of the Scrap Your Boilerplate classes

Generics

algebraic-classes library: Conversions between algebraic classes and F-algebras.
alloy library: Generic programming library
alloy-proxy-fd library: Some add-on instances for the Alloy library
Annotations library: Constructing, analyzing and destructing annotated trees
compdata library: Compositional Data Types
derive-IG library: Macro to derive instances for Instant-Generics using Template Haskell
emgm library: Extensible and Modular Generics for the Masses
fixplate library: Uniplate-style generic traversals for optionally annotated fixed-point types.
functorm library: Data.FunctorM (compatibility package)
gdiff-ig library: Generic diff for the instant-generics library
gdiff-th library: Generate gdiff GADTs and Instances.
generic-binary library: Generic Data.Binary derivation using GHC generics.
generic-deepseq library: Generic deep evaluation of data structures
generic-deriving library: Generic programming library for generalised deriving.
GenericPretty library: A generic, derivable, haskell pretty printer.
geniplate library: Use template Haskell to generate Uniplate-like functions.
gpah program: Generic Programming Use in Hackage
guarded-rewriting library: Datatype-generic rewriting with preconditions
instant-generics library: Generic programming library with a sum of products view
instant-zipper library: Heterogenous Zipper in Instant Generics
ligd library: Lightweight Implementation of Generics and Dynamics
ListLike library: Generic support for list-like structures
listlike-instances library: Extra instances of the ListLike class
multifocal library and program: Bidirectional Two-level Transformation of XML Schemas
multiplate library: Lightweight generic library for mutually recursive data types.
multiplate-simplified library: Shorter, more generic functions for Multiplate.
multirec library: Generic programming for families of recursive datatypes
multirec-alt-deriver library: Alternative multirec instances deriver
multirec-binary library: Generic Data.Binary instances using MultiRec.
one-liner library: Constraint-based generics
pointless-haskell library: Pointless Haskell library
pointless-lenses library: Pointless Lenses library
pointless-rewrite library: Pointless Rewrite library
putlenses library: Put-based lens library
regular library: Generic programming library for regular datatypes.
regular-extras library: Additional functions for regular: arbitrary, coarbitrary, and binary get/put.
regular-web library: Generic programming for the web
RepLib library: Generic programming library with representation types
rewriting library: Generic rewriting library for regular datatypes.
special-functors library: Control.Applicative, Data.Foldable, Data.Traversable (compatibility package)
spine library: Simple implementation of the generic spine view
Strafunski-StrategyLib library: Library for strategic programming
StrategyLib library
syb library: Scrap Your Boilerplate
syz library: Scrap Your Zippers
TYB library: Template Your Boilerplate - a Template Haskell version of SYB
unbound library: Generic support for programming with names and binders
unfoldable library: Class of data structures that can be unfolded.
uniplate library: Help writing simple, concise and fast generic operations.
xformat library: Extensible, type-safe formatting with scanf- and printf-like functions
yoko library: Generic Programming with Disbanded Data Types
zipper library: Generic zipper for families of recursive datatypes

Gentoo

fquery program: Installed package query tool for Gentoo Linux

Geometry

hgeometry library: Geometry types in Haskell
hipe library: Support for reading and writing ipe7 files (http://ipe7.sourceforge.net)

GHC

ghc-datasize library: Determine the size of data structures in GHC's memory
ghc-dup library: Explicitly prevent sharing
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
ghc-heap-view library: Extract the heap representation of Haskell values and thunks
ghc-man-completion program: Generate a bash completion from the GHC manpage
ghc-vis library: Live visualization of data structures in GHCi
hackager program: Hackage testing tool
isevaluated library: Check whether a value has been evaluated
linux-perf library and programs: Read files generated by perf on Linux
vacuum library: Graph representation of the GHC heap
vacuum-graphviz library: A library for transforming vacuum graphs into GraphViz output

GIS Programs

terrahs library: A Haskell GIS Programming Environment

Git

gitlib-s3 library: A repository backend for storing Git objects in Amazon S3

GPU

OpenCL library: Haskell high-level wrapper for OpenCL
shady-gen library: Functional GPU programming - DSEL & compiler

Graph

gbu library: planar graph embedding into a plane

Graphics

AC-Colour library: Efficient RGB colour types.
AC-EasyRaster-GTK library: GTK+ pixel plotting.
AC-PPM library: Trivial package for writing PPM images.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
aosd library: Bindings to libaosd, a library for Cairo-based on-screen displays
assimp library: The Assimp asset import library
Attrac program: Visualisation of Strange Attractors in 3-Dimensions
awesomium library: High-level Awesomium bindings.
awesomium-glut library: Utilities for using Awesomium with GLUT.
awesomium-raw library: Low-level Awesomium bindings.
bacteria program: braindead utility to compose Xinerama backgrounds
barchart library and program: Creating Bar Charts in Haskell
billeksah-forms library: Leksah library
billeksah-pane library: Leksah library
bindings-linux-videodev2 library: bindings to Video For Linux Two (v4l2) kernel interfaces
bitmap library: A library for handling and manipulating bitmaps (rectangular pixel arrays).
bitmap-opengl library: OpenGL support for Data.Bitmap.
bitmaps library: Bitmap library
blank-canvas library: HTML5 Canvas Graphics Library
blaze-svg library: SVG combinator library
Blobs library and program: Diagram editor
cairo library: Binding to the Cairo library.
cal3d library: Haskell binding to the Cal3D animation library.
cal3d-examples programs: Examples for the Cal3d animation library.
cal3d-opengl library: OpenGL rendering for the Cal3D animation library
carettah program: A presentation tool written with Haskell.
cellrenderer-cairo library: Cairo-based CellRenderer
chalkboard library and programs: Combinators for building and processing 2D images.
chalkboard-viewer library: OpenGL based viewer for chalkboard rendered images.
Chart library: A library for generating 2D Charts and Plots
Chart-gtk library: Utility functions for using the chart library with GTK
Chitra program: A platform independent mechanism to render graphics using vnc.
clay library: CSS preprocessor as embedded Haskell.
collada-output library and program: Generate animated 3d objects in COLLADA
collada-types library: Data exchange between graphic applications
colour library: A model for human colour/color perception
craftwerk library and programs: 2D graphics library with integrated TikZ output.
craftwerk-cairo library: Cairo backend for Craftwerk.
craftwerk-gtk library and program: Gtk UI for Craftwerk.
crocodile program: An offline renderer supporting ray tracing and photon mapping
CV library: OpenCV based machine vision library
cv-combinators library and programs: Functional Combinators for Computer Vision
deepzoom library: A DeepZoom image slicer. Only known to work on 32bit Linux
delaunay library: Build a Delaunay triangulation of a set of points
derivation-trees library: Typeset Derivation Trees via MetaPost
dia-base library: An EDSL for teaching Haskell with diagrams - data types
dia-functions library: An EDSL for teaching Haskell with diagrams - functions
diagrams library: Embedded domain-specific language for declarative vector graphics
diagrams-builder library and programs: hint-based build service for the diagrams graphics EDSL.
diagrams-cairo library: Cairo backend for diagrams drawing EDSL
diagrams-contrib library: Collection of user contributions to diagrams EDSL
diagrams-core library: Core libraries for diagrams EDSL
diagrams-gtk library: Backend for rendering diagrams directly to GTK windows
diagrams-haddock library and program: Preprocessor for embedding diagrams in Haddock documentation
diagrams-lib library: Embedded domain-specific language for declarative graphics
diagrams-postscript library: Postscript backend for diagrams drawing EDSL
diagrams-qrcode library: Draw QR codes to SVG, PNG, PDF or PS files.
diagrams-svg library: SVG backend for diagrams drawing EDSL.
diagrams-tikz library: TikZ backend for diagrams drawing EDSL
dot2graphml program: Converter from GraphViz .dot format to yEd GraphML
dvi-processing library: Read/write DVI and TFM file
dx9base library: Backend for a binding to the Microsoft DirectX 9 API.
dx9d3d library: A binding to the Microsoft DirectX 9 API.
dx9d3dx library: A binding to the Microsoft DirectX 9 D3DX API.
easyplot library: A tiny plotting library, utilizes gnuplot for plotting.
exif library: A Haskell binding to a subset of libexif
explore program: Experimental Plot data Reconstructor
FieldTrip library: Functional 3D
fig library: Manipulation of FIG files
font-opengl-basic4x6 library and program: Basic4x6 font for OpenGL
force-layout library: Simple force-directed layout
fractal program: Draw Newton, Julia and Mandelbrot fractals
free-game library: Create graphical applications for free
freenect library and program: Interface to the Kinect device.
freetype2 library and program: Haskell binding for FreeType 2 library
FreeTypeGL library and program: Loadable texture fonts for OpenGL.
FTGL library: Portable TrueType font rendering for OpenGL using the Freetype2 library
funcmp library: Functional MetaPost
gd library: A Haskell binding to a subset of the GD graphics library
ghci-diagrams library: Display simple diagrams from ghci
gl-capture library: simple image capture from OpenGL
glade library: Binding to the glade library.
GLFW library: A Haskell binding for GLFW
GLFW-b library: GLFW bindings
GLFW-b-demo program: GLFW-b test\/example\/demo
GLFW-OGL library: A binding for GLFW (OGL)
GLFW-task library: GLFW utility functions to use together with monad-task.
GLHUI library: Open OpenGL context windows in X11 with libX11
glintcollider program: A simple ray tracer in an early stage of development.
glome-hs library and program: ray tracer
GlomeTrace library: Ray Tracing Library
GlomeVec library: Simple 3D vector library
gloss library: Painless 2D vector graphics, animations and simulations.
gloss-devil library: Display images in Gloss using libdevil for decoding
gloss-examples programs: Examples using the gloss library
gloss-juicy library and program: Load any image supported by Juicy.Pixels in your gloss application
gloss-raster library: Parallel rendering of raster images.
GLURaw library: A raw binding for the OpenGL graphics system
GLUT library: A binding for the OpenGL Utility Toolkit
GLUtil library: Miscellaneous OpenGL utilities.
gmndl program: Mandelbrot Set explorer using GTK
gnuplot library and program: 2D and 3D plots using gnuplot
GoogleChart library: Generate web-based charts using the Google Chart API
GPipe library: A functional graphics API for programmable GPUs
GPipe-Collada library: Load GPipe meshes from Collada files
GPipe-Examples programs: Examples for the GPipes package
GPipe-TextureLoad library: Load GPipe textures from filesystem
graph-rewriting-gl library: OpenGL interface for interactive port graph rewriting
graph-rewriting-layout library: Force-directed node placement intended for incremental graph drawing
graph-rewriting-strategies library: Evaluation strategies for port-graph rewriting systems
graphics-drawingcombinators library and program: A functional interface to 2D drawing in OpenGL
graphics-formats-collada library: Load 3D geometry in the COLLADA format
graphicsFormats library: Classes for renderable objects.
graphicstools library and program: Tools for creating graphical UIs, based on wxHaskell.
graphviz library: Bindings to Graphviz for graph visualisation.
gruff library and program: fractal explorer GUI using the ruff library
gruff-examples programs: Mandelbrot Set examples using ruff and gruff
gtk library: Binding to the Gtk+ graphical user interface library.
gtk-jsinput library: A simple custom form widget for gtk which allows inputing of JSON values
gtk-mac-integration library: Bindings for the Gtk/OS X integration library.
gtk-serialized-event library: GTK+ Serialized event.
gtk-simple-list-view library: ...
gtk-toggle-button-list library: ...
gtk-toy library: Convenient Gtk canvas with mouse and keyboard input.
gtk-traymanager library: A wrapper around the eggtraymanager library for Linux system trays
gtkglext library: Binding to the GTK+ OpenGL Extension
gtkimageview library: Binding to the GtkImageView library.
gtksourceview2 library: Binding to the GtkSourceView library.
haha library and program: A simple library for creating animated ascii art on ANSI terminals.
happindicator library: Binding to the appindicator library.
haskgame library: Haskell game library.
HDRUtils library: Utilities for reading, manipulating, and writing HDR images
hevolisa program: Genetic Mona Lisa problem in Haskell
hevolisa-dph program: Genetic Mona Lisa problem in Haskell - using Data Parallel Haskell
hfractal program: OpenGL fractal renderer
HGamer3D-Ogre-Binding library: Windows Game Engine for the Haskell Programmer - Ogre Bindings
HGamer3D-SFML-Binding library: Windows Game Engine for the Haskell Programmer - SFML Bindings
HGL library: A simple graphics library based on X11 or Win32
hgl-example program: Various animations generated using HGL
hierarchical-clustering-diagrams library: Draw diagrams of dendrograms made by hierarchical-clustering.
Hieroglyph library: Purely functional 2D graphics for visualization.
hls library: Haskell Lindenmayer Systems
hogre library: Haskell binding to a subset of OGRE
hogre-examples programs: Examples for using Hogre.
hoodle-render library: Hoodle file renderer
HOpenCV library and program: A binding for the OpenCV computer vision library
HPDF library: Generation of PDF documents
HPlot library and program: A minimal monadic PLplot interface for Haskell
hps library and program: Haskell Postscript
hps-cairo library and programs: Cairo rendering for the haskell postscript library
HRay program: Haskell raytracer
HROOT library: Wrapper for ROOT
hs-captcha library: Generate images suitable for use as CAPTCHAs in online web-form security.
hs-gchart library: Haskell wrapper for the Google Chart API
HsHaruPDF library: Haskell binding to libharu (http://libharu.sourceforge.net/)
hsmagick library: FFI bindings for the GraphicsMagick library
hsparklines library: Sparklines for Haskell
hsqml library: Haskell binding for Qt Quick
hsqml-morris program: HsQML-based implementation of Nine Men's Morris
HTicTacToe program: An SDL tic-tac-toe game.
hubigraph library: A haskell wrap for Ubigraph
IcoGrid library: Library for generating grids of hexagons and pentagons mapped to a sphere.
IFS library and program: Iterated Function System generation for Haskell
ige-mac-integration library: Bindings for the Gtk/OS X integration library.
imagefilters library: Image Filters (contrast, brightness, gaussian blur, etc)
imagemagick library and programs: bindings to imagemagick library
imagesize-conduit library: Determine the size of some common image formats.
Imlib library
implicit library and program: Math-inspired programmatic 2&3D CAD: CSG, bevels, and shells; gcode export..
integration library: Fast robust numeric integration via tanh-sinh quadrature
internetmarke program: Shell command for constructing custom stamps for German Post
IrrHaskell library: Haskell FRP binding to the Irrlicht game engine.
jort program: JP's own ray tracer
jpeg library: A library for decoding JPEG files written in pure Haskell
JuicyPixels library: Picture loading/serialization (in png, jpeg, bitmap, gif, tiff and radiance)
JuicyPixels-repa library: Convenience functions to obtain array representations of images.
KdTree library and program: KdTree, for efficient search in K-dimensional point clouds.
lambda-canvas library: Educational drawing canvas for FP explorers.
lambdacube-bullet library: Example for combining LambdaCube and Bullet
lambdacube-engine library: 3D rendering engine written entirely in Haskell
lambdacube-examples programs: Examples for LambdaCube
language-glsl library and program: GLSL abstract syntax tree, parser, and pretty-printer
lui library: Purely FunctionaL User Interface
mandulia program: A zooming visualisation of the Mandelbrot Set as many Julia Sets.
minimung program: Shows how to run grabber on Mac OS X
nehe-tuts programs: Port of the NeHe OpenGL tutorials to Haskell.
netpbm library: Loading PBM, PGM, PPM image files
Noise library: A Haskell coherent noise generator based on libnoise
not-gloss library: Painless 3D graphics, no affiliation with gloss
not-gloss-examples programs: examples for not-gloss
null-canvas library: HTML5 Canvas Graphics Library - forked Blank Canvas
nymphaea program: An interactive GUI for manipulating L-systems
obj library: Reads and writes obj models.
ObjectIO library
off-simple library: A parser for simplified-syntax OFF files
OGL library: A context aware binding for the OpenGL graphics system
ois-input-manager library: wrapper for OIS input manager for use with hogre
OpenCL library: Haskell high-level wrapper for OpenCL
OpenCLRaw library: The OpenCL Standard for heterogenous data-parallel computing
OpenGL library: A binding for the OpenGL graphics system
OpenGLCheck library: Quickcheck instances for various data structures.
OpenGLRaw library: A raw binding for the OpenGL graphics system
OpenGLRaw21 library: The intersection of OpenGL 2.1 and OpenGL 3.1 Core
OpenVG library: OpenVG (ShivaVG-0.2.1) binding
OpenVGRaw library: Raw binding to OpenVG (ShivaVG-0.2.1 implementation).
pango library: Binding to the Pango text rendering engine.
pcd-loader library and program: PCD file loader.
pgm library: Pure Haskell implementation of PGM image format
phraskell program: A fractal viewer.
plot library: A plotting library, exportable as eps/pdf/svg/png or renderable with gtk
plot-gtk library: GTK plots and interaction with GHCi
Plot-ho-matic library: Real-time line plotter for protobuf-like data
ply-loader library and program: PLY file loader.
pnm library: PNM image format header parsing and pretty printing
poppler library: Binding to the Poppler.
printxosd program: Simple tool to display some text on an on-screen display
prizm library: A haskell library for computing with colors
probability library: Probabilistic Functional Programming
propane library: Functional synthesis of images and animations
reactive-fieldtrip library: Connect Reactive and FieldTrip
reactive-glut library: Connects Reactive and GLUT
repa-v4l2 library and program: Provides high-level access to webcams.
robot library: Simulate keyboard and mouse events
rsagl library: The RogueStar Animation and Graphics Library
scaleimage program: Scale an image to a new geometry
scenegraph library: Scene Graph
SDL library: Binding to libSDL
SDL-gfx library: Binding to libSDL_gfx
SDL-image library: Binding to libSDL_image
SDL-mixer library: Binding to libSDL_mixer
SDL-mpeg library: Binding to the SMPEG library
SDL-ttf library: Binding to libSDL_ttf
SFont library: SFont SDL Bitmap Fonts
SGdemo program: An example of using the SG and OpenGL libraries
shady-graphics library: Functional GPU programming - DSEL & compiler
simple-firewire library: Simplified interface for firewire cameras
smallpt-hs program: A Haskell port of the smallpt path tracer.
soegtk library: GUI functions as used in the book "The Haskell School of Expression".
splines library: B-Splines, other splines, and NURBS.
splot program: A tool for visualizing the lifecycle of many concurrent multi-staged processes.
Sprig library: Binding to Sprig
stb-image library: A wrapper around Sean Barrett's JPEG/PNG decoder
stb-truetype library: A wrapper around Sean Barrett's TrueType rasterizer library.
stunts program: A revival of the classic game Stunts (LambdaCube tech demo)
svgcairo library: Binding to the libsvg-cairo library.
SVGFonts library: Fonts from the SVG-Font format
SVGPath library: Parsing the path command of SVG
svgutils library and program: Helper functions for dealing with SVG files
testpattern program: Display a monitor test pattern
tga library: Reading and writing of tga image files
thumbnail library: generate thumbnail image
timeplot program: A tool for visualizing time series from log files.
triangulation library: triangulation of polygons
tsp-viz program: Real time TSP tour visualization.
v4l2 library: interface to Video For Linux Two (V4L2)
v4l2-examples programs: video for linux two examples
Vec-OpenGLRaw library: Instances and functions to interoperate Vec and OpenGL.
Vec-Transform library: This package is obsolete
vect library: A low-dimensional linear algebra library, tailored to computer graphics.
vect-opengl library: OpenGL support for the `vect' low-dimensional linear algebra library.
vector-space-opengl library: Instances of vector-space classes for OpenGL types
vte library: Binding to the VTE library.
vty-menu library: A lib for displaying a menu and getting a selection using VTY
webkit library: Binding to the Webkit library.
Win32 library: A binding to part of the Win32 library
wordcloud library: Library for generating word/tag clouds.
wumpus-basic library: Basic objects and system code built on Wumpus-Core.
wumpus-core library: Pure Haskell PostScript and SVG generation.
wumpus-drawing library: High-level drawing objects built on Wumpus-Basic.
wumpus-microprint library: Microprints - "greek-text" pictures.
wumpus-tree library: Drawing trees
X11 library: A binding to the X11 graphics library
X11-extras library: Missing bindings to the X11 graphics library
X11-rm library: A binding to the resource management functions missing from X11.
X11-xdamage library: A binding to the Xdamage X11 extension library
X11-xfixes library: A binding to the Xfixes X11 extension library
X11-xft library: Bindings to the Xft, X Free Type interface library, and some Xrender parts
x11-xim library: A binding to the xim of X11 graphics library
x11-xinput library: Haskell FFI bindings for X11 XInput library (-lXi)
X11-xshape library: A binding to the Xshape X11 extension library
Xauth library: A binding to the X11 authentication library
xbattbar program: Simple battery indicator
xdot library: Parse Graphviz xdot files and interactively view them using GTK and Cairo
xhb library: X Haskell Bindings
xosd library: A binding to the X on-screen display
xournal-render library: Xournal file renderer
xtest library: Thin FFI bindings to X11 XTest library
yampa-glut library: Connects Yampa and GLUT
yarr library: Yet another array library
yarr-image-io library: Image IO for Yarr library
yjsvg library: make SVG string from Haskell data
zsh-battery program: Ascii bars representing battery status

Graphs

dom-lt library: The Lengauer-Tarjan graph dominators algorithm.
fgl library: Martin Erwig's Functional Graph Library
fgl-visualize library: Convert FGL graphs to dot (graphviz) files
graph-rewriting library: Monadic graph rewriting of hypergraphs with ports and multiedges
graph-rewriting-gl library: OpenGL interface for interactive port graph rewriting
graph-rewriting-layout library: Force-directed node placement intended for incremental graph drawing
graph-rewriting-strategies library: Evaluation strategies for port-graph rewriting systems
graph-rewriting-trs program: ...
graph-utils library: A simple wrapper & quasi quoter for fgl.
graph-wrapper library: A wrapper around the standard Data.Graph with a less awkward interface
Graphalyze library: Graph-Theoretic Analysis library.
graphviz library: Bindings to Graphviz for graph visualisation.
igraph library: Bindings to the igraph C library.
metamorphic library: metamorphisms: ana . cata or understanding folds and unfolds
planar-graph library: A representation of planar graphs
xdot library: Parse Graphviz xdot files and interactively view them using GTK and Cairo

GUI

alsa-gui programs: Some simple interactive programs for sending MIDI control messages via ALSA
AutoForms library: GUI library based upon generic programming (SYB3)
barrie library: Declarative Gtk GUI library
binding-core library: Data Binding
binding-gtk library: Data Binding in Gtk2Hs
binding-wx library: Data Binding in WxHaskell
clutterhs library: Bindings to the Clutter animation library
DataTreeView library: A GTK widget for displaying arbitrary Data.Data.Data instances
gladexml-accessor library: Automagically declares getters for widget handles in specified interface file.
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
gtk-toy library: Convenient Gtk canvas with mouse and keyboard input.
gtk2hs-cast-glade library: A type class for cast functions of Gtk2hs: glade package
gtk2hs-cast-glib library: A type class for cast functions of Gtk2hs: glib package
gtk2hs-cast-gnomevfs library: A type class for cast functions of Gtk2hs: gnomevfs package
gtk2hs-cast-gtk library: A type class for cast functions of Gtk2hs: gtk package
gtk2hs-cast-gtkglext library: A type class for cast functions of Gtk2hs: gtkglext package
gtk2hs-cast-gtksourceview2 library: A type class for cast functions of Gtk2hs: gtksourceview2 package
gtk2hs-cast-th library: A type class for cast functions of Gtk2hs: TH package
gtk2hs-rpn library: Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation.
Gtk2hsGenerics library: Convenience functions to extend Gtk2hs.
gulcii program: graphical untyped lambda calculus interactive interpreter
HGamer3D-CEGUI-Binding library: Windows Game Engine for the Haskell Programmer - CEGUI Bindings
himerge program: Haskell Graphical User Interface for Emerge
hois library and program: OIS bindings
lgtk library and program: lens-based API for Gtk
live-sequencer library and programs: Live coding of MIDI music
ltk library: Leksah tool kit
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
pianola library: Remotely controlling Java Swing applications
reactive-banana-wx library and programs: Examples for the reactive-banana library, using wxHaskell.
sindre library and program: A programming language for simple GUIs
SybWidget library: Library which aids constructing generic (SYB3-based) widgets
uni-graphs library: Graphs
uni-htk library: Graphical User Interface for Haskell Programs
uni-uDrawGraph library: Graphs binding
wx library: wxHaskell
wxc library: wxHaskell C++ wrapper
wxcore library: wxHaskell core
WXDiffCtrl library: WXDiffCtrl
wxdirect library and program: helper tool for building wxHaskell
wxFruit library and program: An implementation of Fruit using wxHaskell.
WxGeneric library: Generic (SYB3) construction of wxHaskell widgets
xtc library: eXtended & Typed Controls for wxHaskell.

Hakyll

hakyll-contrib-links library: A hakyll library that helps maintain a separate links database.

Happstack

fay-hsx library: Clientside HTML generation for fay.
happstack-clientsession library: client-side session data
happstack-fay library: Support for using Fay with Happstack
happstack-fay-ajax library: Support for using Fay with Happstack
happstack-foundation library: Glue code for using Happstack with acid-state, web-routes, reform, and HSP
happstack-hamlet library: Support for Hamlet HTML templates in Happstack
happstack-heist library: Support for using Heist templates in Happstack
happstack-hsp library: Support for using HSP templates in Happstack
happstack-hstringtemplate library: Support for using HStringTemplate in Happstack
happstack-jmacro library: Support for using JMacro with Happstack
happstack-lite library: Happstack minus the useless stuff
happstack-monad-peel library: monad-peel instances for Happstack types
happstack-plugins library: The haskell application server stack + reload
happstack-server library: Web related tools and services.
happstack-server-tls library: extend happstack-server with https:// support (TLS/SSL)
happstack-yui library: Utilities for using YUI3 with Happstack.

Hardware

blink1 library: Control library for blink(1) LED from ThingM
chalmers-lava2000 library: Hardware description library
clash library: CAES Language for Synchronous Hardware (CLaSH)
crystalfontz library: Control Crystalfontz LCD displays.
ForSyDe library: ForSyDe's Haskell-embedded Domain Specific Language.
hArduino library: Control your Arduino board from Haskell.
HHDL library: Hardware Description Language embedded in Haskell.
hidapi library: Haskell bindings to HIDAPI
HueAPI library: API for controlling Philips Hue lights
kansas-lava library and programs: Kansas Lava is a hardware simulator and VHDL generator.
kansas-lava-cores library and programs: FPGA Cores Written in Kansas Lava.
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
parport library: Simply interfacing the parallel port on linux
serialport library: Cross platform serial port library.
usb library: Communicate with USB devices
usb-iteratee library: Iteratee enumerators for the usb package
vcd library: Reading and writing VCD files.
verilog library: A Verilog parser.
Wired library: Wire-aware hardware description
xilinx-lava library and programs: The Lava system for Xilinx FPGA design with layout combinators.
york-lava library: A library for digital circuit description.

Hash

hash library: Hashing tools
hashable-extras library: Higher-rank Hashable

Haskell

fast-tags program: Fast incremental vi tags.
fix-imports program: Program to manage the imports of a haskell module
haskell-reflect library: Reflect Haskell types.

Haskell2010

haskell2010 library: Compatibility with Haskell 2010

Haskell98

haskell98 library: Compatibility with Haskell 98

Help

CheatSheet program: A Haskell cheat sheet in PDF and literate formats.
hscurses-fish-ex program: hscurses swimming fish example

Heuristics

Binpack library: Common bin-packing heuristics.

IDE

fix-imports program: Program to manage the imports of a haskell module
hpage program: A scrapbook for Haskell developers
leksah library and program: Haskell IDE written in Haskell
leksah-server library and programs: Metadata collection for leksah
manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-core library: The core of Manatee.
manatee-editor library and program: Editor extension for Manatee.
manatee-template library and program: Template code to create Manatee application.
manatee-welcome library and program: Welcome module to help user play Manatee quickly.
wxhnotepad program: An example of how to implement a basic notepad with wxHaskell

Image

manatee-imageviewer library and program: Image viewer extension for Manatee.

Image Processing

unm-hip library: A Library for the manipulation of images

Image Viewer

manatee-imageviewer library and program: Image viewer extension for Manatee.
pvd programs: A photo viewer daemon application with remote controlling abilities.

Indexed

index-core library: Indexed Types

Interfaces

GuiTV library: GUIs for Tangible Values
hslogger library and program: Versatile logging framework
hslogger-template library: Automatic generation of hslogger functions
TV library: Tangible Values -- composable interfaces

Interpreter

caledon program: a logic programming language based on the calculus of constructions

IO-Streams

io-streams library: Simple, composable, and easy-to-use stream I/O
openssl-streams library: OpenSSL network support for io-streams.

IRC

clogparse library: Parse IRC logs such as the #haskell logs on tunes.org
irc-bytestring library: serialization and parsing of IRC messages
manatee-ircclient library and programs: IRC client extension for Manatee.
rss2irc program: watches an RSS/Atom feed and writes it to an IRC channel
simpleirc library: Simple IRC Library

IRC Client

manatee-ircclient library and programs: IRC client extension for Manatee.
xchat-plugin library and program: XChat

Java

j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.

Javascript

js-good-parts library: Javascript: The Good Parts -- AST & Pretty Printer
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities

JSON

aeson library: Fast JSON parsing and encoding
aeson-pretty library and program: JSON pretty-printing library and command-line tool.
aeson-qq library: Json Quasiquatation for Haskell.
curl-aeson library: Communicate with HTTP service using JSON
dead-simple-json library: Dead simple JSON parser, with some Template Haskell sugar.
digestive-functors-aeson library: Run digestive-functors forms against JSON
json-builder library: Data structure agnostic JSON serialization
JSON-Combinator library: A combinator library on top of a generalised JSON type
json-fu library: Generic JSON serialization / deserialization
json-qq library: Json Quasiquatation library for Haskell.
json-tools programs: A collection of JSON tools
json-types library: Basic types for representing JSON
json2 library: Library provides support for JSON.
json2-hdbc library: Support JSON for SQL Database.
json2-types library: Defined JSON data types and function for renders JSON to string.
JsonGrammar library: Combinators for bidirectional JSON parsing
log2json library and program: Turn log file records into JSON.
text-json-qq library: Json Quasiquatation for Haskell.
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation

JVM

dbjava library and program: Decompiler Bytecode Java
hs-java library: Java .class files assembler/disassembler
j2hs program: j2hs
java-bridge programs: Bindings to the JNI and a high level interface generator.
java-bridge-extras library: Utilities for working with the java-bridge package.
java-reflect library: Tools for reflecting on Java classes.
jdi library and program: Implementation of Java Debug Interface
pianola library: Remotely controlling Java Swing applications

LambdaCalculus

lambda-toolbox program: An application to work with the lambda calculus (for learning)

Language

abacate library: Parser for a language similar to Cucumber's Gherkin
antimirov library and program: Define the language containment (=subtyping) relation on regulare expressions.
applicative-quoters library: Quasiquoters for idiom brackets and an applicative do-notation
array-forth library and programs: A simple interpreter for arrayForth, the language used on GreenArrays chips.
ASN1 library: ASN.1 support for Haskell
aterm-utils library and program: Utility functions for working with aterms as generated by Minitermite
atom library: A DSL for embedded hard realtime applications.
atomo program: A highly dynamic, extremely simple, very fun programming language.
bash library: Bash generation library.
BASIC library: Embedded BASIC
berp library and program: An implementation of Python 3.
bidirectionalization-combined programs: ...
binary-literal-qq library: Extends Haskell with binary literals.
blip program: Python to bytecode compiler.
boolsimplifier library: Simplification tools for simple propositional formulas.
bound library: Making de Bruijn Succ Less
c0check program: Simple C0 Syntax Check
c0parser library: Simple C0 Parser
caledon program: a logic programming language based on the calculus of constructions
cap program: Interprets and debug the cap language.
chalmers-lava2000 library: Hardware description library
cil library: An interface to CIL.
circ library: A Compiler IR Compiler.
clash library: CAES Language for Synchronous Hardware (CLaSH)
clogparse library: Parse IRC logs such as the #haskell logs on tunes.org
clua program: C to Lua data wrapper generator
cmonad library: A library for C-like programming
codo-notation library: A notation for comonads, analogous to the do-notation for monads.
copilot library and program: A stream DSL for writing embedded C programs.
copilot-c99 library and program: A compiler for Copilot targeting C99.
copilot-cbmc library: Copilot interface to a C model-checker.
copilot-core library: An intermediate representation for Copilot.
copilot-language library: A Haskell-embedded DSL for monitoring hard real-time distributed systems.
copilot-libraries library: A Haskell-embedded DSL for monitoring hard real-time distributed systems.
copilot-sbv library: A compiler for CoPilot targeting SBV.
core library: External core parser and pretty printer.
CoreErlang library: Manipulating Core Erlang source code
CSPM-CoreLanguage library: Definition of a FDR-compatible CSP core-language.
CSPM-cspm library and program: cspm command line tool for analyzing CSPM specifications.
CSPM-FiringRules library: Firing rules semantic of CSPM
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.91
CSPM-Interpreter library: An interpreter for CSPM
css library: Minimal monadic CSS DSL.
curry-base library: Functions for manipulating Curry programs
curry-frontend library and program: Compile the functional logic language Curry to several intermediate formats
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-reify-cse library: Common Sub-Expression Elimination for graphs generated by Data.Reify.
data-treify library: Reify a recursive data structure into an explicit graph.
derive-gadt library and programs: Instance deriving for (a subset of) GADTs.
djinn-th library: Generate executable Haskell code from a type
DrHylo library and program: A tool for deriving hylomorphisms
DTC library: Data To Class transformation.
Ebnf2ps program: Peter's Syntax Diagram Drawing Tool
egison-quote library: A quasi quotes for using Egison expression in Haskell code
Elm library and programs: The Elm language module.
elm-server program: The Elm language server.
Eq program: Render math formula in ASCII, and perform some simplifications
extcore library: Libraries for processing GHC Core
fault-tree library: A fault tree analysis library.
feldspar-language library: A functional embedded language for DSP and parallelism
ForSyDe library: ForSyDe's Haskell-embedded Domain Specific Language.
forth-hll library: A simple eDSL for generating arrayForth code.
free-theorems library: Automatic generation of free theorems.
free-theorems-counterexamples library and program: Automatically Generating Counterexamples to Naive Free Theorems
free-theorems-seq library: Taming Selective Strictness
free-theorems-seq-webui program: Taming Selective Strictness
free-theorems-webui programs: CGI-based web interface for the free-theorems package.
freesect program: A Haskell syntax extension for generalised sections
fresh library: Introduce fresh variables into Haskell source code
ftshell program: Shell interface to the FreeTheorems library.
funpat library: A generalization of pattern matching
Ganymede program: An Io interpreter in Haskell.
gender library and program: Identify a persons gender by their first name
GoogleTranslate library: Interface to Google Translate API
GroteTrap library: Parser and selection library for expression languages.
GTALib library: A library for GTA programming
harp library: HaRP allows pattern-matching with regular expressions
haskarrow program: A dialect of haskell with order of execution based on dependency resolution
haskell-coffee library: Simple CoffeeScript API
haskell-lexer library: A fully compliant Haskell 98 lexer.
haskell-names library: Name resolution library for Haskell
haskell-src library: Support for manipulating Haskell source code
haskell-src-exts library: Manipulating Haskell source: abstract syntax, lexer, parser, and pretty-printer
haskell-src-exts-qq library: A quasiquoter for haskell-src-exts.
haskell-src-meta library: Parse source to template-haskell abstract syntax.
haskell-src-meta-mwotton library: Parse source to template-haskell abstract syntax.
haskell-type-exts library: A type checker for Haskell/haskell-src-exts
haspell library: Haskell bindings to aspell
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64
her-lexer library: A lexer for Haskell source code.
her-lexer-parsec library: Parsec frontend to "her-lexer" for Haskell source code.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
hint library: Runtime Haskell interpreter (GHC API wrapper)
hint-server library: A server process that runs hint.
HJavaScript library: HJavaScript is an abstract syntax for a typed subset of JavaScript.
HJScript library: HJScript is a Haskell EDSL for writing JavaScript programs.
HJVM library: A library to create a Java Virtual Machine and manipulate Java objects
hopencc library: Haskell binding to libopencc
hruby library: Embed Ruby in your Haskell program.
hs2dot program: Generate graphviz-code from Haskell-code.
hscolour library and program: Colourise Haskell code.
hse-cpp library: Preprocess+parse haskell code
hsp library: Haskell Server Pages is a library for writing dynamic server-side web pages.
HsParrot library: Haskell integration with Parrot virtual machine
HsPerl5 library: Haskell interface to embedded Perl 5 interpreter
hssqlppp library: SQL parser and type checker
hswip library: embedding prolog in haskell
hsx library and program: HSX (Haskell Source with XML) allows literal XML syntax in Haskell source code.
hsx2hs library and program: HSX (Haskell Source with XML) allows literal XML syntax in Haskell source code.
hubris library and program: Support library for Hubris, the Ruby <=> Haskell bridge
husk-scheme library and programs: R5RS Scheme interpreter, compiler, and library.
husk-scheme-libs library: Extra libraries for the husk Scheme platform.
ImperativeHaskell library: A library for writing Imperative style haskell.
improve library: An imperative, verifiable programming language for high assurance applications.
inch program: A type-checker for Haskell with integer constraints
indexed-do-notation library: Do notation for indexed monads
interpol library and program: GHC preprocessor and library to enable variable interpolation in strings
ixdopp program: A preprocessor for expanding "ixdo" notation for indexed monads
jarfind library and program: Tool for searching java classes, members and fields in classfiles and JAR archives
Javasf program: A utility to print the SourceFile attribute of one or more Java class files.
Javav program: A utility to print the target version of Java class files.
jdi library and program: Implementation of Java Debug Interface
jmacro library and programs: QuasiQuotation library for programmatic generation of Javascript code.
js-good-parts library: Javascript: The Good Parts -- AST & Pretty Printer
JsContracts library and program: Design-by-contract for JavaScript
jsmw library: Javascript Monadic Writer base package.
JsonGrammar library: Combinators for bidirectional JSON parsing
kansas-lava library and programs: Kansas Lava is a hardware simulator and VHDL generator.
kbq-gu programs: Rpoku spoken word programming language
kure library: Combinators for Strategic Programming
kure-your-boilerplate library: Generator for Boilerplate KURE Combinators
LambdaCalculator program: A basic lambda calculator with beta reduction and a REPL
LambdaPrettyQuote library: Quasiquoter, and Arbitrary helpers for the lambda calculus.
language-asn1 library and programs: Parsing of ASN1 definitions
language-boogie library and programs: Interpreter and language infrastructure for Boogie.
language-c library: Analysis and generation of C code
language-c-comments library: Extracting comments from C code
language-c-quote library: C/CUDA/OpenCL/Objective-C quasiquoting library.
language-cil library: Manipulating Common Intermediate Language AST
language-css library: CSS 2.1 syntax
language-dot library and program: A library for the analysis and creation of Graphviz DOT files
language-ecmascript library: JavaScript parser and pretty-printer library
language-ecmascript-analysis library: JavaScript analysis library
language-eiffel library: Parser and pretty printer for the Eiffel language.
language-glsl library and program: GLSL abstract syntax tree, parser, and pretty-printer
language-go library: A library for analysis and synthesis of Go code.
language-guess library: Guess at which language a text is written in using trigrams.
language-java library: Manipulating Java source: abstract syntax, lexer, parser, and pretty-printer
language-java-classfile library: Parser for Java .class files
language-javascript library: Parser for JavaScript
language-lua library: Lua parser and pretty-printer
language-objc library: Analysis and generation of Objective C code
language-puppet library: Tools to parse and evaluate the Puppet DSL.
language-python library: Parsing and pretty printing of Python code.
language-python-colour program: Generate coloured XHTML for Python code.
language-sh library: A package for parsing shell scripts
language-slice library: AST and parser for the ZeroC Slice language (Specification language for ICE)
language-sqlite library: Full parser and generator for SQL as implemented by SQLite3
lhs2tex program: Preprocessor for typesetting Haskell sources with LaTeX
lhs2TeX-hl program: Literate highlighter preprocessor for lhs2tex
LibClang library: Haskell bindings for libclang (a C++ parsing library)
linkcore program: Combines multiple GHC Core modules into a single module
lojban library and program: Useful utilities for the Lojban language
lojbanParser library and program: lojban parser
lojbanXiragan library and program: lojban to xiragan
lojysamban program: Prolog with lojban
LslPlus program: An execution and testing framework for the Linden Scripting Language (LSL)
ltl library: Using linear temporal logic (LTL) to verify embedded software and hardware.
luka library: Simple ObjectiveC runtime binding
MagicHaskeller library: Automatic inductive functional programmer by systematic search
maude library: An interface to the Maude rewriting system.
mcmc-synthesis library: MCMC applied to probabilistic program synthesis
mecha library and program: A constructive solid geometry (CSG) modeling language.
ministg program: an interpreter for an operational semantics for the STG machine.
ml-w library and program: Minimal ML language to to demonstrate the W type infererence algorithm.
modulo library and program: Modular C code generator
msgpack-idl library and program: An IDL Compiler for MessagePack
mueval library and programs: Safely evaluate pure Haskell expressions
NanoProlog library and program: Very small interpreter for a Prolog-like language
netlist library: Netlist AST
netlist-to-vhdl library: Convert a Netlist AST to VHDL
Nomyx-Language library: Language to express rules for Nomic
Nomyx-Rules library: Language to express rules for Nomic
oberon0 library and programs: Oberon0 Compiler
Obsidian library: Embedded language for GPU Programming
omega program: A purely functional programming language and a proof system
optimusprime program: A supercompiler for f-lite
paragon library and program: Paragon
Paraiso library: a code generator for partial differential equations solvers.
pec library and programs: pec embedded compiler
peggy library and program: The Parser Generator for Haskell
pisigma library and program: A dependently typed core language
Plural library: Pluralize English words
powerpc library: Tools for PowerPC programs.
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
prolog library: A Prolog interpreter written in Haskell.
prolog-graph program: A command line tool to visualize query resolution in Prolog.
prolog-graph-lib library: Generating images of resolution trees for Prolog queries.
Pugs program: A Perl 6 Implementation
readpyc program: Read and pretty print Python bytecode (.pyc) files.
really-simple-xml-parser library: A really simple XML parser
rope library: Tools for manipulating fingertrees of bytestrings with optional annotations
seal-module library: Template Haskell support for global configuration data
sexp library and program: S-Expression parsing/printing made fun and easy
shady-gen library: Functional GPU programming - DSEL & compiler
she library and program: A Haskell preprocessor adding miscellaneous features
shivers-cfg library: Implementation of Shivers' Control-Flow Analysis
show library: 'Show' instances for Lambdabot
shplit program: A Haskell pattern splitter with emacs attachments
sifflet program: A simple, visual, functional programming language.
sifflet-lib library: Library of modules shared by sifflet and its tests and its exporters.
simple-c-value library: A simple C value type
sized-types library and programs: Sized types in Haskell.
smt-lib library: Parsing and printing SMT-LIB.
SNet library: Declarative coördination language for streaming networks.
specialize-th library: Create specialized types from polymorphic ones using TH
Strafunski-Sdf2Haskell program: Converts SDF to Haskell
stylish-haskell library and program: Haskell code prettifier
sugarhaskell programs: Library-based syntactic extensibility for Haskell
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities
syntactic library: Generic abstract syntax, and utilities for embedded languages
syntax-trees library: Convert between different Haskell syntax trees.
template-haskell library
tempus program: Interpreter for the FRP language Tempus
termination-combinators library: Termination combinators for forcing non-terminating algorithms to terminate
text-register-machine library: A Haskell implementation of the 1# Text Register Machine
th-instances library: A place to collect orphan instances for Template Haskell
th-lift library: Derive Template Haskell's Lift class for datatypes.
thih library and program: Typing Haskell In Haskell
to-haskell library: A type class and some utilities for generating Haskell code.
transformations library: Generic representation of tree transformations
TTTAS library: Typed Transformations of Typed Abstract Syntax
type-settheory library: Sets and functions-as-relations in the type system
type-sub-th library: Substitute types for other types with Template Haskell
unbound library: Generic support for programming with names and binders
unification-fd library: Simple generic unification algorithms.
universe-th library: Construct a Dec's ancestor list.
urldisp-happstack library: Simple, declarative, expressive URL routing -- on happstack.
verilog library: A Verilog parser.
vhdl library: VHDL AST and pretty printer
web-routes library: Library for maintaining correctness and composability of URLs within an application.
web-routes-boomerang library: Library for maintaining correctness and composability of URLs within an application.
web-routes-happstack library: Adds support for using web-routes with Happstack
web-routes-hsp library: Adds XMLGenerator instance for RouteT monad
web-routes-regular library: Library for maintaining correctness of URLs within an application.
web-routes-th library: Support for deriving PathInfo using Template Haskell
web-routes-wai library: Library for maintaining correctness of URLs within an application.
WebBits-Html library: JavaScript analysis tools
WebBits-multiplate library: A Multiplate instance for JavaScript.
webidl library and programs: Parser and Pretty Printer for the Web IDL Language
while-lang-parser library: Parser for the While language.
Wired library: Wire-aware hardware description
words library: Cross-platform access to a list of words
XmlHtmlWriter library: A library for writing XML and HTML
zeroth library and program: ZeroTH - remove unnecessary TH dependencies
zot program: Zot language

Languages

Frank program: An experimental programming language with typed algebraic effects
simple-pascal library and program: Simplified Pascal language to SSVM compiler
simple-stacked-vm library and program: Simple stacked virtual machine: assembler, disassembler, bytecode interpreter

LaTeX

simplex program: A simple markup language that translates to LaTeX

Lenses

fclabels library: First class accessor labels.
lens library: Lenses, Folds and Traversals
lens-family library: Lens Families
lens-family-core library: Haskell 98 Lens Families
multiplate library: Lightweight generic library for mutually recursive data types.
putlenses library: Put-based lens library
tables library: In-memory storage with multiple keys using lenses and traversals

Linear Algebra

bed-and-breakfast library: Efficient Matrix operations in 100% Haskell.

List

data-ordlist library: Set and bag operations on ordered lists
lcs library: Find longest common sublist of two lists
list-extras library: Common not-so-common functions for lists
list-mux library: List Multiplexing
split library: Combinator library for splitting lists.
utility-ht library: Various small helper functions for Lists, Maybes, Tuples, Functions

Little Game

click-clack program: Toy game (tetris on billiard board). Hipmunk in action.

Local Search

local-search library: Generalised local search within Haskell, for applications in combinatorial optimisation.

Logging

greg-client library: A scalable distributed logger with a high-precision global time axis.
log2json library and program: Turn log file records into JSON.
raven-haskell library: Haskell client for Sentry logging service.
SessionLogger library: Easy Loggingframework
simple-log library: Simple log for Haskell
simple-log-syslog library: Syslog backend for simple-log
trifecta library: A modern parser combinator library with convenient diagnostics

Logic

AC-Boolean library: Handle Boolean values generatically.
cond library: Basic conditional and boolean operators with monadic variants.
ersatz library: A monad for expressing SAT or QSAT problems using observable sharing.
hatt library and program: A truth table generator for classical propositional logic.
logic-classes library and program: Framework for propositional and first order logic, theorem proving
obdd library: Ordered Reduced Binary Decision Diagrams
PropLogic library and program: Propositional Logic
satchmo library: SAT encoding monad
structural-induction library: Instantiate structural induction schemas for algebraic data types
term-rewriting library: Term Rewriting Library
unification-fd library: Simple generic unification algorithms.

Logic Programming

unique-logic library: Solve simple simultaneous equations
unique-logic-tf library: Solve simple simultaneous equations

Logstash

hslogstash library: A library to work with, or as, a logstash server

LUA

lua-bytecode library: Library for loading Lua bytecode.

Machine Learning

flat-mcmc library: Painless general-purpose sampling.
genetics program: A Genetic Algorithm library
HLearn-algebra library: Algebraic foundation for homomorphic learning
HLearn-classification library
HLearn-distributions library: Distributions for use with the HLearn library
HMM library: A hidden markov model library
hmm library: A hidden markov model library
perceptron library: The perceptron learning algorithm.

Machine Vision

CV library: OpenCV based machine vision library
simple-firewire library: Simplified interface for firewire cameras

Manatee

manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-browser library and program: Browser extension for Manatee.
manatee-core library: The core of Manatee.
manatee-curl library and program: Download Manager extension for Manatee.
manatee-editor library and program: Editor extension for Manatee.
manatee-filemanager library and program: File manager extension for Manatee.
manatee-imageviewer library and program: Image viewer extension for Manatee.
manatee-ircclient library and programs: IRC client extension for Manatee.
manatee-mplayer library and programs: Mplayer client extension for Manatee.
manatee-pdfviewer library and program: PDF viewer extension for Manatee.
manatee-processmanager library and program: Process manager extension for Manatee.
manatee-reader library and program: Feed reader extension for Manatee.
manatee-template library and program: Template code to create Manatee application.
manatee-terminal library and program: Terminal Emulator extension for Manatee.
manatee-welcome library and program: Welcome module to help user play Manatee quickly.

MapReduce

compressed library: Compressed containers and reducers

Math

AC-Angle library: Angles in degrees and radians.
AC-Boolean library: Handle Boolean values generatically.
AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Terminal library: Trivial wrapper over ansi-terminal.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
ad library: Automatic Differentiation
AERN-Basics library and program: foundational type classes for approximating exact real numbers
AERN-Net library: Compositional lazy dataflow networks for exact real number computation
AERN-Real library: arbitrary precision real interval arithmetic
AERN-Real-Double library and programs: arbitrary precision real interval arithmetic
AERN-Real-Interval library: arbitrary precision real interval arithmetic
AERN-RnToRm library: polynomial function enclosures (PFEs) approximating exact real functions
AERN-RnToRm-Plot library: GL plotting of polynomial function enclosures (PFEs)
algebra library: Constructive abstract algebra
algebraic-classes library: Conversions between algebraic classes and F-algebras.
antimirov library and program: Define the language containment (=subtyping) relation on regulare expressions.
arithmoi library: Efficient basic number-theoretic functions. Primes, powers, integer logarithms.
bayes-stack library: Framework for inferring generative probabilistic models with Gibbs sampling
bed-and-breakfast library: Efficient Matrix operations in 100% Haskell.
BerlekampAlgorithm library: Factorization of polynomials over finite field
besout library: Extended GCD of polynomials over F_p[x]
blas library: Bindings to the BLAS library
boolsimplifier library: Simplification tools for simple propositional formulas.
caldims library and program: Calculation tool and library supporting units
cash library: the Computer Algebra SHell
casui program: Equation Manipulator
cmath library: A binding to the standard C math library
combinat library: Generation of various combinatorial objects.
complex-generic library: complex numbers with non-mandatory RealFloat
complex-integrate library: A simple integration function to integrate a complex-valued complex functions
computational-algebra library: Well-kinded computational algebra library, currently supporting Groebner basis.
conjugateGradient library: Sparse matrix linear-equation solver
constructive-algebra library: A library of constructive algebra.
continued-fractions library: Continued fractions.
converge library: Limit operations for converging sequences
crf-chain1 library: First-order, linear-chain conditional random fields
crf-chain1-constrained library: First-order, constrained, linear-chain conditional random fields
crf-chain2-generic library: Second-order, generic, constrained, linear conditional random fields
cubicspline library: Natural cubic spline interpolation.
cyclotomic library: A subfield of the complex numbers for exact calculation.
data-category library: Category theory
data-interval library: Interval arithmetic for both open and closed intervals
data-nat library: data Nat = Zero | Succ Nat
Decimal library: Decimal numbers with variable precision
derivation-trees library: Typeset Derivation Trees via MetaPost
digamma library: A robust implementation of the digamma function
dimensional library: Statically checked physical dimensions.
dimensional-tf library: Statically checked physical dimensions, implemented using type families.
DistanceTransform library: Distance transform function.
DP library: Pragmatic framework for dynamic programming
dvda library: Efficient automatic differentiation and code generation
easyplot library: A tiny plotting library, utilizes gnuplot for plotting.
Eq program: Render math formula in ASCII, and perform some simplifications
equational-reasoning library: Proof assistant for Haskell using DataKinds & PolyKinds
erf library: The error function, erf, and related functions.
erf-native library: Native Haskell implementation of the interface from the erf package
exact-combinatorics library: Efficient exact computation of combinatoric functions.
factory library and program: Rational arithmetic in an irrational world.
fad library: Forward Automatic Differentiation.
fast-math library: Non IEEE-754 compliant compile-time floating-point optimisations
fft library and program: Bindings to the FFTW library.
finite-field library: Finite Fields
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
fixed-precision library: Fixed Precision Arithmetic
fixedprec library: A fixed-precision real number type
free-functors library: Provides free functors that are adjoint to functors that forget class constraints.
function-instances-algebra library: Instances of the Algebra.* classes for functions
game-probability library: Simple probability library for dice rolls, card games and similar
gamma library: Gamma function and related functions.
GaussQuadIntegration library: Non-adaptive Gaussian quadrature for numeric integraton
geocalc library: Libary for calculating distances between two coordinates in WSG84
GeomPredicates library: Geometric predicates
GeomPredicates-SSE library: Geometric predicates (Intel SSE)
glpk-hs library: Comprehensive GLPK linear programming bindings
gnuplot library and program: 2D and 3D plots using gnuplot
gray-extended library: Gray encoding schemes
grid library: Tools for working with regular grids (graphs, lattices).
groups library: Haskell 98 groups
gsl-random library: Bindings the the GSL random number generation facilities.
gsl-random-fu library: Instances for using gsl-random with random-fu
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
hascal library and program: A minimalistic but extensible and precise calculator
HaskellForMaths library: Combinatorics, group theory, commutative algebra, non-commutative algebra
HaskellLM library: Pure Haskell implementation of the Levenberg-Marquardt algorithm
hbayes library: Bayesian Networks
hcg-minus library: haskell cg (minus)
hcg-minus-cairo library: haskell cg (minus) (cairo rendering)
HERA library
hgeometric library: A geometric library with bindings to GPC.
hieraclus library: Automated clustering of arbitrary elements in Haskell.
hirt program: Calculates IRT 2PL and 3PL models
hlbfgsb library: Haskell binding to L-BFGS-B version 3.0
hmatrix library: Linear algebra and numerical computation
hmatrix-glpk library: Linear Programming based on GLPK
hmatrix-gsl-stats library: GSL Statistics interface
hmatrix-mmap library: Memory map Vector from disk into memory efficiently
hmatrix-nipals library and program: NIPALS method for Principal Components Analysis on large data-sets.
hmatrix-quadprogpp library: Bindings to the QuadProg++ quadratic programming library
hmatrix-repa library: Adaptors for interoperability between hmatrix and repa
hmatrix-special library: Interface to GSL special functions
hmatrix-static library: hmatrix with vector and matrix sizes encoded in types
hmatrix-svdlibc library and program: SVDLIBC bindings for HMatrix
hmatrix-syntax library: MATLAB-like syntax for hmatrix vectors and matrices
hmatrix-tests library: Tests for hmatrix
hmpfr library: Haskell binding to the MPFR library
homeomorphic library: Homeomorphic Embedding Test
Homology library: Compute the homology of a chain complex
hps-kmeans library: A nice implementation of the k-Means algorithm.
hR library: R bindings and interface
HsASA library: A haskell interface to Lester Ingber's adaptive simulating annealing code
hsignal library: Signal processing and EEG data analysis
hstatistics library: Statistics
hstats library: Statistical Computing in Haskell
hTensor library: Multidimensional arrays and simple tensor computations.
ieee754 library: Utilities for dealing with IEEE floating point numbers
intervals library: Interval Arithmetic
iter-stats library: iteratees for statistical processing
jalla library: Higher level functions for linear algebra. Wraps BLAS and LAPACKE.
kmeans-vector library: An implementation of the kmeans clustering algorithm based on the vector package
ks-test library: Kolmogorov distribution and Kolmogorov-Smirnov test.
l-bfgs-b library: Bindings to L-BFGS-B, ...
lagrangian library: Solve Lagrange multiplier problems
Lattices library: A library for lattices
lattices library: Fine-grained library for constructing and manipulating lattices
lazysplines library: Differential solving with lazy splines
levmar library: An implementation of the Levenberg-Marquardt algorithm
lin-alg library: Low-dimensional matrices and vectors for graphics and physics
linda library: LINear Discriminant Analysis
linear library: Linear Algebra
linear-algebra-cblas library and program: A linear algebra library with bindings to BLAS and LAPACK
linearEqSolver library: Use SMT solvers to solve linear systems over integers and rationals
logfloat library: Log-domain floating point numbers
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
magma library: magma is an algebraic structure consisting a set together with an binary operation.
math-functions library: Special functions and Chebyshev polynomials
matlab library: Matlab bindings and interface
matrix library: A native implementation of matrix operations.
matrix-market library: Read and write NIST Matrix Market files
matrix-market-pure library: Pure and composable reader and writer of the Matrix Market format.
maxent library: Compute Maximum Entropy Distributions
MeanShift library: Mean shift algorithm
mersenne-random library: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister
mersenne-random-pure64 library: Generate high quality pseudorandom numbers purely using a Mersenne Twister
miniball library: Bindings to Miniball, a smallest enclosing ball library
mixed-strategies library and program: Find optimal mixed strategies for two-player games
modular-arithmetic library: A type for integers modulo some constant.
Modulo library: Modular arithmetic via Numeric-Prelude
monad-lrs library: a monad to calculate linear recursive sequence
Monocle library: Symbolic computations in strict monoidal categories with LaTeX output.
monoidplus library: Extra classes/functions about monoids
monte-carlo library: A monad and transformer for Monte Carlo calculations.
multiset-comb library: Combinatorial algorithms over multisets
mwc-random library: Fast, high quality pseudo random number generation
mwc-random-monad library: Monadic interface for mwc-random
nat library: Lazy binary natural numbers
natural-numbers library: Natural numbers
network-topic-models programs: A few network topic model implementations for bayes-stack
nimber library: An implementation of (finite) nimbers
Noise library: A Haskell coherent noise generator based on libnoise
non-negative library and program: Non-negative numbers
nonlinear-optimization library: Various iterative algorithms for optimization of nonlinear functions.
normaldistribution library: Minimum fuss normally distributed random values.
np-extras library: NumericPrelude extras
numbers library: Various number types
NumberSieves library: Number Theoretic Sieves: primes, factorization, and Euler's Totient
numeric-extras library: Useful tools from the C standard library
numeric-prelude library and programs: An experimental alternative hierarchy of numeric type classes
numeric-quest library: Math and quantum mechanics
numeric-tools library: Collection of numerical tools for integration, differentiation etc.
numtype library: Type-level (low cardinality) integers.
numtype-tf library: Type-level (low cardinality) integers, implemented using type families.
oeis library: Interface to the Online Encyclopedia of Integer Sequences
Operads library: Groebner basis computation for Operads.
Ordinals library: Ordinal arithmetic
permutation library: A library for permutations and combinations.
poker-eval library: Binding to libpoker-eval
polar library: Complex numbers in polar form
polynomial library: Polynomials
polynomials-bernstein library: A solver for systems of polynomial equations in bernstein form
probability library: Probabilistic Functional Programming
ProxN library: Proximity sets in N dimensions
pure-fft library: Fast Fourier Transform
qd library: double-double and quad-double number type via libqd
qd-vec library: 'Vec' instances for 'qd' types
rad library: Reverse Automatic Differentiation.
random-extras library: Additional functions for random values.
random-fu library: Random number generation
random-source library: Generic basis for random number generators
range-space library: A Range type with vector-space instances
RANSAC library: The RANSAC algorithm for parameter estimation.
rclient library: Haskell client for Rserve
reducers library: Semigroups, specialized containers and a general map/reduce framework
rivers library: Rivers are like Streams, but different.
roots library: Root-finding algorithms (1-dimensional)
rounding library: Explicit floating point rounding mode wrappers
rsagl-math library: The RogueStar Animation and Graphics Library: Mathematics
ruff library: relatively useful fractal functions
rvar library: Random Variables
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
sde-solver library: Distributed SDE solver
semigroups library: Haskell 98 semigroups
semigroups-actions library: Semigroups actions
semiring program: Semirings, ring-like structures used for dynamic programming applications
SG library: Small geometry library for dealing with vectors and collision detection
sgd library: Stochastic gradient descent
simple-vec3 library: Three-dimensional vectors of doubles with basic operations
sloane program: A command line interface to Sloane's On-Line Encyclopedia of Integer Sequences
som library: Self-Organising Maps
sparse-lin-alg library: Effective linear algebra on sparse matrices
spatial-math library: 3d math including quaternions/euler angles/dcms and utility functions
species library: Computational combinatorial species
splines library: B-Splines, other splines, and NURBS.
stable-maps library: Heterogeneous maps keyed by StableNames
statistics library: A library of statistical types, data, and functions
statistics-dirichlet library: Functions for working with Dirichlet densities and mixtures on vectors.
statistics-linreg library: Linear regression between two samples, based on the 'statistics' package.
sym library: Permutations, patterns, and statistics
sym-plot library: Plot permutations; an addition to the sym package
tau library: Tau, the ratio between any circle's circumference and radius.
tensor library: A completely type-safe library for linear algebra
theta-functions library: Theta-functions implemented as trigonometric series
tilings library: substitution tilings
type-natural library: Type-level natural and proofs of their properties.
type-settheory library: Sets and functions-as-relations in the type system
unittyped library: An extendable library for type-safe computations including units.
variable-precision library: variable-precision floating point
Vec library: Fixed-length lists and low-dimensional linear algebra.
Vec-Boolean library: Provides Boolean instances for the Vec package
Vec-OpenGLRaw library: Instances and functions to interoperate Vec and OpenGL.
Vec-Transform library: This package is obsolete
vect library: A low-dimensional linear algebra library, tailored to computer graphics.
vect-opengl library: OpenGL support for the `vect' low-dimensional linear algebra library.
vector-fftw library: A binding to the fftw library for one-dimensional vectors.
vector-space library: Vector & affine spaces, linear maps, and derivatives
vector-space-map library: vector-space operations for finite maps using Data.Map
vector-space-opengl library: Instances of vector-space classes for OpenGL types
vector-space-points library: A type for points, as distinct from vectors.
vowpal-utils library: Vowpal Wabbit utilities
xorshift library: Haskell implementation of the xorshift random generator.
yices library: Haskell programming interface to Yices SMT solver
yices-easy library: Simple interface to the Yices SMT (SAT modulo theories) solver.
yices-painless library: An embedded language for programming the Yices SMT solver
z3 library: Bindings for the Z3 Theorem Prover

Mathematics

ordered library: A definition of Posets.

Maths

planar-graph library: A representation of planar graphs

Media

ffmpeg-tutorials programs: Tutorials on ffmpeg usage to play video/audio
gstreamer library: Binding to the GStreamer open source multimedia framework.
hoovie program: Haskell Media Server
hs-ffmpeg library: Bindings to FFMPEG library
temporal-media library: data types for temporal media
xine library: Bindings to xine-lib

Message-Oriented Middleware

patterns library: Common patterns in message-oriented applications
stomp-queue library: Stompl Client Library
stompl library: Stomp Parser and Utilities

Metrics

network-metrics library: Send metrics to Ganglia, Graphite, and statsd.

Middleware

Hermes library: Message-based middleware layer
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.

Minecraft

mcpi library and programs: Connect to MineCraft running on a Raspberry PI.

Monad

cond library: Basic conditional and boolean operators with monadic variants.
exception-monads-tf library: Exception monad transformer instances for monads-tf classes.
exception-mtl library: Exception monad transformer instances for mtl2 classes.
exception-transformers library: Type classes and monads for unchecked extensible exceptions.
exceptions library: Extensible optionally-pure exceptions
indexed-free library: indexed monads for free
monad-memo library: Memoization monad transformer
set-monad library: Set monad
views library: Views allow you to run a State monad on part of a state.

Monadic Regions

IOR library: Region based resource management for the IO monad.
monad-stlike-io library: ST-like monad capturing variables to regions and supporting IO.
monad-stlike-stm library: ST-like monad capturing variables to regions and supporting STM.
regional-pointers library: Regional memory pointers
regions library: Provides the region monad for safely opening and working with scarce resources.
regions-monadstf library: Monads-tf instances for the RegionT monad transformer
regions-mtl library: mtl instances for the RegionT monad transformer
safer-file-handles library: Type-safe file handling
safer-file-handles-bytestring library: Extends safer-file-handles with ByteString operations
safer-file-handles-text library: Extends safer-file-handles with Text operations
usb-safe library: Type-safe communication with USB devices.

Monads

abstract-par library: Type classes generalizing the functionality of the 'monad-par' library.
backward-state library: A state monad that runs the state in reverse through the computation
category-extras library: A meta-package documenting various packages inspired by category theory
compose-trans library: Composable monad transformers
Consumer library: A monad and monad transformer for consuming streams
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-free library: Free monads and monad transformers
contstuff library: Fast, easy to use CPS-based monad transformers
data-accessor-monadLib library: Accessor functions for monadLib's monads
database-study library: Demonstrate how a database can be implemented the functional way
effects library: Computational Effects
either library: An either monad transformer
explicit-sharing library: Explicit Sharing of Monadic Effects
failure library: A simple type class for success/failure computations.
free library: Monads for free
free-game library: Create graphical applications for free
hdph library and programs: Haskell distributed parallel Haskell
hofix-mtl library: defining @mtl@-ready monads as * -> * fixed-points
infinite-search library: Exhaustively searchable infinite sets.
interleavableGen program: Generates a version of a module using InterleavableIO
interleavableIO library: Use other Monads in functions that asks for an IO Monad.
kan-extensions library: Kan extensions, the Yoneda lemma, and (co)density (co)monads
lazyio library and program: Run IO actions lazily while respecting their order
level-monad library: Non-Determinism Monad for Level-Wise Search
meta-par library: Provides the monad-par interface, but based on modular scheduler "mix-ins".
monad-coroutine library: Coroutine monad transformer for suspending and resuming monadic computations
monad-interleave library: Monads with an unsaveInterleaveIO-like operation.
monad-par library: A library for parallel programming based on a monad
monad-par-extras library: Combinators and extra features for Par monads
monad-parallel library: Parallel execution of monadic computations
monad-products library: Haskell 98 monad products
monad-ran library: Fast monads and monad transformers
monad-st library: Provides a MonadST class
monad-state library: Utility library for monads, particularly those involving state
monad-stlike-io library: ST-like monad capturing variables to regions and supporting IO.
monad-stlike-stm library: ST-like monad capturing variables to regions and supporting STM.
monad-supply library: Stateful supply monad.
monad-tx library: A transactional state monad.
MonadLab library and program: Automatically generate layered monads
monadLib library: A collection of monad transformers.
monadLib-compose library: Arrow-like monad composition for monadLib.
monadloc library: A class for monads which can keep a monadic call trace
monadloc-pp program: A preprocessor for generating monadic call traces
mstate library: MState: A consistent State monad for concurrent applications.
operational library and program: Implementation of difficult monads made easy with operational semantics.
probability library: Probabilistic Functional Programming
representable-functors library: Representable functors
representable-tries library: Tries from representations of polynomial functors
resumable-exceptions library: A monad transformer for resumable exceptions
stateful-mtl library: Typeclass instances for monad transformer stacks with an ST thread at the bottom.
statethread library: The ST monad and STRefs
STMonadTrans library: A monad transformer version of the ST monad
stream-monad library and program: Simple, Fair and Terminating Backtracking Monad
transformers-compose library: Arrow-like / category-like composition for transformers.
tree-monad library: Non-Determinism Monad for Tree Search
TreeT library: Transformer for Data.Tree
wl-pprint-extras library: A free monad based on the Wadler/Leijen pretty printer
wl-pprint-terminfo library: A color pretty printer with terminfo support
ZFS library: Oleg's Zipper FS

Monitoring

network-metrics library: Send metrics to Ganglia, Graphite, and statsd.

Multimedia

manatee-mplayer library and programs: Mplayer client extension for Manatee.

Multimedia Player

manatee-mplayer library and programs: Mplayer client extension for Manatee.

Music

alsa-core library: Binding to the ALSA Library API (Exceptions).
alsa-gui programs: Some simple interactive programs for sending MIDI control messages via ALSA
alsa-pcm library and programs: Binding to the ALSA Library API (PCM audio).
alsa-seq library and programs: Binding to the ALSA Library API (MIDI sequencer).
billboard-parser library and program: A parser for the Billboard chord dataset
conductive-base library: a library for live coding and real-time musical applications
conductive-clock library: a library for displaying musical time in a terminal-based clock
conductive-hsc3 library: a library with examples of using Conductive with hsc3
conductive-song library: a library of functions which are useful for composing music
csound-expression library: library to make electronic music
gulcii program: graphical untyped lambda calculus interactive interpreter
hamusic library and programs: Library to handle abstract music
HarmTrace library and program: Harmony Analysis and Retrieval of Music
HarmTrace-Base library: Parsing and unambiguously representing musical chords.
haskore library and programs: The Haskore Computer Music System
haskore-realtime library: Routines for realtime playback of Haskore songs
haskore-supercollider library and programs: Haskore back-end for SuperCollider
haskore-synthesizer library and program: Music rendering coded in Haskell
haskore-vintage library: The February 2000 version of Haskore.
hCsound library: interface to CSound API
hemkay program: A module music mixer and player
hemkay-core library: A device independent module music mixer
hly library: Haskell LilyPond
hmt library: Haskell Music Theory
hmt-diagrams library: Haskell Music Theory Diagrams
hts library: Haskell Music Typesetting
live-sequencer library and programs: Live coding of MIDI music
loris library: interface to Loris API
midi library and program: Handling of MIDI messages and files
midi-alsa library: Convert between datatypes of the midi and the alsa packages
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
music-articulation library: Abstract representation of musical articulation.
music-diatonic library: Implementation of basic western musical theory objects.
music-dynamics library: Abstract representation of musical dynamics.
music-dynamics-literal library: Overloaded dynamics literals.
music-parts library: To be written.
music-pitch library: Abstract representation of musical pitch.
music-pitch-literal library: Overloaded pitch literals.
music-preludes library: Some useful preludes for the Music Suite.
music-score library and program: Musical score and part representation.
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
musicxml2 library: A representation of the MusicXML format.
reactive-balsa library: Programmatically edit MIDI events via ALSA and reactive-banana
streamed library: Programmatically edit MIDI event streams via ALSA
synthesizer-alsa library and programs: Control synthesizer effects via ALSA/MIDI
synthesizer-llvm library and programs: Efficient signal processing using runtime compilation
synthesizer-midi library and programs: Render audio signals from MIDI files or realtime messages
temporal-csound library: brings together temporal-music-notation and csound-expression packages
temporal-media library: data types for temporal media
temporal-music-notation library: music notation
temporal-music-notation-demo library: generates midi from score notation.
temporal-music-notation-western library: western music notation
x-dsp library: A embedded DSL for manipulating DSP languages in Haskell
YampaSynth programs: Software synthesizer
zmidi-core library: Read and write MIDI files.

MusicBrainz

musicbrainz-email library and programs: Send an email to all MusicBrainz editors

Natural Language Processing

adict library: Approximate dictionary searching
alpino-tools library and programs: Alpino data manipulation tools
antfarm library and program: Referring expressions for definitions
brillig library and program: Simple part of speech tagger
colada library and program: Colada implements incremental word class class induction using online LDA
concraft library and program: Morphological disambiguation based on constrained CRFs
concraft-pl library and program: Morphological tagger for Polish
crf-chain2-tiers library: Second-order, tiered, constrained, linear conditional random fields
data-named library: Data types for named entities
delta-h library and program: Online entropy-based model of lexical category acquisition.
detrospector program: Markov chain text generator
DP library: Pragmatic framework for dynamic programming
estimators library: Tool for managing probability estimation
FM-SBLEX programs: A set of computational morphology tools for Swedish diachronic lexicons.
fullstop library and program: Simple sentence segmenter
GenI library and program: A natural language generator (specifically, an FB-LTAG surface realiser)
geni-gui library and program: GenI graphical user interface
geniconvert program: Conversion utility for the GenI generator
gf library and program: Grammatical Framework
hist-pl library and program: Umbrella package for the historical dictionary of Polish
hist-pl-dawg library: A generic, DAWG-based dictionary
hist-pl-fusion library: Merging historical dictionary with PoliMorf
hist-pl-lexicon library: A binary representation of the historical dictionary of Polish
hist-pl-lmf library: LMF parsing for the historical dictionary of Polish
hist-pl-transliter library: A simple EDSL for transliteration rules
hist-pl-types library: Types in the historical dictionary of Polish
hs-gizapp library: Haskell wrapper around the GIZA++ toolkit.
language-spelling library: Various tools to detect/correct mistakes in words
lda library: Online Latent Dirichlet Allocation
logfloat library: Log-domain floating point numbers
mecab library: A Haskell binding to MeCab
minimorph library: English spelling functions with an emphasis on simplicity.
miniutter library: Simple English clause creation from arbitrary words.
monad-ox library: Monad for observation extraction
morfette program: A tool for supervised learning of morphology
morfeusz library: Bindings to the morphological analyser Morfeusz
nerf library and program: Nerf, the named entity recognition tool based on linear-chain CRFs
NGrams program: Simple application for calculating n-grams using Google.
nkjp library and programs: Manipulating the National Corpus of Polish (NKJP)
nlp-scores library: Scoring functions commonly used for evaluation in NLP and IR
numerals library: Convert numbers to number words
numerals-base library: Convert numbers to number words
penn-treebank library: Tools for manipulating the Penn TreeBank
phonetic-code library: Phonetic codes: Soundex and Phonix
polh-lexicon library and programs: A library for manipulating the historical dictionary of Polish (deprecated)
polimorf library: Working with the PoliMorf dictionary
PTQ programs: An implementation of Montague's PTQ.
semiring program: Semirings, ring-like structures used for dynamic programming applications
sequor programs: A sequence labeler based on Collins's sequence perceptron.
snowball library: Bindings to the Snowball library.
stemmer library: Haskell bindings to the Snowball stemming library.
swift-lda library: Online sampler for Latent Dirichlet Allocation
tagset-positional library: Positional tags and tagsets
tokenize library: Simple tokenizer for English text.
toktok library and programs
WordNet library: Haskell interface to the WordNet database
WordNet-ghc74 library: Haskell interface to the WordNet database

Network

adhoc-network library: Ad-hoc P2P network protocol
AGI library: A library for writing AGI scripts for Asterisk
AMI library: Low-level bindings for Asterisk Manager Interface (AMI).
amqp library: Client library for AMQP servers (currently only RabbitMQ)
apelsin program: Server and community browser for the game Tremulous
ApplePush library and program: Library for Apple Push Notification Service
archiver library and program: Archive supplied URLs in WebCite & Internet Archive
avahi library: Minimal DBus bindings for Avahi daemon (http://avahi.org)
aws library and programs: Amazon Web Services (AWS) for Haskell
azure-service-api library: Haskell bindings for the Microsoft Azure Service Management API
Barracuda library and program: An ad-hoc P2P chat program
binary-protocol-zmq library and program: Monad to ease implementing a binary network protocol over ZeroMQ
c10k library: C10k server library using prefork
ccnx library: A Haskell implementation of the CCNx network protocol.
cgi library: A library for writing CGI programs
cgi-undecidable library: Undecidable instances for the cgi package.
check-email library: Confirm whether an email is valid and probably existant.
Combinatorrent program: A concurrent bittorrent client
commsec-keyexchange library: Key agreement for commsec.
conduit-network-stream library: A base layer for network protocols using Conduits
conjure library and program: A BitTorrent client
connection library: Simple and easy network connections API
cr program: Code review tool
curl library: Haskell binding to libcurl
curl-aeson library: Communicate with HTTP service using JSON
curlhs library: bindings to libcurl, the multiprotocol file transfer library
daemons library and programs: Daemons in Haskell made fun and easy
dbus library: A client library for the D-Bus IPC system.
dbus-qq library: Quasi-quoter for DBus functions
dbus-th library: TemplateHaskell generator of DBus bindings
dgs library: Haskell front-end for DGS' bot interface
direct-fastcgi library: Native implementation of the FastCGI protocol.
direct-http library: Native webserver that acts as a library.
distributed-process-p2p library and program: Peer-to-peer node discovery for Cloud Haskell
dns library: DNS library in Haskell
dnscache library and program: Caching DNS resolver library and mass DNS resolver utility
dnsrbl library: Asynchronous DNS RBL lookup
domain-auth library: Domain authentication library
download library: High-level file download based on URLs
download-curl library: High-level file download based on URLs
ekg library: Remote monitoring of processes
email library: Sending eMail in Haskell made easy
epass library: Baisc, Erlang-like message passing supporting sockets.
Etherbunny library and program: A network analysis toolkit for Haskell
EventSocket library: Interfaces with FreeSwitch Event Socket.
fastcgi library: A Haskell library for writing FastCGI programs
fastirc library: Fast Internet Relay Chat (IRC) library
fluent-logger library: A structured logger for Fluentd (Haskell)
fluent-logger-conduit library: Conduit interface for fluent-logger
ftp-conduit library: FTP client package with conduit interface based off http-conduit
ftphs library and program: FTP Client and Server Library
FTPLine program: A command-line FTP client.
full-sessions library: a monad for protocol-typed network programming
futun program: Simple IP-over-UDP tunnel using TUNTAP
generic-server library: Simple generic TCP/IP server
GeoIp library: Pure bindings for the MaxMind IP database.
ginsu program: Ginsu Gale Client
gitit library and programs: Wiki using happstack, git or darcs, and pandoc.
gnutls library: Bindings for GNU libgnutls
GoogleDirections library: Haskell Interface to Google Directions API
gopherbot program: Spidering robot to download files from Gopherspace
GrowlNotify library and program: Notification utility for Growl.
gsasl library: Bindings for GNU libgsasl
gtkrsync programs: Gnome rsync progress display
Hach library and programs: Simple chat
HackMail library and program: A Procmail Replacement as Haskell EDSL
handa-gdata library and program: Library and command-line utility for accessing Google services and APIs.
hascat program: Hascat Web Server
hascat-lib library: Hascat Package
hascat-setup library and program: Hascat Installation helper
hascat-system library: Hascat System Package
haskell-aliyun library: haskell client of aliyun service.
haskell-ftp library and program: A Haskell ftp server with configurable backend.
haskell-modbus library: A haskell implementation of the Modbus protocol
haskell-openflow library: OpenFlow protocol in Haskell
haskell-xmpp library and program: Haskell XMPP (eXtensible Message Passing Protocol, a.k.a. Jabber) library
HaskellNet library: Client support for POP3, SMTP, and IMAP
HaskellTorrent program: A concurrent bittorrent client
haskheap library: Haskell bindings to refheap.
haxr library: XML-RPC client and server library.
haxr-th library: Automatic deriving of XML-RPC structs for Haskell records.
hbeanstalk library: Client for the beanstalkd workqueue service.
hellage programs: Distributed hackage mirror
hellnet library and programs: Simple, distributed, anonymous data sharing network.
Hermes library: Message-based middleware layer
HGamer3D-Enet-Binding library: Windows Game Engine for the Haskell Programmer - Enet Bindings
hGelf library: Haskell GELF library
hgithub library and program: Haskell bindings to the GitHub API
hichi programs: haskell robot for IChat protocol
hircules program: IRC client
hMollom library: Library to interact with the @Mollom anti-spam service
HNM library and program: Happy Network Manager
hoauth library: A Haskell implementation of OAuth 1.0a protocol.
hoauth2 library: hoauth2
hog program: Simple IRC logger bot.
Holumbus-Distribution library and programs: intra- and inter-program communication
hostname library: A very simple package providing a cross-platform means of determining the hostname
hosts-server program: An dns server which is extremely easy to config.
hpodder program: Podcast Aggregator (downloader)
hs-json-rpc library: JSON-RPC client library
hs-twitterarchiver program: Commandline Twitter feed archiver
hS3 library and program: Interface to Amazon's Simple Storage Service (S3)
hscd library and program: Command line client and library for SoundCloud.com
hsdns library: Asynchronous DNS Resolver
hsdns-cache library: Caching asynchronous DNS resolver.
hsgnutls library: Library wrapping the GnuTLS API.
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsini library: Package for user configuration files (INI)
hsmtpclient library: Simple SMTP Client
hsns program: a miniature network sniffer
hsp-cgi library: Facilitates running Haskell Server Pages web pages as CGI programs.
hspr-sh library: Session handler for HSP
hspread library: A client library for the spread toolkit
hszephyr library: Simple libzephyr bindings
HTTP library: A library for client-side HTTP
http-attoparsec library: Attoparsec parsers for http-types.
http-client-auth library: HTTP authorization (both basic and digest) done right
http-date library: HTTP Date parser/formatter
http-monad library and program: Monad abstraction for HTTP allowing lazy transfer and non-I/O simulation
http-server library: A library for writing Haskell web servers.
http-types library: Generic HTTP types for Haskell (for both client and server code).
http-wget library: ...
httpd-shed library and program: A simple web-server with an interact style API
hulk programs: IRC daemon.
hums program: Haskell UPnP Media Server
hxmppc program: Haskell XMPP (Jabber Client) Command Line Interface (CLI)
hyena library: Simple web application server
ihttp library and program: Incremental HTTP iteratee
imagepaste program: Command-line image paste utility
imapget program: Downloads email from imap SSL servers.
io-streams library: Simple, composable, and easy-to-use stream I/O
ip6addr programs: Command-line tools to deal with IPv6 Addresses text representation
iproute library: IP Routing Table
IPv6Addr library: Library to deal with IPv6 address text representations.
irc library: A small library for parsing IRC messages.
irc-bytestring library: serialization and parsing of IRC messages
ircbot library: A library for writing irc bots
ircbouncer program: IRC bouncer
ismtp library: Advanced ESMTP library
iterio-server library: Library for building servers with IterIO
iyql program: CLI (command line interface) to YQL
jmacro-rpc library: JSON-RPC clients and servers using JMacro, and evented client-server FRP.
jmacro-rpc-happstack library: Happstack backend for jmacro-rpc
jmacro-rpc-snap library: Snap backend for jmacro-rpc
krpc library and programs: KRPC remote procedure call protocol implementation.
lambda-bridge library and program: A bridge from Haskell (on a CPU) to VHDL on a FPGA.
LDAP library and program: Haskell binding for C LDAP API
libmpd library: An MPD client library.
libssh2 library and program: FFI bindings to libssh2 SSH2 client library (http://libssh2.org/)
libssh2-conduit library: Conduit wrappers for libssh2 FFI bindings (see libssh2 package).
local-address library: Functions to get local interface address
Lucu library and program: HTTP Daemonic Library
majordomo library and programs: Majordomo protocol for ZeroMQ
manatee-browser library and program: Browser extension for Manatee.
manatee-curl library and program: Download Manager extension for Manatee.
manatee-terminal library and program: Terminal Emulator extension for Manatee.
matsuri program: ncurses XMPP client
mcpi library and programs: Connect to MineCraft running on a Raspberry PI.
memcached library: haskell bindings for memcached
Mhailist programs: Haskell mailing list manager
mighttpd programs: Simple Web Server in Haskell
mighttpd2 programs: High performance web server on WAI/warp
minions program: A fast parallel ssh tool
montage library: Riak Resolution Proxy
montage-client library: Riak Resolution Proxy Client
msgpack-rpc library: A MessagePack-RPC Implementation
MusicBrainz library: interface to MusicBrainz XML2 web service
mvclient library: Client library for metaverse systems like Second Life
mybitcoin-sci library: Binding to mybitcoin.com's Shopping Cart Interface.
net-concurrent library: Concurrent over the network execution library
netclock library: Netclock protocol
netcore library: The NetCore compiler and runtime system for OpenFlow networks.
netlines library and program: Enumerator tools for text-based network protocols
NetSNMP library: Bindings for net-snmp's C API for clients
netspec library: Simplify static Networking tasks
netstring-enumerator library: Enumerator-based netstring parsing
nettle-frp library: FRP for controlling networks of OpenFlow switches.
nettle-netkit library: DSL for describing OpenFlow networks, and a compiler generating NetKit labs.
nettle-openflow library: OpenFlow protocol messages, binary formats, and servers.
network library: Low-level networking interface
network-address library and program: IP data structures and textual representation
network-bitcoin library: An interface to bitcoind.
network-conduit library: Stream socket data using conduits.
network-conduit-tls library: Create TLS-aware network code with conduits
network-data library: Library for network data structures and their serialization.
network-dbus library: D-Bus
network-fancy library: Networking support with a cleaner API
network-house library: data and parsers for Ethernet, TCP, UDP, IPv4, IPv6, ICMP, DHCP, TFTP
network-info library: Access the local computer's basic network configuration
network-interfacerequest library: Haskell bindings for the ifreq structure
network-ip library: Internet Protocol data structures
network-multicast library: Simple multicast library
network-netpacket library: Haskell bindings for low-level packet sockets (AF_PACKET)
Network-NineP library and program: High-level abstraction over 9P protocol
network-protocol-xmpp library: Client library for the XMPP protocol.
network-server library and program: A light abstraction over sockets & co. for servers
network-simple library: Simple network sockets usage patterns.
network-simple-tls library: Simple interface to TLS secured network sockets.
network-socket-options library: Type-safe, portable alternative to getSocketOption/setSocketOption
network-transport library: Network abstraction layer
network-transport-tcp library: TCP instantiation of Network.Transport
network-transport-tests library: Unit tests for Network.Transport implementations
network-websocket library and program: WebSocket library
nntp library: Library to connect to an NNTP Server
openid library and program: An implementation of the OpenID-2.0 spec.
openssl-streams library: OpenSSL network support for io-streams.
orchid library: Haskell Wiki Library
orchid-demo program: Haskell Wiki Demo
osm-download library: Download Open Street Map tiles
patterns library: Common patterns in message-oriented applications
paypal-api library: PayPal API, currently supporting "ButtonManager"
pb program: pastebin command line application
pcap library: A system-independent interface for user-level packet capture
pcap-conduit library: Conduit <-> libpcap
pcap-enumerator library: Convert a pcap into an enumerator.
pipes-network library: Use network sockets together with the pipes library.
pipes-network-tls library: TLS-secured network connections support for pipes.
pontarius-xmpp library: An incomplete implementation of RFC 6120 (XMPP: Core)
pop3-client library: POP3 Client Library
PortFusion program: high-performance distributed reverse / forward proxy & tunneling for TCP
postmaster program: Postmaster ESMTP Server
publicsuffixlist library: Is a given string a domain suffix?
publicsuffixlistcreate library: Create the publicsuffixlist package
Ranka program: HTTP to XMPP omegle chats gate.
rclient library: Haskell client for Rserve
rdioh library and programs: A Haskell wrapper for Rdio's API.
recaptcha library: Functions for using the reCAPTCHA service in web applications.
resource-pool library: A high-performance striped resource pooling implementation
resource-pool-catchio library: Fork of resource-pool, with a MonadCatchIO constraint
riak library: A Haskell client for the Riak decentralized data store
riak-protobuf library: Haskell types for the Riak protocol buffer API
rpc library: type safe rpcs provided as basic IO actions
rpc-framework library and program: a remote procedure call framework
rpf program: Receiver Policy Framework
rws program: Packet Generation
salvia library: Modular web application framework.
salvia-demo library and programs: Demo Salvia servers.
salvia-extras library: Collection of non-fundamental handlers for the Salvia web server.
salvia-protocol library: Salvia webserver protocol suite supporting URI, HTTP, Cookie and MIME.
salvia-sessions library: Session support for the Salvia webserver.
salvia-websocket library: Websocket implementation for the Salvia Webserver.
scalable-server library: Library for writing fast/scalable TCP-based services
scrobble library and program: Scrobbling server.
Scurry program: A cross platform P2P VPN application built using Haskell.
secure-sockets library: Secure point-to-point connectivity library
sendfile library: A portable sendfile library
sentry library and programs: Process monitoring tool written and configured in Haskell
shoap library: A very basic SOAP package
simple-sendfile library: Cross platform library for the sendfile system call
simple-server library: Simple Server interface
simpleirc library: Simple IRC Library
simplesmtpclient library: Very simple SMTP Client
smtp-mail library: Simple email sending via SMTP
smtp2mta program: Listen for SMTP traffic and send it to an MTA script
SMTPClient library: A simple SMTP client library
snap-blaze library: blaze-html integration for Snap
snap-blaze-clay library: blaze-html-clay integration for Snap
sock2stream program: Tunnel a socket over a single datastream (stdin/stdout)
socks library: Socks proxy (version 5) implementation.
splice library: Cross-platform Socket to Socket Data Splicing
sscgi library: Simple SCGI Library
ssh library: A pure-Haskell SSH server library.
sshtun program: Wrapper daemon to manage an ssh tunnel
starling library: A memcached client
Stomp library: Client library for Stomp brokers.
stomp-queue library: Stompl Client Library
stompl library: Stomp Parser and Utilities
stunclient library: RFC 5389: Session Traversal Utilities for NAT (STUN) client
task program: A command line tool for keeping track of tasks you worked on
tcp library: A purely functional TCP implementation
tftp library and program: A library for building tftp servers
themoviedb library and program: Haskell API bindings for http://themoviedb.org
throttle program: Throttle TCP/IPv4 connections to a given server.
tls library: TLS/SSL protocol native implementation (Server and Client)
tls-debug programs: Set of programs for TLS testing and debugging
tls-extra library and program: TLS extra default values and helpers
torrent library: BitTorrent file parser.
tremulous-query library: Library for polling Tremulous servers
tuntap library: Interface to TUN/TAP drivers.
twidge program: Unix Command-Line Twitter and Identica Client
twitter program: A Haskell-based CLI Twitter client
udbus library and programs: Small DBus implementation
udbus-model library and program: Model API for udbus introspection and definitions
urlcheck program: Parallel link checker
UrlDisp library: Url dispatcher. Helps to retain friendly URLs in web applications.
wai-routes library: Typesafe URLs for Wai applications.
warp-dynamic library and program: Dynamic configurable warp HTTP server
webserver library: HTTP server library
websockets library: A sensible and clean way to write WebSocket-capable servers in Haskell.
websockets-snap library: Snap integration for the websockets library
winio library: I/O library for Windows
WL500gPControl programs: A simple command line tools to control the Asus WL500gP router
WL500gPLib library and program: A simple library to access to the WL 500gP router from the Haskell code
wol library and program: Send a Wake on LAN Magic Packet
wp-archivebot program: Subscribe to a wiki's RSS feed and archive external links
wsedit program: A small tool to list, add and remove webseeds from a torrent file
XMMS library: XMMS2 client library.
XMPP library: XMPP library
yaml-rpc library: Simple library for network (TCP/IP) YAML RPC
yjftp library and program: CUI FTP client like 'ftp', 'ncftp'
yjftp-libs library and program: CUI FTP client like 'ftp', 'ncftp'
Yogurt library: A MUD client library
Yogurt-Standalone program: A functional MUD client
zeromq3-conduit library: Conduit bindings for zeromq3-haskell
zigbee-znet25 library: XBee ZNet 2.5 (ZigBee) wireless modem communications
zmcat library and program: Command-line tool for ZeroMQ.
zmqat program: A socat-like tool for zeromq socket library

Network APIs

antigate library: Interface for antigate.com captcha recognition API
dropbox-sdk library: A library to access the Dropbox HTTP API.
github library: Access to the Github API, v3.
liblastfm library: Lastfm API interface
librandomorg library: Wrapper to Random.org API
network-api-support library: Toolkit for building http client libraries over Network.Http.Conduit
phone-push library: Push notifications for Android and iOS
postmark library: Library for postmarkapp.com HTTP Api
simplenote library: Haskell interface for the simplenote API.
trajectory library and programs: Tools and a library for working with Trajectory.

NetworkAPIs

libstackexchange library: StackExchange API interface

Networking

hans library and program: IPv4 Network Stack
llsd library and programs: An implementation of the LLSD data system
Pup-Events library and program: A networked event handling framework for hooking into other programs.
Pup-Events-Client library: A networked event handling framework for hooking into other programs.
Pup-Events-Demo programs: A networked event handling framework for hooking into other programs.
Pup-Events-PQueue library: A networked event handling framework for hooking into other programs.
Pup-Events-Server library: A networked event handling framework for hooking into other programs.

Noise

hsnoise library: A coherent 3d noise library.
Noise library: A Haskell coherent noise generator based on libnoise

Ntrol

acme-comonad library: A more efficient dualization

Number Theory

arithmoi library: Efficient basic number-theoretic functions. Primes, powers, integer logarithms.
factory library and program: Rational arithmetic in an irrational world.
Numbers library: An assortment of number theoretic functions
opentheory-prime library and program: Prime numbers

Numeric

approximate library: Approximate discrete values and numbers
bed-and-breakfast library: Efficient Matrix operations in 100% Haskell.
compensated library: Compensated floating-point arithmetic
fast-math library: Non IEEE-754 compliant compile-time floating-point optimisations
flat-mcmc library: Painless general-purpose sampling.
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
hyperloglog library: An approximate streaming (constant space) unique object counter
lbfgs library: L-BFGS optimization
lens-aeson library: Law-abiding lenses for aeson
log-domain library: Log-domain arithmetic
math-functions library: Special functions and Chebyshev polynomials
nats library: Haskell 98 natural numbers
repr library: Render overloaded expressions to their textual representation.
rungekutta library: A collection of explicit Runge-Kutta methods of various orders

Numerical

AC-Angle library: Angles in degrees and radians.
AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Terminal library: Trivial wrapper over ansi-terminal.
AC-Vector library: Efficient geometric vectors and transformations.
AC-Vector-Fancy library: Fancy type-system stuff for AC-Vector
altfloat library: Alternative floating point support for GHC.
applicative-numbers library: Applicative-based numeric instances
bindings-eskit library: Bindings to ESKit.
bindings-levmar library: Low level bindings to the C levmar (Levenberg-Marquardt) library
cmaes library: CMA-ES wrapper in Haskell
continued-fractions library: Continued fractions.
converge library: Limit operations for converging sequences
DifferentialEvolution library: Global optimization using Differential Evolution
dvda library: Efficient automatic differentiation and code generation
fibonacci library: Fast computation of Fibonacci numbers.
fixed-point library: Binary fixed-point arithmetic
fixed-point-vector library: Unbox instances for the fixed-point package
fixed-point-vector-space library: vector-space instances for the fixed-point package
gamma library: Gamma function and related functions.
gutenberg-fibonaccis library: The first 1001 Fibonacci numbers, retrieved from the Gutenberg Project.
hfoil library and program: Hess-Smith panel code for inviscid 2-d airfoil analysis
ieee-utils library: ieee-utils
ks-test library: Kolmogorov distribution and Kolmogorov-Smirnov test.
levmar library: An implementation of the Levenberg-Marquardt algorithm
levmar-chart library and program: Plots the results of the Levenberg-Marquardt algorithm in a chart
numerals library: Convert numbers to number words
numerals-base library: Convert numbers to number words
numeric-limits library: Various floating point limit related constants.
numeric-tools library: Collection of numerical tools for integration, differentiation etc.
polynomial library: Polynomials
primes library: Efficient, purely functional generation of prime numbers
pure-fft library: Fast Fourier Transform
RANSAC library: The RANSAC algorithm for parameter estimation.
reducers library: Semigroups, specialized containers and a general map/reduce framework
roman-numerals library: Parsing and pretty printing of Roman numerals
roots library: Root-finding algorithms (1-dimensional)
sde-solver library: Distributed SDE solver
simple-vec3 library: Three-dimensional vectors of doubles with basic operations
splines library: B-Splines, other splines, and NURBS.

OAuth

hoauth library: A Haskell implementation of OAuth 1.0a protocol.

Operating System

manatee library and program: The Haskell/Gtk+ Integrated Live Environment
manatee-all library and program: Virtual package to install all Manatee packages.
manatee-anything library and program: Multithread interactive input/search framework for Manatee
manatee-core library: The core of Manatee.

Optimisation

circle-packing library: Simple heuristic for packing discs of varying radii in a circle
combinatorial-problems library: ...
GA library: Genetic algorithm library
genprog library: Genetic programming library
local-search library: Generalised local search within Haskell, for applications in combinatorial optimisation.
moo library: Genetic algorithm library
OptDir library: The OptDir type for representing optimization directions.
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc

Optimization

cmaes library: CMA-ES wrapper in Haskell
DifferentialEvolution library: Global optimization using Differential Evolution
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
moo library: Genetic algorithm library
OptDir library: The OptDir type for representing optimization directions.
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc

Options

uu-options library and program: Parse command line options using uu-interleave and uu-parsinglib

Other

external-sort library: Sort large arrays on your hard drive. Kind of like the unix util sort.
hsgtd program: Console-based gettings-things-done application
htodo program: A todo application.
lub library: information operators: least upper bound (lub) and greatest lower bound (glb)
pdynload library: pdynload is polymorphic dynamic linking library.
RandomDotOrg library: Interface to random.org
unamb library and program: Unambiguous choice

Parallelism

abstract-par library: Type classes generalizing the functionality of the 'monad-par' library.
abstract-par-accelerate library: Provides the class ParAccelerate, nothing more.
accelerate library: An embedded language for accelerated array processing
accelerate-cuda library: Accelerate backend for NVIDIA GPUs
accelerate-examples programs: Examples using the Accelerate library
accelerate-fft library: FFT using the Accelerate library
accelerate-io library: Read and write Accelerate arrays in various formats
cnc-spec-compiler program: Compiler/Translator for CnC Specification Files.
concurrent-supply library: A fast concurrent unique identifier supply with a pure API
edenmodules library: Semi-explicit parallel programming library
edenskel library: Semi-explicit parallel programming skeleton library
haskell-cnc library and program: Library for parallel programming in the Intel Concurrent Collections paradigm.
hdph library and programs: Haskell distributed parallel Haskell
meta-par library: Provides the monad-par interface, but based on modular scheduler "mix-ins".
meta-par-accelerate library: Support for integrated Accelerate computations within Meta-par.
monad-par library: A library for parallel programming based on a monad
monad-par-extras library: Combinators and extra features for Par monads
scan-vector-machine library: An implementation of the Scan Vector Machine instruction set in Haskell
schedyield library: Exposes standard POSIX function sched_yield.

Parser

fix-parser-simple library: Simple fix-expression parser
hs-logo program: Logo interpreter written in Haskell
pipes-aeson library: Encode and decode JSON streams using aeson and pipes.
pipes-attoparsec library: Attoparsec and Pipes integration.
stompl library: Stomp Parser and Utilities

Parsing

antlrc library and program: Haskell binding to the ANTLR parser generator C runtime library.
appar library: A simple applicative parser
aterm library: serialisation for Haskell values with sharing support
attoparsec library: Fast combinator parsing for bytestrings and text
attoparsec-conduit library: Consume attoparsec parsers via conduit.
attoparsec-enumerator library: Pass input from an enumerator to an Attoparsec parser.
attoparsec-expr library: Port of parsec's expression parser to attoparsec.
attoparsec-parsec library: An Attoparsec compatibility layer for Parsec
attoparsec-text-enumerator library: (deprecated)
binary library: Binary serialisation for Haskell values using lazy ByteStrings
binary-bits library: Bit parsing/writing on top of binary.
binary-generic library: Generic binary serialisation using binary and syb.
binary-strict library: Binary deserialisation using strict ByteStrings
boolexpr library: Boolean expressions with various representations and search queries.
boomerang library: Library for invertible parsing and printing
bytestringparser library: Combinator parsing with Data.ByteString.Lazy
bytestringparser-temporary library: Combinator parsing with Data.ByteString.Lazy
cassette library: A combinator library for simultaneously defining parsers and pretty printers.
cereal library: A binary serialization library
cereal-ieee754 library: Floating point support for the 'cereal' serialization library
ChristmasTree library: Alternative approach of 'read' that composes grammars instead of parsers.
concrete-relaxng-parser program: A parser driven by a standard RELAX NG schema with concrete syntax extensions.
ConfigFile library and program: Configuration file reading & writing
ConfigFileTH library: Template haskell for reading ConfigFiles.
cron library: Cron datatypes and Attoparsec parser
crypto-pubkey-openssh library: OpenSSH keys decoder/encoder
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-treify library: Reify a recursive data structure into an explicit graph.
derp library: Derivative Parsing
dtd-text library: Parse and render XML DTDs
EEConfig library: ExtremlyEasyConfig - Extremly Simple parser for config files
expat-enumerator library: Enumerator-based API for Expat
expression-parser library: Generalization of parsec's expression parser.
fez-conf library: Simple functions for loading config files
fixhs library and program: FIX (co)parser
getflag library: Command-line parser.
grammar-combinators library: A parsing library of context-free grammar combinators.
Grempa library: Embedded grammar DSL and LALR parser generator
hascal library and program: A minimalistic but extensible and precise calculator
hsemail library: Internet Message Parsers
hsemail-ns library: Internet Message Parsers
incremental-parser library: Generic parser library capable of providing partial results from partial input.
IndentParser library: Combinators for parsing indentation based syntatic structures
indents library: indentation sensitive parser-combinators for parsec
infix library: Infix expression re-parsing (for HsParser library)
iteratee-parsec library: Package allowing parsec parser initeratee
kangaroo library: Binary parsing with random access.
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
libxml-sax library: Bindings for the libXML2 SAX interface
lispparser library: Simple parser for LISP S-expressions
mtlparse library: parse library using mtl package
multiarg library: Combinators to build command line parsers
netstring-enumerator library: Enumerator-based netstring parsing
nextstep-plist library: NextStep style plist parser and printer
opentheory-parser library and program: Stream parsers
papillon library and program: packrat parser
PArrows library: Arrow parser combinators similar to Parsec
parse-dimacs library: DIMACS CNF parser library
parsec library: Monadic parser combinators
parsec-extra library: Some miscellaneous basic string parsers.
parsec-numbers library: Utilities for parsing numbers from strings
parsec-parsers library: Parsing instances for Parsec
parsec-permutation library: Applicative permutation parser for Parsec intended as a replacement for Text.Parsec.Perm.
parsec-utils library: Utility functions and combinators for Text.Parsec
parsec1 library: Portable monadic parser combinators
parsec2 library: Monadic parser combinators
parsec3 library: Monadic parser combinators
ParsecTools library: Parsec combinators for more complex objects.
parsely library
parsers library: Parsing combinators
parsimony library: Monadic parser combinators derived from Parsec
penn-treebank library: Tools for manipulating the Penn TreeBank
permute library: Generalised permutation parser combinator
pipes-parse library: Parsing infrastructure for the pipes ecosystem
polyparse library: A variety of alternative parser combinator libraries.
property-list library: Apple property list parser
RefSerialize library: Write to and read from ByteStrings maintaining internal memory references
roman-numerals library: Parsing and pretty printing of Roman numerals
SableCC2Hs library and program: Generate a parser (in Haskell) with the SableCC parser generator.
safecopy library: Binary serialization with version control.
sexp library and program: S-Expression parsing/printing made fun and easy
simple-atom library: Atom (or symbol) datatype for fast comparision and sorting.
strptime library: Efficient parsing of LocalTime using a binding to C's strptime, ...
subtitleParser library: A parser for .srt and .sub files
SVG2Q program: Code generation tool for Quartz code from a SVG.
svg2q program: Code generation tool for Quartz code from a SVG.
syntactical library: Distfix expression parsing library
tconfig library: Simple text configuration file parser library.
trifecta library: A modern parser combinator library with convenient diagnostics
uu-interleaved library: ...
uu-parsinglib library: Fast, online, error-correcting, monadic, applicative, merging, permuting, ...
uu-tc library: Haskell 98 parser combintors for INFOB3TC at Utrecht University
uulib library: Haskell Utrecht Tools Library
vcs-revision library: Facilities for accessing the version control revision of the current directory.
weighted-regexp library and programs: Weighted Regular Expression Matcher
WikimediaParser library: A parser for wikimedia style article markup.
xml-parsec library: Parsing XML with Parsec
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation

Pattern Classification

DecisionTree library: A very simple implementation of decision trees for discrete attributes.
svm-simple library: Medium level, simplified, bindings to libsvm

Pattern Recognition

hps-kmeans library: A nice implementation of the k-Means algorithm.

PDF

manatee-pdfviewer library and program: PDF viewer extension for Manatee.
pdf-toolbox-core library: A collection of tools for processing PDF files.
pdf-toolbox-document library: A collection of tools for processing PDF files.
pdfsplit program: split two-column PDFs, so there is one column per page

PDF Viewer

manatee-pdfviewer library and program: PDF viewer extension for Manatee.

Performance

criterion library: Robust, reliable performance measurement and analysis

Phantom Types

tagged library: Haskell 98 phantom types to avoid unsafely passing dummy arguments
tagged-th library: QuasiQuoter and Template Haskell splices for creating proxies at higher-kinds
tagged-transformer library: Provides newtype wrappers for phantom types to avoid unsafely passing dummy arguments

Physics

bullet library: A wrapper for the Bullet physics engine.
dimensional library: Statically checked physical dimensions.
dimensional-tf library: Statically checked physical dimensions, implemented using type families.
dsmc library: DSMC library for rarefied gas dynamics
dsmc-tools programs: DSMC toolkit for rarefied gas dynamics
fitsio library: A library for reading and writing data files in the FITS data format.
hepevt library: HEPEVT parser
HGamer3D-Bullet-Binding library: Windows Game Engine for the Haskell Programmer - Bullet Bindings
Hipmunk library: A Haskell binding for Chipmunk.
HipmunkPlayground program: A playground for testing Hipmunk.
HODE library: Binding to libODE
lambdacube-bullet library: Example for combining LambdaCube and Bullet
lha library: Data structures for the Les Houches Accord
lhe library: Parser and writer for Les-Houches event files
unittyped library: An extendable library for type-safe computations including units.

Pipes

pipes library: Compositional pipelines
pipes-aeson library: Encode and decode JSON streams using aeson and pipes.
pipes-attoparsec library: Attoparsec and Pipes integration.
pipes-binary library: Encode and decode binary streams using the pipes and binary libraries.
pipes-concurrency library: Concurrency for the pipes ecosystem
pipes-network library: Use network sockets together with the pipes library.
pipes-network-tls library: TLS-secured network connections support for pipes.
pipes-parse library: Parsing infrastructure for the pipes ecosystem
pipes-safe library: Safety for the pipes ecosystem
pipes-zlib library: Pipes to deal with zlib compressed data.

PL/SQL Tools

PlslTools program: So far just a lint like program for PL/SQL. Diff and refactoring tools are planned

Plotting

easyplot library: A tiny plotting library, utilizes gnuplot for plotting.

Polymorphism

prelude-extras library: Haskell 98 - higher order versions of Prelude classes
syb-extras library: Higher order versions of the Scrap Your Boilerplate classes

Prelude

basic-prelude library: An enhanced core prelude; a common foundation for alternate preludes.
classy-prelude library: A typeclass-based Prelude.
classy-prelude-conduit library: conduit instances for classy-prelude
prelude-generalize library: Another kind of alternate Prelude file
prelude-prime library: A slightly better (but conservative) Prelude
prelude-safeenum library: A redefinition of the Prelude's Enum class in order to render it safe.
yap library: yet another prelude - a simplistic refactoring with algebraic classes

Preprocessor

hampp program: Haskell macro preprocessor

Pretty Printer

aeson-pretty library and program: JSON pretty-printing library and command-line tool.
GenericPretty library: A generic, derivable, haskell pretty printer.
layout library: Turn values into pretty text or markup
repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
trifecta library: A modern parser combinator library with convenient diagnostics
xhtml library: An XHTML combinator library

Process Manager

manatee-processmanager library and program: Process manager extension for Manatee.

Profiling

edentv program: A Tool to Visualize Parallel Functional Program Executions
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
hp2any-core library: Heap profiling helper library
hp2any-graph library and programs: ...
hp2any-manager program: A utility to visualise and compare heap profiles.
hp2html program: A tool for converting GHC heap-profiles to HTML.
linux-perf library and programs: Read files generated by perf on Linux
NoSlow programs: Microbenchmarks for various array libraries
prof2pretty programs: generate pretty source from time/allocation profiles
threadscope program: A graphical tool for profiling parallel Haskell programs.

Program Transformation

hfusion library: A library for fusing a subset of Haskell programs.
optimusprime program: A supercompiler for f-lite

Protocol

fixhs library and program: FIX (co)parser
hoauth library: A Haskell implementation of OAuth 1.0a protocol.
salvia-protocol library: Salvia webserver protocol suite supporting URI, HTTP, Cookie and MIME.

Proxies

pipes library: Compositional pipelines
pipes-concurrency library: Concurrency for the pipes ecosystem
pipes-parse library: Parsing infrastructure for the pipes ecosystem
pipes-safe library: Safety for the pipes ecosystem

Pugs

HsParrot library: Haskell integration with Parrot virtual machine
HsPerl5 library: Haskell interface to embedded Perl 5 interpreter
HsSyck library: Fast, lightweight YAML loader and dumper
MetaObject library: A meta-object system for Haskell based on Perl 6
Pugs program: A Perl 6 Implementation
pugs-compat library: Portable Haskell/POSIX layer for Pugs
pugs-DrIFT library and program: DrIFT with pugs-specific rules.
stringtable-atom library: Memoize Strings as Atoms for fast comparison and sorting, with maps and sets

Pup-Events

Pup-Events library and program: A networked event handling framework for hooking into other programs.
Pup-Events-Client library: A networked event handling framework for hooking into other programs.
Pup-Events-Demo programs: A networked event handling framework for hooking into other programs.
Pup-Events-PQueue library: A networked event handling framework for hooking into other programs.
Pup-Events-Server library: A networked event handling framework for hooking into other programs.

Quantum

QIO library: The Quantum IO Monad is a library for defining quantum computations in Haskell

QuasiQoutes

neat-interpolation library: A quasiquoter for neat and simple multiline text interpolation

Random

AC-Random library: A pure Haskell PRNG.
rand-vars library: Random variable library, with Functor, Applicative and Monad instances.
Random123 library: Haskell port of Random123 library

Raspberrypi

mcpi library and programs: Connect to MineCraft running on a Raspberry PI.

RDF

rdf4h library and program: A library for RDF processing in Haskell

Reactivity

Animas library: Updated version of Yampa: a library for programming hybrid systems.
bot library: bots for functional reactive programming
Dflow library: Processing Real-time event streams
dow program: Dungeons of Wor
elerea library: A minimalistic FRP library
elerea-examples programs: Example applications for Elerea
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-frp library: Functional Reactive Programming core
grapefruit-records library: A record system for Functional Reactive Programming
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
io-reactive library and program: An API for generating TIMBER style reactive objects.
reaction-logic library and program: pluggable pure logic serializable reactor
reactive library: Push-pull functional reactive programming
reenact library: A reimplementation of the Reactive library.
resumable-exceptions library: A monad transformer for resumable exceptions
wxFruit library and program: An implementation of Fruit using wxHaskell.
Yampa library: Library for programming hybrid systems.
YFrob library: Yampa-based library for programming robots

Records

named-records library: Flexible records with named fields.
records library: A flexible record system
vinyl library: Extensible Records

Recursion

metamorphic library: metamorphisms: ana . cata or understanding folds and unfolds
recursion-schemes library: Generalized bananas, lenses and barbed wire
tie-knot library: "Ties the knot" on a given set of structures that reference each other by keys.

Refactoring

HaRe programs: the Haskell Refactorer.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel

Reflection

data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-treify library: Reify a recursive data structure into an explicit graph.
global-variables library: Namespaced, global, and top-level mutable variables without unsafePerformIO.
hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel
reflection library: Reifies arbitrary terms into types that can be reflected back into terms
typehash library: Create a unique hash value for a type.
yoko library: Generic Programming with Disbanded Data Types

Regex

regex-genex library and program: From a regex, generate all possible strings it can match
regexchar library and program: A POSIX, extended regex-engine.
regexdot library: A polymorphic, POSIX, extended regex-engine.

Reverse Engineering

dewdrop library: Find gadgets for return-oriented programming on x86
hdis86 library: Interface to the udis86 disassembler for x86 and x86-64 / AMD64

RFC

idna library: Implements IDNA (RFC 3490).

Robotics

NXT library and programs: A Haskell interface to Lego Mindstorms NXT
pcd-loader library and program: PCD file loader.
RMP library and programs: Binding to code that controls a Segway RMP

RSS

manatee-reader library and program: Feed reader extension for Manatee.

RSS/Atom Reader

manatee-reader library and program: Feed reader extension for Manatee.

Sample Code

parconc-examples programs: Examples to accompany the book "Parallel and Concurrent Programming in Haskell"

Scheduling

hcron library: A simple job scheduler, which just runs some IO action at a given time.
turni program: shifts scheduling tool

Science

atmos library: 1976 US Standard Atmosphere
atmos-dimensional library: dimensional wrapper on atmos package
atmos-dimensional-tf library: dimensional-tf wrapper on atmos package
hfoil library and program: Hess-Smith panel code for inviscid 2-d airfoil analysis
tpdb library: Data Type for Rewriting Systems

Scientific Simulation

simgi program: stochastic simulation engine

Screensaver

TimePiece library and program: A simple tile-based digital clock screen saver

Scripting

hscrtmpl program: Haskell shell script template
hslua library: A Lua language interpreter embedding in Haskell
luachunk library: Library functions for reading and writing Lua chunks
luautils library: Helpers for Haskell integration with Lua
timestamp-subprocess-lines program: Run a command and timestamp its stdout/stderr lines

Search

boolexpr library: Boolean expressions with various representations and search queries.
infinite-search library: Exhaustively searchable infinite sets.
regexdot library: A polymorphic, POSIX, extended regex-engine.
sphinx library: Haskell bindings to the Sphinx full-text searching daemon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
stringsearch library: Fast searching, splitting and replacing of ByteStrings

Security

bindings-sipc library and programs: Low level bindings to SIPC.
dclabel-eci11 library: The Disjunction Category Label Format.
dewdrop library: Find gadgets for return-oriented programming on x86
GoogleSB library: Interface to Google Safe Browsing API
jail library: Jailed IO monad.
lio library: Labeled IO Information Flow Control Library
lio-eci11 library: Labeled IO library
scyther-proof program: Automatic generation of Isabelle/HOL correctness proofs for security protocols.
seclib library: A lightweight library for Information-flow security in Haskell
secrm program: Example of writing "secure" file removal in Haskell rather than C.
sme library: A library for Secure Multi-Execution in Haskell

Semantic Web

hasparql-client library: This package enables to write SPARQL queries to remote endpoints.
swish library and program: A semantic web toolkit.

Semigroups

reducers library: Semigroups, specialized containers and a general map/reduce framework

Serialization

beamable library: Generic serializer/deserializer with compact representation
bits library: Various bit twiddling and bitwise serialization primitives
bytes library: Sharing code for serialization between binary and cereal

Service

twill library: Twilio API interaction

Simulation

aivika library: A multi-paradigm simulation library
aivika-experiment library: Simulation experiments for the Aivika library
aivika-experiment-chart library: Simulation experiments with charting for the Aivika library
SoOSiM library: Abstract full system simulator

SMT

linearEqSolver library: Use SMT solvers to solve linear systems over integers and rationals
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
smtLib library: A library for working with the SMTLIB format.

Snap

heist library: An Haskell template system supporting both HTML5 and XML.
restful-snap library
snap library and program: Top-level package for the Snap Web Framework
snap-auth-cli program: Command-line tool to manage Snap AuthManager database
snap-core library: Snap: A Haskell Web Framework (core interfaces and types)
snap-extras library: A collection of useful helpers and utilities for Snap web applications.
snap-loader-dynamic library: Snap: A Haskell Web Framework: dynamic loader
snap-loader-static library: Snap: A Haskell Web Framework: static loader
snap-predicates library: Declarative routing for Snap.
snap-server library: A fast, iteratee-based, epoll-enabled web server for the Snap Framework
snaplet-acid-state library: acid-state snaplet for Snap Framework
snaplet-actionlog library: Generic action log snaplet for the Snap Framework
snaplet-coffee library: CoffeeScript for Snap, auto-compilation and pre-compilation.
snaplet-fay library: Fay integration for Snap with request- and pre-compilation.
snaplet-persistent library: persistent snaplet for the Snap Framework
snaplet-postgresql-simple library: postgresql-simple snaplet for the Snap Framework
snaplet-redis library: Redis support for Snap Framework
snaplet-redson library: CRUD for JSON data with Redis storage
snaplet-sqlite-simple library: sqlite-simple snaplet for the Snap Framework

Sound

alsa-core library: Binding to the ALSA Library API (Exceptions).
alsa-gui programs: Some simple interactive programs for sending MIDI control messages via ALSA
alsa-mixer library: Bindings to the ALSA simple mixer API.
alsa-pcm library and programs: Binding to the ALSA Library API (PCM audio).
alsa-seq library and programs: Binding to the ALSA Library API (MIDI sequencer).
alure library: A Haskell binding for ALURE
ALUT library: A binding for the OpenAL Utility Toolkit
bindings-sc3 library: Low-level bindings to the SuperCollider synthesis engine library.
conductive-base library: a library for live coding and real-time musical applications
conductive-clock library: a library for displaying musical time in a terminal-based clock
conductive-hsc3 library: a library with examples of using Conductive with hsc3
conductive-song library: a library of functions which are useful for composing music
csound-expression library: library to make electronic music
dsp library: Haskell Digital Signal Processing
EsounD library and program: Type-safe bindings to EsounD (ESD; Enlightened Sound Daemon)
flaccuraterip program: Verify FLAC files ripped form CD using AccurateRip™
fluidsynth library: Haskell bindings to FluidSynth
freesound library and program: Access the Freesound Project database
gulcii program: graphical untyped lambda calculus interactive interpreter
hamid library: Binding to the OS level Midi services (fork of system-midi).
haskore library and programs: The Haskore Computer Music System
haskore-realtime library: Routines for realtime playback of Haskore songs
haskore-supercollider library and programs: Haskore back-end for SuperCollider
haskore-synthesizer library and program: Music rendering coded in Haskell
hbeat program: A simple step sequencer GUI.
hCsound library: interface to CSound API
hdf library: Haskell data flow library for audio processing
hemkay program: A module music mixer and player
hemkay-core library: A device independent module music mixer
hmeap library: Haskell Meapsoft Parser
hmeap-utils programs: Haskell Meapsoft Parser Utilities
hmidi library: Binding to the OS level MIDI services
hmp3 program: An ncurses mp3 player written in Haskell
hommage library: Haskell Offline Music Manipulation And Generation EDSL
hommage-ds library: DirectSound extension (Windows) for the Hommage sound library
honk library: Cross-platform interface to the PC speaker.
hosc library: Haskell Open Sound Control
hosc-json library: Haskell Open Sound Control JSON Serialisation
hosc-utils programs: Haskell Open Sound Control Utilities
hplaylist program: Application for managing playlist files on a music player
hsc3 library: Haskell SuperCollider
hsc3-auditor library: Haskell SuperCollider Auditor
hsc3-cairo library: haskell supercollider cairo drawing
hsc3-db library: Haskell SuperCollider Unit Generator Database
hsc3-dot library: haskell supercollider graph drawing
hsc3-graphs library and programs: Haskell SuperCollider Graphs
hsc3-lang library: Haskell SuperCollider Language
hsc3-plot library: Haskell SuperCollider Plotting
hsc3-process library and programs: Create and control scsynth processes
hsc3-rec library: Haskell SuperCollider Record Variants
hsc3-rw library: hsc3 re-writing
hsc3-server library and programs: SuperCollider server resource management and synchronization.
hsc3-sf library: Haskell SuperCollider SoundFile
hsc3-sf-hsndfile library: Haskell SuperCollider SoundFile
hsc3-unsafe library: Unsafe Haskell SuperCollider
hsc3-utils programs: Haskell SuperCollider Utilities
hsdif library: Haskell SDIF
hsharc library: Haskell SHARC bindings
hsndfile library: Haskell bindings for libsndfile
hsndfile-storablevector library: Haskell bindings for libsndfile (Data.StorableVector interface)
hsndfile-vector library: Haskell bindings for libsndfile (Data.Vector interface)
hspear library: Haskell Spear Parser
htune program: harmonic analyser and tuner for musical instruments
idiii library and program: ID3v2 (tagging standard for MP3 files) library
jack library and programs: Bindings for the JACK Audio Connection Kit
jack-bindings library: DEPRECATED Bindings to the JACK Audio Connection Kit
jackminimix library: control JackMiniMix
libmpd library: An MPD client library.
live-sequencer library and programs: Live coding of MIDI music
loris library: interface to Loris API
lye program: A Lilypond-compiling music box
midi library and program: Handling of MIDI messages and files
midi-alsa library: Convert between datatypes of the midi and the alsa packages
midimory program: A Memory-like (Concentration, Pairs, ...) game for tones
MusicBrainz-libdiscid library: Binding to libdiscid by MusicBrainz
OpenAL library: A binding to the OpenAL cross-platform 3D audio API
opensoundcontrol-ht library: Haskell OpenSoundControl utilities
portaudio library: Haskell bindings for the PortAudio library.
PortMidi library: A binding for PortMedia/PortMidi
pulse-simple library: binding to Simple API of pulseaudio
reactive-balsa library: Programmatically edit MIDI events via ALSA and reactive-banana
sample-frame library and program: Handling of samples in an (audio) signal
sample-frame-np library: Orphan instances for types from sample-frame and numericprelude
sc3-rdu library: Haskell bindings to sc3-rdu (sc3 rd ugens)
sfml-audio library: minimal bindings to the audio module of sfml
sndfile-enumerators library: Audio file reading/writing
sonic-visualiser library and program: Sonic Visualiser
sox library: Play, write, read, convert audio signals using Sox
soxlib library: Write, read, convert audio signals using libsox
split-record program: Split a big audio file into pieces at positions of silence
streamed library: Programmatically edit MIDI event streams via ALSA
supercollider-ht library and program: Haskell SuperCollider utilities
supercollider-midi programs: Demonstrate how to control SuperCollider via ALSA-MIDI
synthesizer library and programs: Audio signal processing coded in Haskell
synthesizer-alsa library and programs: Control synthesizer effects via ALSA/MIDI
synthesizer-core library and programs: Audio signal processing coded in Haskell: Low level part
synthesizer-dimensional library and programs: Audio signal processing with static physical dimensions
synthesizer-inference library and program: Audio signal processing with dynamic physical dimensions
synthesizer-llvm library and programs: Efficient signal processing using runtime compilation
synthesizer-midi library and programs: Render audio signals from MIDI files or realtime messages
taglib library: Binding to TagLib (ID3 tag library)
temporal-csound library: brings together temporal-music-notation and csound-expression packages
tidal library: Pattern language for improvised music
truelevel program: Audio file compressor-limiter
vision program: An XMMS2 client.
vorbiscomment library: Reading of Vorbis comments from Ogg Vorbis files
wavconvert program: Command-line tool for converting audio files and filling in ID3 tags
WAVE library: WAVE audio file IO library
wavesurfer library: Parse WaveSurfer files
x-dsp library: A embedded DSL for manipulating DSP languages in Haskell
xine library: Bindings to xine-lib
XMMS library: XMMS2 client library.
xmms2-client library: An XMMS2 client library.
xmms2-client-glib library: An XMMS2 client library — GLib integration.
YampaSynth programs: Software synthesizer
zoom-cache-pcm library: Library for zoom-cache PCM audio codecs
zoom-cache-sndfile program: Tools for generating zoom-cache-pcm files

Source Tools

HPath library and program: Extract Haskell declarations by name.

Source-tools

djinn program: Generate Haskell code from a type
ftshell program: Shell interface to the FreeTheorems library.
hscope program: cscope like browser for Haskell code
htags program: A Haskell98 parsing tags program similar to ctags.
interpol library and program: GHC preprocessor and library to enable variable interpolation in strings
ixdopp program: A preprocessor for expanding "ixdo" notation for indexed monads
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
sugarhaskell programs: Library-based syntactic extensibility for Haskell

Statistical Modeling

passage library: Parallel code generation for hierarchical Bayesian modeling.

Statistics

approx-rand-test library and programs: Approximate randomization test
exact-combinatorics library: Efficient exact computation of combinatoric functions.
flat-mcmc library: Painless general-purpose sampling.
HasGP library: A Haskell library for inference using Gaussian processes
hieraclus library: Automated clustering of arbitrary elements in Haskell.
HLearn-distributions library: Distributions for use with the HLearn library
hmatrix-gsl-stats library: GSL Statistics interface
hps-kmeans library: A nice implementation of the k-Means algorithm.
hstatistics library: Statistics
learn library: Learning Algorithms
liblinear-enumerator library: liblinear iteratee.
linda library: LINear Discriminant Analysis
logfloat library: Log-domain floating point numbers
Metrics library: Evaluation metrics commonly used in supervised machine learning
monoid-statistics library: Monoids for calculation of statistics of sample
mwc-random library: Fast, high quality pseudo random number generation
mwc-random-monad library: Monadic interface for mwc-random
NestedSampling library: A port of John Skilling's nested sampling C code to Haskell.
normaldistribution library: Minimum fuss normally distributed random values.
order-statistics library: L-Estimators for robust statistics
rclient library: Haskell client for Rserve
StatisticalMethods library: Collection of useful statistical methods.
statistics library: A library of statistical types, data, and functions
statistics-linreg library: Linear regression between two samples, based on the 'statistics' package.

Stochastic Control

teams library: Graphical modeling tools for sequential teams

Stomp

stomp-queue library: Stompl Client Library
stompl library: Stomp Parser and Utilities

String

neat-interpolation library: A quasiquoter for neat and simple multiline text interpolation
strings library: Functions for working with strings, including Text, ByteString, etc.

Subversion

svndump library: Library for reading Subversion dump files

Support Vector Machine

svm-simple library: Medium level, simplified, bindings to libsvm

Symbolic Computation

sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.

System

AC-BuildPlatform library: Detect which OS you're running on.
access-time library: Cross-platform support for retrieving file access times
aligned-foreignptr library: An aligned ForeignPtr type
angel program: Process management and supervision daemon
archive library and program: A library and programs for creating hardlinked incremental archives or backups
augeas library and program: A Haskell FFI wrapper for the Augeas API
autoproc library and program: EDSL for Procmail scripts
AWin32Console library: A binding to a part of the ANSI escape code for the console
bamse library and programs: A Windows Installer (MSI) generator framework
base-compat library: A compatibility layer for base
bindings-dc1394 library: Library for using firewire (iidc-1394) cameras
bindings-libv4l2 library: bindings to libv4l2 for Linux
bindings-mmap library: (deprecated) see bindings-posix instead
bindings-uname library: Low-level binding to POSIX uname(3)
bkr library and program: Backup utility for backing up to cloud storage services (S3 only right now)
bla program: a stupid cron
bluetile programs: full-featured tiling for the GNOME desktop environment
bsd-sysctl library: Access to the BSD sysctl(3) interface
byteorder library: Exposes the native endianness or byte ordering of the system.
bytestring-handle library: ByteString-backed Handles
bytestring-mmap library: mmap support for strict ByteStrings
c-io library: C IO.
cabal-debian library and program: Create a debianization for a cabal package
cabal-query library: Helpers for quering .cabal files or hackageDB's 00-index.tar
cabal2spec program: Generates RPM Spec files from cabal files
canonical-filepath library: Abstract data type for canonical file paths.
cautious-file library: Ways to write a file cautiously, ...
Clipboard library: System clipboard interface.
clippard library: A simple Haskell library for copying text to the clipboard in a cross-platform way.
clock library: High-resolution clock functions: monotonic, realtime, cputime.
cloudyfs program: A cloud in the file system.
cmdlib library and programs: a library for command line parsing & online help
CMQ library: cwmwl udp message queue
colock library: thread-friendly file locks that don't block the entire program
Command library: A replacement for System.Exit and System.Process
config-select program: A small program for swapping out dot files.
console-program library: Interpret the command line and contents of a config file as commands and options
CoreFoundation library: Bindings to Mac OSX's CoreFoundation framework
cpuid program: Binding for the cpuid machine instruction on x86 compatible processors
cpuperf program: Modify the cpu frequency on OpenBSD systems
cr program: Code review tool
crack library: A haskell binding to cracklib
cron library: Cron datatypes and Attoparsec parser
crystalfontz library: Control Crystalfontz LCD displays.
current-locale library: Get the current system locale in System.Locale format
daemons library and programs: Daemons in Haskell made fun and easy
darcs-buildpackage programs: Tools to help manage Debian packages with Darcs
datapacker program: Tool to help pack files into the minimum number of CDs/DVDs/etc
date-cache library: Date cacher
denominate library and program: Functions supporting bulk file and directory name normalization.
DescriptiveKeys library: A library for specifying xmonad key bindings with functionality.
dfsbuild program: Build Debian From Scratch CD/DVD images
diffdump programs: Tools for diffing stdout
direct-daemonize library: Library to switch to daemon mode using built-in OS facilities.
direct-plugins library: Lightweight replacement for Plugins, specific to GHC
directory library: library for directory handling
directory-layout library: Declare, construct and verify directory layout
directory-tree library: A simple directory-like tree datatype, with useful IO functions
DisTract library and programs: Distributed Bug Tracking System
dotfs library and program: Filesystem to manage and parse dotfiles
dtrace library and program: Haskell interface to the DTrace system tracing utility
dvdread library: A monadic interface to libdvdread
dynamic-linker-template library: Automatically derive dynamic linking methods from a data type.
dynamic-loader library: lightweight loader of GHC-based modules or packages
dzen-utils library: Utilities for creating inputs for dzen.
easy-file library: Cross-platform File handling
ekg library: Remote monitoring of processes
epoll library: epoll bindings
exception-mailer library: Catch all runtime exceptions and send an email
executable-path library: Finding out the full path of the executable.
explicit-iomodes library: File handles with explicit IOModes
explicit-iomodes-bytestring library: Extends explicit-iomodes with ByteString operations
explicit-iomodes-text library: Extends explicit-iomodes with Text operations
fast-logger library: A fast logging system
filemanip library: Expressive file and directory manipulation for Haskell.
FileManipCompat library: Expressive file and directory manipulation for Haskell.
filepath library: Library for manipulating FilePaths in a cross platform way.
FilePather library: Functions on System.FilePath
FileSystem library: File system data structure and monad transformer.
filesystem-enumerator library: Enumerator-based API for manipulating the filesystem.
filesystem-trees library: Recursively manipulate and traverse filesystems as lazy rose trees.
FindBin library: Locate directory of original program
flock library: Wrapper for flock(2)
fs-events library: A haskell binding to the FSEvents API
fsutils library: File system utilities for Haskell that are missing from built in libraries.
ftdi program: A thin layer over USB to communicate with FTDI chips
funion program: A unioning file-system using HFuse
futun program: Simple IP-over-UDP tunnel using TUNTAP
gconf library: Binding to the GNOME configuration database system.
getopt-simple library: A "System.Console.GetOpt" wrapper to make simple use case easy.
ghc-man-completion program: Generate a bash completion from the GHC manpage
gio library: Binding to the GIO.
glib library: Binding to the GLIB library for Gtk2Hs.
Glob library: Globbing library
global-lock library: A global lock implemented without unsafePerformIO
gnomevfs library: Binding to the GNOME Virtual File System library.
goa library: GHCi bindings to lambdabot
graph-serialize library: Serialization of data structures with references.
halfs library and programs: The HAskelL File System ("halfs" -- intended for use on the HaLVM)
hamid library: Binding to the OS level Midi services (fork of system-midi).
harchive programs: Networked content addressed backup and restore software.
hark program: A Gentoo package query tool.
hashed-storage library and program: Hashed file storage support code.
haskdeep program: Computes and audits file hashes.
haskell-bcrypt library: A bcrypt implementation for haskell
hcwiid library: Library to interface with the wiimote
hdaemonize library: Library to handle the details of writing daemons for UNIX
hdaemonize-buildfix library: Library to handle the details of writing daemons for UNIX
hdm program: a small display manager.
hen library: Haskell bindings to Xen hypervisor interface
hfsevents library: File/folder watching for OS X
HFuse library: HFuse is a binding for the Linux FUSE library.
hg-buildpackage programs: Tools to help manage Debian packages with Mercurial
hiernotify library: Notification library for a filesystem hierarchy.
hinotify library: Haskell binding to inotify
hinstaller library: Installer wrapper for Haskell applications
hmatrix-mmap library: Memory map Vector from disk into memory efficiently
hmidi library: Binding to the OS level MIDI services
HNM library and program: Happy Network Manager
hobbes program: A small file watcher for OSX
hotswap library: Simple code hotswapping.
hpapi library: Binding for the PAPI library
hsbackup program: simple utility for rolling filesystem backups
hscamwire library: Haskell bindings to IIDC1394 cameras, via Camwire
hsclock program: An elegant analog clock using Haskell, GTK and Cairo
hsdip library and program: hsdip - a Diplomacy parser/renderer
hsfacter library: A small and ugly library that emulates the output of the puppet facter program.
HSH library and program: Library to mix shell scripting with Haskell programs
HSHHelpers library: Convenience functions that use HSH, instances for HSH.
hslogstash library: A library to work with, or as, a logstash server
hsntp library and programs: Libraries to use SNTP protocol and small client/server implementations.
hsshellscript library: Haskell for Unix shell scripting tasks
HsSVN library: Partial Subversion (SVN) binding for Haskell
hstatsd library: Quick and dirty statsd interface
htime program: Timing utility for the command line
hurdle program: Extract function names from Windows DLLs.
io-capture library: capture IO action's stdout and stderr
io-memoize library: Memoize IO actions
io-storage library: A key-value store in the IO monad.
ioctl library: Type-safe I/O control package
IOR library: Region based resource management for the IO monad.
iptadmin program: web-interface for iptables
iteratee library: Iteratee-based I/O
iteratee-mtl library and program: Iteratee-based I/O
iterIO library: Iteratee-based IO with pipe operators
jail library: Jailed IO monad.
knob library: Memory-backed handles
kqueue library: A binding to the kqueue event library.
lazy-io library: Lazy IO
leapseconds-announced library: Leap seconds announced at library release time.
libexpect library: Library for interacting with console applications via pseudoterminals.
libnotify library: Haskell binding for Libnotify
libsystemd-daemon library: Haskell bindings for libsystemd-daemon.
libvirt-hs library: FFI bindings to libvirt virtualization API (http://libvirt.org)
linkchk program: linkchk is a network interface link ping monitor.
linux-blkid library: Linux libblkid
linux-kmod library: Linux kernel modules support
linux-mount library: Mount and unmount filesystems
linux-ptrace library: Wrapping of Linux' ptrace(2).
linux-xattr library: Read, set and list extended attributes
loadavg library: Load average parsing from /proc/loadavg and bindings to getloadavg (3)
ls-usb program: List USB devices
make-hard-links program: Change duplicated files into hard-links.
manatee-processmanager library and program: Process manager extension for Manatee.
matrix-market library: Read and write NIST Matrix Market files
mbox library: Read and write standard mailbox files.
mersenne-random library: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister
mersenne-random-pure64 library: Generate high quality pseudorandom numbers purely using a Mersenne Twister
metronome library: Time Synchronized execution.
microtimer library: A tiny library for benchmarking IO actions.
miniplex library and programs: simple 1-to-N interprocess communication
mmap library and program: Memory mapped files for POSIX and Windows
modbus-tcp library: Communicate with Modbus devices over TCP
monad-logger library: A class of monads which can log messages.
monitor program: Do things when files change.
mount library: Mounts and umounts filesystems
mpdmate program: MPD/PowerMate executable
mute-unmute program: Watches your screensaver and (un)mutes music when you (un)lock the screen.
nano-cryptr library: A threadsafe binding to glibc's crypt_r function
netlink library: Netlink communication for Haskell
network-server library and program: A light abstraction over sockets & co. for servers
newports program: List ports newer than N days on a FreeBSD system
nitro library: Haskell bindings for Nitro
nptools programs: A collection of random tools
old-locale library: locale library
old-time library: Time library
optparse-applicative library: Utilities and combinators for parsing command line options
pacman-memcache program: Read whole Pacman database which pushes it into the memory cache
pam library: Haskell binding for C PAM API
parsedate library: Data and time parsing for CalendarTime
partly library and program: Inspect, create, and alter MBRs.
pathtype library: Type-safe replacement for System.FilePath etc
Pipe library: Process piping library
plugins library: Dynamic linking for Haskell and C objects
plugins-auto library: Automatic recompilation and reloading of haskell modules.
poll library: Bindings to poll.h
pony program: Can I have a pony?
popenhs library: popenhs is a popen-like library for Haskell.
porte library and program: FreeBSD ports index search and analysis tool
PortFusion program: high-performance distributed reverse / forward proxy & tunneling for TCP
posix-acl library: Support for Posix ACL
posix-escape library: Quote arguments to be passed through the Unix shell
posix-filelock library: Nice wrapper around POSIX fcntl advisory locks
posix-pty library: Pseudo terminal interaction with subprocesses.
posix-realtime library: POSIX Realtime functionality
posix-timer library: Bindings to POSIX clock and timer functions.
posix-waitpid library: Low-level wrapping of POSIX waitpid(2).
powermate library: PowerMate bindings
prelude-plus program: Prelude for rest of us
proc library: Parse process information for Linux
process library: Process libraries
process-conduit library: Conduits for processes
process-extras library: Process extras
process-iterio library: IterIO Process Library
process-leksah library: Process libraries
process-listlike library and program: Enhanced version of process-extras
process-qq library: Quasi-Quoters for exec process
procstat library: get information on processes in Linux
progressbar library and program: Progressbar API
puppetresources program: A program that displays the puppet resources associated to a node given .pp files.
rainbow library: Print text to terminal with colors and effects
randfile program: Program for picking a random file
random library: random number library
random-shuffle library: Random shuffle implementation.
random-stream library: An infinite stream of random data
randomgen program: A fast, SMP parallel random data generator
randsolid program: Set the background of your root window to a random colour.
rdtsc library: Binding for the rdtsc machine instruction
regional-pointers library: Regional memory pointers
riot program: Riot is an Information Organisation Tool
RMP library and programs: Binding to code that controls a Segway RMP
rpm library and program: Cozy little project to question unruly rpm packages.
safe-lazy-io library: A library providing safe lazy IO features.
safe-plugins library: A small wrapper over hs-plugins to allow loading safe plugins
safer-file-handles library: Type-safe file handling
safer-file-handles-bytestring library: Extends safer-file-handles with ByteString operations
safer-file-handles-text library: Extends safer-file-handles with Text operations
schedyield library: Exposes standard POSIX function sched_yield.
ScratchFs program: Size limited temp filesystem based on fuse
select library: Wrap the select(2) POSIX function
selinux library: SELinux bindings
Semantique program: Command-line tool for maintaining the Semantique database.
serial library: POSIX serial port wrapper
setenv library: A cross-platform library for setting environment variables
setlocale library: A Haskell interface to setlocale()
shana library: treat haskell functions as unix pipes
shell-pipe library and programs: Pipe streams through external shell commands
shqq library: Embed shell commands with interpolated Haskell variables, and capture output
silently library: Prevent or capture writing to stdout and other handles.
simple-firewire library: Simplified interface for firewire cameras
simpleargs library: Provides a more flexible getArgs function with better error reporting.
sink library: An alternative to lazy I/O that doesn't conflate execution with evaluation
splice library: Cross-platform Socket to Socket Data Splicing
srcinst program: Build and install Debian packages completely from source
stickyKeysHotKey library: get and set STICKYKEYS.SKF_HOTKEYACTIVE
stm-delay library: Updatable one-shot timer polled with STM
strict library: Strict data types and String IO.
strict-io library: A library wrapping standard IO modules to provide strict IO.
strptime library: Efficient parsing of LocalTime using a binding to C's strptime, ...
sys-auth-smbclient library: Auth with smbclient command
system-argv0 library: Get argv[0] as a FilePath.
system-fileio library: Consistent filesystem interaction across GHC versions
system-filepath library: High-level, byte-based file and directory path manipulations
system-gpio library: GPIO wrapper libary for Raspberry Pi
system-posix-redirect library: A toy module that allows you to temporarily redirect a program's stdout.
system-time-monotonic library: Simple library for using the system's monotonic clock
system-uuid library and program: Bindings to system UUID functions.
tabloid program: View the output of shell commands in a table
taffybar library and program: A desktop bar similar to xmobar, but with more GUI
temporary library: Portable temporary file and directory support for Windows and Unix, ...
terminal-progress-bar library: A simple progress bar in the terminal
terminal-size library: Get terminal window height and width
threadPool program: Runs other programs in the manner of a thread pool
thyme library: A faster time library
tianbar library and program: A desktop bar based on WebKit
time library: A time library
time-compat library: Compatibility with old-time for the time package
time-extras library: Data instances for the time package
time-recurrence library: Generate recurring dates.
timeit library: Time a computation
timing-convenience library: Convenient functions for getting times.
uacpid program: Userspace Advanced Configuration and Power Interface event daemon
unix library: POSIX functionality
unix-bytestring library: Unix/Posix-specific functions for ByteStrings.
unix-compat library: Portable POSIX-compatibility layer.
unix-handle library: POSIX operations on Handles
unix-io-extra library: Support for writev, pwrite and pread.
unix-process-conduit library: Run processes on Unix systems, with a conduit interface
unix-pty-light library: POSIX pseudo-terminal support
Unixutils library: A crude interface between Haskell and Unix-like operating systems
Unixutils-shadow library: A simple interface to shadow passwords (aka, shadow.h)
usb library: Communicate with USB devices
usb-enumerator library: Iteratee enumerators for the usb package
usb-id-database library and program: A database of USB identifiers
usb-iteratee library: Iteratee enumerators for the usb package
usb-safe library: Type-safe communication with USB devices.
utf8-env library: UTF-8 aware substitutes for functions in System.Environment
vcs-revision library: Facilities for accessing the version control revision of the current directory.
vhd library and programs: Provides functions to inspect and manipulate virtual hard disk (VHD) files.
waitfree library: A wrapping library for waitfree computation.
watcher library: Opinionated filesystem watcher
whim library and program: A Haskell window manager
Win32 library: A binding to part of the Win32 library
Win32-junction-point library: Support for manipulating NTFS junction points.
Win32-notify library and program: A binding to part of the Win32 library for file notification
Win32-services library: Windows service applications
Win32-services-wrapper library: Wrapper code for making a Win32 service
winio library: I/O library for Windows
wordexp library: wordexp(3) wrappers
wordsetdiff program: Compare two files as sets of N-tuples of words.
XAttr library: Read, set, and list extended attributes
xattr library: Haskell extended file attributes interface
xdg-basedir library: A basic implementation of the XDG Base Directory specification.
xdg-userdirs library: Basic implementation of XDG user directories specification
xenstore library and program: Xenstore client access
xfconf library and programs: FFI bindings to xfconf
XInput library: Bindings for the DirectX XInput library.
xmobar program: A Minimalistic Text Based Status Bar
xmonad program: A tiling window manager
xmonad-bluetilebranch program: A tiling window manager
xmonad-contrib library: Third party extensions for xmonad
xmonad-contrib-bluetilebranch library: Third party extensions for xmonad
xmonad-eval library: Module for evaluation Haskell expressions in the running xmonad instance
xmonad-extras library: Third party extensions for xmonad with wacky dependencies
xmonad-utils programs: A small collection of X utilities
yaop library: Yet another option parser
zeromq-haskell library: Bindings to ZeroMQ 2.1.x
zeromq3-haskell library: Bindings to ZeroMQ 3.x
zoneinfo library: ZoneInfo library.
ztail program: Multi-file, colored, filtered log tailer.

System.Console

parseargs library and program: Command-line argument parsing library for Haskell programs

Teaching

cakyrespa program: run turtle like LOGO with lojban
gluturtle library and programs: turtle like LOGO with glut
lambda-toolbox program: An application to work with the lambda calculus (for learning)
simpleprelude library and programs: A simplified Haskell prelude for teaching
wxturtle library and program: turtle like LOGO with wxHaskell
xturtle library: turtle like LOGO

Template

manatee-template library and program: Template code to create Manatee application.
plat library: Simple templating library
template-hsml library: Haskell's Simple Markup Language

Template Haskell

antiquoter library: Combinator library for quasi- and anti-quoting.
ConfigFileTH library: Template haskell for reading ConfigFiles.
flexible-defaults library: Generate default function implementations for complex type classes.
haskell-src-meta library: Parse source to template-haskell abstract syntax.
language-haskell-extract library: Module to automatically extract functions from the local code.
multirec-alt-deriver library: Alternative multirec instances deriver
newtype-th library: A template haskell deriver to create Control.Newtype instances.
notcpp library: Avoiding the C preprocessor via cunning use of Template Haskell
pseudomacros library: cpp-style built-in macros using Template Haskell
tagged-th library: QuasiQuoter and Template Haskell splices for creating proxies at higher-kinds
th-build library: More convenient construction of TH ASTs
th-expand-syns library: Expands type synonyms in Template Haskell ASTs
th-extras library: A grab bag of functions for use with Template Haskell
th-kinds library: Automated kind inference in Template Haskell.
th-orphans library: Orphan instances for TH datatypes
th-sccs library: Binding group analysis in Template Haskell
tuple-th library: Generate (non-recursive) utility functions for tuples of statically known size

Templating

template-hsml library: Haskell's Simple Markup Language

Test

chuchu library: Behaviour Driven Development like Cucumber for Haskell
hpc-tracer program: Tracer with AJAX interface

Testing

AC-MiniTest library: A simple test framework.
Agata library: Generator-generator for QuickCheck
benchpress library: Micro-benchmarking with detailed statistics.
buildbox library: Rehackable components for writing buildbots and test harnesses.
buildbox-tools program: Tools for working with buildbox benchmark result files.
cabal-test program: Automated test tool for cabal projects.
ChasingBottoms library and program: For testing partial and infinite values.
checkers library: Check properties on standard classes and data structures.
chell library: A simple and intuitive library for automated testing.
chell-hunit library: HUnit support for the Chell testing library
chell-quickcheck library: QuickCheck support for the Chell testing library
chronograph library: measure timings of data evaluation
ClassLaws library: Stating and checking laws for type class methods
complexity library: Empirical algorithmic complexity
criterion library: Robust, reliable performance measurement and analysis
darcs-benchmark program: Comparative benchmark suite for darcs.
data-pprint library: Prettyprint and compare Data values
doctest library and program: Test interactive Haskell examples
doctest-prop library: Allow QuickCheck-style property testing within doctest.
gdiff-th library: Generate gdiff GADTs and Instances.
gencheck library: A testing framework inspired by QuickCheck and SmallCheck
GenSmsPdu program: Automatic SMS message generator
hackager program: Hackage testing tool
hspec library and program: Behavior-Driven Development for Haskell
hspec-expectations library: Catchy combinators for HUnit
hspec-experimental library: An experimental DSL for testing on top of Hspec
hspec-jenkins library: Jenkins-friendly XML formatter for Hspec
hspec-meta library and program: A version of Hspec which is used to test Hspec itself
hstest program: Runs tests via QuickCheck1 and HUnit; like quickCheck-script but uses GHC api
HTF library and program: The Haskell Test Framework
HUnit library: A unit testing framework for Haskell
HUnit-Diff library: Assertions for HUnit with difference reporting
hunit-gui library and program: A GUI testrunner for HUnit
hunit-parsec library: An HUnit Testable instance for Parsec parser unit tests.
hunit-rematch library: HUnit support for rematch
inspection-proxy program: A simple proxy for debugging plaintext protocols communication
IOSpec library: A pure specification of the IO monad.
lazysmallcheck library: A library for demand-driven testing of Haskell programs
nanospec library: A lightweight implementation of a subset of Hspec's API
pqc library: Parallel batch driver for QuickCheck
proctest library and program: An IO library for testing interactive command line programs
properties library: check quickCheck properties in real time.
quick-generator library: Generator random test data for QuickCheck
QuickCheck library: Automatic testing of Haskell programs
quickcheck-assertions library: HUnit like assertions for QuickCheck
quickcheck-instances library: Common quickcheck instances
quickcheck-io library: Use HUnit assertions as QuickCheck properties
quickcheck-poly library: Automating QuickCheck for polymorphic and overlaoded properties
quickcheck-properties library: QuickCheck properties for standard type classes.
quickcheck-rematch library: QuickCheck support for rematch
quickcheck-script program: Automated test tool for QuickCheck.
quickspec library: Equational laws for free
quicktest program: A reflective batch tester for Haskell.
SBench library: A benchmark suite for runtime and heap measurements over a series of inputs.
shelltestrunner program: A tool for testing command-line programs.
sloth library: Testing for minimal strictness
smallcheck library: A property-based testing library
sparsecheck library: A Logic Programming Library for Test-Data Generation
spoonutil library and program: Spoon's utilities. Simple testing and nice looking error reporting.
StrictBench library: Benchmarking code through strict evaluation
stringbuilder library: A writer monad for multi-line string literals
TBC library and program: Testing By Convention
tdd-util library: Utilities for TDD with test-framework, HUnit, and QuickCheck
test-framework library and program: Framework for running and organising tests, with HUnit and QuickCheck support
test-framework-golden library: Golden tests support for test-framework
test-framework-hunit library: HUnit support for the test-framework package.
test-framework-program library: Test framework support for running simple test programs.
test-framework-quickcheck library: QuickCheck support for the test-framework package.
test-framework-quickcheck2 library: QuickCheck2 support for the test-framework package.
test-framework-skip library: Functions for conveniently marking some of the tests in a suite as being skipped.
test-framework-smallcheck library: Support for SmallCheck tests in test-framework
test-framework-testing-feat library: A test framework provider for testing-feat
test-framework-th library: Automagically generate the HUnit- and Quickcheck-bulk-code using Template Haskell.
test-framework-th-prime library: Template Haskell for test framework
test-simple library: Simple Perl inspired testing
testing-feat library: Functional Enumeration of Abstract Types
testloop library: Quick feedback loop for test suites
testpack library: Test Utililty Pack for HUnit and QuickCheck
testrunner library: Easy unit test driver framework
torch library: Simple unit test library (or framework)
wai-test library: Unit test framework (built on HUnit) for WAI applications.
webdriver library: a Haskell client for the Selenium WebDriver protocol
yesod-test library: integration testing for WAI/Yesod Applications

Text

aeson library: Fast JSON parsing and encoding
aeson-pretty library and program: JSON pretty-printing library and command-line tool.
AhoCorasick library: Aho-Corasick string matching algorithm
ansi-wl-pprint library and program: The Wadler/Leijen Pretty Printer for colored ANSI terminal output
arff library: Generate Attribute-Relation File Format (ARFF) files
arx library and program: Archive execution tool.
ascetic library: Generic markup builder.
atto-lisp library: Efficient parsing and serialisation of S-Expressions.
AttoJson library: Simple lightweight JSON parser, generator & manipulator based on ByteString
attoparsec library: Fast combinator parsing for bytestrings and text
attoparsec-arff library: An ARFF file parser using Attoparsec
attoparsec-csv library: A parser for CSV files that uses Attoparsec
attoparsec-enumerator library: Pass input from an enumerator to an Attoparsec parser.
attoparsec-expr library: Port of parsec's expression parser to attoparsec.
attoparsec-text-enumerator library: (deprecated)
augur program: Renaming media collections in a breeze.
beautifHOL program: A pretty-printer for higher-order logic
bencode library: Parser and printer for bencoded data.
bibtex library and programs: Parse, format and processing BibTeX files
blaze-from-html program: Tool to convert HTML to BlazeHtml code.
blaze-html library: A blazingly fast HTML combinator library for Haskell
blaze-html-hexpat library: A hexpat backend for blaze-html.
blaze-html-truncate library: A truncator for blaze-html
blaze-markup library: A blazingly fast markup combinator library for Haskell
blaze-textual library: Fast rendering of common datatypes
BluePrintCSS library: Html document layout library.
Bookshelf program: A simple document organizer with some wiki functionality
boomerang library: Library for invertible parsing and printing
boxes library: 2D text pretty-printing library
Bravo library: Static text template generation library
bytestring-nums library and program: Parse numeric literals from ByteStrings.
bytestring-show library: Efficient conversion of values into readable byte strings.
bytestringparser library: Combinator parsing with Data.ByteString.Lazy
bytestringparser-temporary library: Combinator parsing with Data.ByteString.Lazy
bytestringreadp library: A ReadP style parser library for ByteString
case-insensitive library: Case insensitive string comparison
cassava library: A CSV parsing and encoding library
cassette library: A combinator library for simultaneously defining parsers and pretty printers.
cedict library and program: Convenient Chinese phrase & character lookup.
cereal-enumerator library: Deserialize things with cereal and enumerator
change-monger library and program: Parse VCS changelogs into ChangeLogs
charsetdetect library: Character set detection using Mozilla's Universal Character Set Detector
chunks library: Simple template library with static safety
citation-resolve library: convert document IDs such as DOI, ISBN, arXiv ID to bibliographic reference.
citeproc-hs library: A Citation Style Language implementation in Haskell
cjk library: Data about Chinese, Japanese and Korean characters and languages
clevercss library and program: A CSS preprocessor
clogparse library: Parse IRC logs such as the #haskell logs on tunes.org
crc16-table library: Compute CRC16 checksums using a lookup table.
cron library: Cron datatypes and Attoparsec parser
csv library: CSV loader and dumper
csv-conduit library and program: A flexible, fast, conduit-based CSV parser library for Haskell.
csv-nptools programs: A collection of CSV tools
data-pprint library: Prettyprint and compare Data values
data-textual library: Human-friendly textual representations.
derp-lib library: combinators based on parsing with derivatives (derp) package
detrospector program: Markov chain text generator
discount library: Haskell bindings to the discount Markdown library.
dotgen library and program: A simple interface for building .dot graph files.
double-conversion library: Fast conversion between double precision floating point and text
dtd library: Parse and render DTD files
dtd-text library: Parse and render XML DTDs
dtd-types library: Basic types for representing XML DTDs
ehaskell program: like eruby, ehaskell is embedded haskell.
email-validate library: Validating an email address string against RFC 5322
Encode library and programs: Encoding character data
epub library and program: EPUB E-Book construction support library
epub-metadata library: Library for parsing and manipulating EPUB files and OPF package data
expat-enumerator library: Enumerator-based API for Expat
expression-parser library: Generalization of parsec's expression parser.
feed library: Interfacing with RSS (v 0.9x, 2.x, 1.0) + Atom feeds.
feed-cli program: A simple command line interface for creating and updating feeds like RSS
fix-symbols-gitit library: Gitit plugin: Turn some Haskell symbols into pretty math symbols.
fixhs library and program: FIX (co)parser
Flippi program: Wiki
floatshow library: Alternative faster String representations for Double and Float, ...
flow2dot library and program: Library and binary to generate sequence/flow diagrams from plain text source
format library: Rendering from and scanning to format strings
frisby library: Linear time composable parser for PEG grammars.
frquotes library and program: Lexical extension for Quasi-Quotations using French-Quotes
GenericPretty library: A generic, derivable, haskell pretty printer.
gentlemark library: Gentle markup language
gnuidn library: Bindings for GNU IDN
graphtype program: A simple tool to illustrate dependencies between Haskell types
groom library: Pretty printing for well-behaved Show instances.
hack-contrib-press library: Hack helper that renders Press templates
hako library: A mako-like quasi-quoter template library
halipeto library: Haskell Static Web Page Generator
HandsomeSoup library: Work with HTML more easily in HXT
hastache library: Haskell implementation of Mustache templates
HaTeX library: The Haskell LaTeX library.
HaXml library and programs: Utilities for manipulating XML documents
Hayoo programs: The Hayoo! search engine for Haskell API search on hackage
hdiscount library: Haskell bindings to the Discount markdown library
hello program: Hello World, an example package
heredoc library: multi-line string / here document using QuasiQuotes
hexdump library: A library for forming hexdumps.
hgettext library and program: Bindings to libintl.h (gettext, bindtextdomain)
highlighter library and program: source code highlighting
highlighting-kate library and program: Syntax highlighting
hjpath library: XPath-like syntax for querying JSON
hjson library: JSON parsing library
hjson-query library: library for querying from JSON
hlatex library and program: A library to build valid LaTeX files
hmark library and program: A tool and library for Markov chains based text generation.
hmarkup library: Simple wikitext-like markup format implementation.
Holumbus-Searchengine library: A search and indexing engine.
hoodle-builder library: text builder for hoodle file format
hoodle-parser library: Hoodle file parser
HPath library and program: Extract Haskell declarations by name.
hprotoc library and program: Parse Google Protocol Buffer specifications
hpygments library: Highlight source code using Pygments
hpyrg program: pyrg utility done right
hs-bibutils library: Haskell bindings to bibutils, the bibliography conversion utilities.
hs-vcard library: Implements the RFC 2426 vCard 3.0 spec
HsHyperEstraier library: HyperEstraier binding for Haskell
HsSyck library: Fast, lightweight YAML loader and dumper
hstidy program: Takes haskell source on stdin, parses it, then prettyprints it to stdout.
HStringTemplate library: StringTemplate implementation in Haskell.
HStringTemplateHelpers library: Convenience functions and instances for HStringTemplate
html-conduit library: Parse HTML documents using xml-conduit datatypes.
html-minimalist library: Minimalist haskell html library
html-truncate library: A HTML truncator
html2hamlet program: HTML to Hamlet converter
hxt-charproperties library: Character properties and classes for XML and Unicode
hxt-regex-xmlschema library: A regular expression library for W3C XML Schema regular expressions
hxt-unicode library: Unicode en-/decoding functions for utf8, iso-latin-* and other encodings
hyphenate library: Text hyphenation algorithm
hyphenation library: Configurable Knuth-Liang hyphenation
i18n library: Internationalization for Haskell
iCalendar library: iCalendar data types, parser, and printer.
iconv library: String encoding conversion
idiii library and program: ID3v2 (tagging standard for MP3 files) library
idna library: Implements IDNA (RFC 3490).
illuminate library and program: A fast syntax highlighting library built with alex.
imbib programs: Minimalistic reference manager.
indentparser library and program: A parser for indentation based structures
indents library: indentation sensitive parser-combinators for parsec
inject library and program: A minimalistic template engine
Interpolation library: Multiline strings, interpolation and templating.
invertible-syntax library: Invertible syntax descriptions for both parsing and pretty printing.
ipprint library: Tiny helper for pretty-printing values in ghci console
iptables-helpers library and program: iptables rules parser/printer library
IPv6Addr library: Library to deal with IPv6 address text representations.
json-b library and program: JSON parser that uses byte strings.
json-tools programs: A collection of JSON tools
json-types library: Basic types for representing JSON
json2 library: Library provides support for JSON.
json2-types library: Defined JSON data types and function for renders JSON to string.
JSONb library and program: JSON parser that uses byte strings.
jspath library: Extract substructures from JSON by following a path.
karver library: A simple template engine, inspired by jinja2
kickass-torrents-dump-parser library: Parses kat.ph torrent dumps
latex library: Parse, format and process LaTeX files
layout library: Turn values into pretty text or markup
layout-bootstrap library: Template and widgets for Bootstrap2 to use with Text.Blaze.Html5
lazy-csv library and program: Efficient lazy parsers for CSV (comma-separated values).
ldif library and programs: The LDAP Data Interchange Format (LDIF) tools
liboleg library: An evolving collection of Oleg Kiselyov's Haskell modules
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
libxml-sax library: Bindings for the libXML2 SAX interface
libxslt library: Binding to libxslt
line2pdf library and program: Simple command-line utility to convert text into PDF
log2json library and program: Turn log file records into JSON.
maccatcher library and program: Obtain the host MAC address on *NIX and Windows.
magic library: Interface to C file/magic library
mainland-pretty library: Pretty printing designed for printing source code.
marked-pretty library and program: Pretty-printing library, with scoping, based on pretty-1.0.0.0
marxup library and program: Markup language preprocessor for Haskell
mbox library: Read and write standard mailbox files.
metadata library: metadata library for semantic web
mime-directory library: A library for parsing/printing the text/directory mime type.
MorseCode library: Morse code
mpppc library: Multi-dimensional parametric pretty-printer with color
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
nanoparsec library: An implementation of attoparsec-like parser around list-like
neat-interpolation library: A quasiquoter for neat and simple multiline text interpolation
nicify library and program: Pretty print the standard output of show for algebraic datatypes
nme library: Bindings to the Nyctergatis Markup Engine
noise library and program: A friendly language for graphic design
nptools programs: A collection of random tools
numerals library: Convert numbers to number words
numerals-base library: Convert numbers to number words
opentheory-char library and program: Unicode characters
opml library: Representing and handling OPML subscription information.
ot library: Real-time collaborative editing with Operational Transformation
ottparse-pretty program: Pretty-printer for Ott parse trees
PageIO library and program: Page-oriented extraction and composition library
pandoc library and programs: Conversion between markup formats
pandoc-types library: Types for representing a structured document
pappy program: Packrat parsing; linear-time parsers for grammars in TDPL.
para library: Text paragraph formatting
parsec-parsers library: Parsing instances for Parsec
parsers library: Parsing combinators
patience library: Patience diff and longest increasing subsequence
PCLT library: Extension to Show: templating, catalogizing, languages, parameters, etc.
pcre-less library: Nicer interface to regex-pcre.
pcre-light library: A small, efficient and portable regex library for Perl 5 compatible regular expressions
pcre-light-extra library: pcre-light extra functionality
pcre-utils library: Perl-like substitute and split for PCRE regexps.
pdf2line programs: Simple command-line utility to convert PDF into text
pdfinfo library: Wrapper around the pdfinfo command.
phonetic-code library: Phonetic codes: Soundex and Phonix
plat library: Simple templating library
playlists library and program: Library and executable for working with playlist files.
polyparse library: A variety of alternative parser combinator libraries.
portable-lines library: Alternative 'lines' implementation that understands CR-LF and CR
press library: Text template library targeted at the web / HTML generation
prettify library: Haskell2010 structured text formatting
pretty library: Pretty-printing library
pretty-class library: Extremely simple Pretty class
pretty-ncols library: A implementation of multi-column layout w/ Text.PrettyPrint
pretty-show library and program: Tools for working with derived `Show` instances and generic inspection of values.
prettyclass library: Pretty printing class similar to Show.
printf-mauke library: A Perl printf like formatter.
protocol-buffers library: Parse Google Protocol Buffer specifications
protocol-buffers-descriptor library: ...
pugs-hsregex library: Haskell PCRE binding
pugs-HsSyck library: Fast, lightweight YAML loader and dumper
punycode library: Encode unicode strings to ascii forms according to RFC 3492
QuasiText library: A QuasiQuoter for Text.
raw-strings-qq library: Raw string literals for Haskell.
readable library: Reading from Text and ByteString
regex-applicative library: Regex-based parsing with applicative interface
regex-base library: Replaces/Enhances Text.Regex
regex-compat library: Replaces/Enhances Text.Regex
regex-compat-tdfa library: Unicode Support version of Text.Regex, using regex-tdfa
regex-deriv library: ...
regex-dfa library: Replaces/Enhances Text.Regex
regex-genex library and program: From a regex, generate all possible strings it can match
regex-parsec library: Replaces/Enhances Text.Regex
regex-pcre library: Replaces/Enhances Text.Regex
regex-pcre-builtin library: Replaces/Enhances Text.Regex
regex-pderiv library: ...
regex-posix library: Replaces/Enhances Text.Regex
regex-posix-unittest program: Unit tests for the plaform's Posix regex library
regex-tdfa library: Replaces/Enhances Text.Regex
regex-tdfa-text library: Text interface for regex-tdfa
regex-tdfa-unittest program: Unit tests for the regex-tdfa
regex-tdfa-utf8 library: ...
regex-tre library: Replaces/Enhances Text.Regex
regex-xmlschema library: A regular expression library for W3C XML Schema regular expressions
regexchar library and program: A POSIX, extended regex-engine.
regexpr library: regular expression like Perl/Ruby in Haskell
regexpr-symbolic library: Regular expressions via symbolic manipulation
regexqq library: A quasiquoter for PCRE regexes.
relit library: Literal for regular expression
repr library: Render overloaded expressions to their textual representation.
repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB
RJson library: A reflective JSON serializer/parser.
roundtrip library: Bidirectional (de-)serialization
roundtrip-string library: Bidirectional (de-)serialization
roundtrip-xml library and program: Bidirectional (de-)serialization for XML.
rowrecord library: Build records from lists of strings, as from CSV files.
rss library: A library for generating RSS 2.0 feeds.
shell-escape library: Shell escaping library.
simple-config library: Simple config file parser generator
simple-tabular library: Simple tabular-text formatter
skypelogexport program: Export Skype chat logs to text files
snippet-extractor program: Extracts labeled snippets of code to files.
snowball library: Bindings to the Snowball library.
spelling-suggest library and programs: Spelling suggestion tool with library and command-line interfaces.
sphinx library: Haskell bindings to the Sphinx full-text searching daemon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
spreadsheet library and program: Read and write spreadsheets from and to CSV files in a lazy way
SpreadsheetML library: Write support for Excel's SpreadsheetML format
sssp library and program: HTTP proxy for S3.
ssv library and program: Comma-separated-value (CSV) read, show and write routines
stemmer library: Haskell bindings to the Snowball stemming library.
string-class library: String class library
stringable library: A Stringable type class, in the spirit of Foldable and Traversable
stringlike library: Transformations to several string-like types
strings library: Functions for working with strings, including Text, ByteString, etc.
stringsearch library: Fast searching, splitting and replacing of ByteStrings
subtitleParser library: A parser for .srt and .sub files
sundown library: Bindings to the sundown markdown library
Tablify program: Tool to render CSV into tables of various formats
tabular library: Two-dimensional data tables with rendering functions
tdoc library: TDoc is a typed document builder with support for (X)HTML
template library: Simple string substitution
texmath library and programs: Conversion of LaTeX math formulas to MathML or OMML.
text library: An efficient packed Unicode text type.
text-format library: Text formatting
text-format-simple library: Simple text formatting library.
text-icu library: Bindings to the ICU library
text-latin1 library: Latin-1 (including ASCII) utility functions
text-printer library: Abstract interface for text builders/printers.
text-xml-qq library: Quasiquoter for xml. XML DSL in Haskell.
thimk programs: Command-line spelling word suggestion tool
transf library and program: Text transformer and interpreter.
translate library: Haskell binding to Google's AJAX Language API for Translation and Detection
trifecta library: A modern parser combinator library with convenient diagnostics
twine library: very simple template language
txt2rtf program: Filter to convert plain text files to RTF
uhexdump program: hex dumper for UTF-8 text
unicode-names library: Unicode 3.2.0 character names
unicode-normalization library: Unicode normalization using the ICU library
unicode-properties library: Unicode 3.2.0 character properties
uri library: Library for working with URIs
uri-conduit library: Read and write URIs
URLb library: DEPRECATED A simple, liberal URL parser.
urldecode program: Decode percent-encoded strings.
uu-interleaved library: ...
uu-parsinglib library: Fast, online, error-correcting, monadic, applicative, merging, permuting, ...
uu-tc library: Haskell 98 parser combintors for INFOB3TC at Utrecht University
validate library: Validate
vcard library: A library for parsing/printing vCards from/to various formats.
vorbiscomment library: Reading of Vorbis comments from Ogg Vorbis files
wavesurfer library: Parse WaveSurfer files
wcwidth library and program: Native wcwidth.
weighted-regexp library and programs: Weighted Regular Expression Matcher
wikipedia4epub library and program: Wikipedia EPUB E-Book construction from Firefox history.
wl-pprint library: The Wadler/Leijen Pretty Printer
wl-pprint-extras library: A free monad based on the Wadler/Leijen pretty printer
wl-pprint-terminfo library: A color pretty printer with terminfo support
wl-pprint-text library: A Wadler/Leijen Pretty Printer for Text values
WordNet library: Haskell interface to the WordNet database
WordNet-ghc74 library: Haskell interface to the WordNet database
xformat library: Extensible, type-safe formatting with scanf- and printf-like functions
xhtml-combinators library: Fast and easy to use XHTML combinators.
xml library: A simple XML library.
xml-catalog library: Parse XML catalog files
xml-conduit-writer library: Warm and fuzzy creation of XML documents.
xml-hamlet library: Hamlet-style quasiquoter for XML content
xml-helpers library: Some useful helper functions for the xml library.
xml-monad library: Monadic extensions to the xml package.
xml-prettify library and program: Pretty print XML.
xml-types library: Basic types for representing XML
xml2json library and program: translate xml to json
xmlgen library and programs: Fast XML generation library
xmlhtml library: XML parser and renderer with HTML 5 quirks mode
xournal-builder library: text builder for xournal file format
xournal-parser library: Xournal file parser
xslt library: Binding to libxslt
yajl-enumerator library: Enumerator-based interface to YAJL, an event-based JSON implementation
YamlReference library and programs: YAML reference implementation
yeganesh programs: small dmenu wrapper
yst program: Builds a static website from templates and data in YAML or CSV files.
yuuko library and program: A transcendental HTML parser gently wrapping the HXT library
zampolit program: A tool for checking how much work is done on group projects.
zenc library: GHC style name Z-encoding and Z-decoding
Zwaluw library: Combinators for bidirectional URL routing

Text Recognition

antigate library: Interface for antigate.com captcha recognition API

Text.PrettyPrint

FPretty library: Efficient simple pretty printing combinators

Theorem Provers

bindings-yices library: Bindings to the Yices theorem prover
dedukti library and programs: A type-checker for the λΠ-modulo calculus.
hgen program: Random generation of modal and hybrid logic formulas
HTab program: Tableau based theorem prover for hybrid logics
hylolib library: Tools for hybrid logics related programs
hylotab program: Tableau based theorem prover for hybrid logics
hyloutils programs: Very small programs for hybrid logics
ivor library: Theorem proving library based on dependent type theory
logic-classes library and program: Framework for propositional and first order logic, theorem proving
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
mprover program: Simple equational reasoning for a Haskell-ish language
pesca program: Proof Editor for Sequent Calculus
sbv library and program: SMT Based Verification: Symbolic Haskell theorem prover using SMT solving.
scyther-proof program: Automatic generation of Isabelle/HOL correctness proofs for security protocols.
structural-induction library: Instantiate structural induction schemas for algebraic data types
tableaux program: An interactive theorem prover based on semantic tableaux
tamarin-prover program: The Tamarin prover for security protocol analysis.
tamarin-prover-term library: Term manipulation library for the tamarin prover.
tamarin-prover-theory library: Term manipulation library for the tamarin prover.
tamarin-prover-utils library: Utility library for the tamarin prover.
theoremquest library: A common library for TheoremQuest, a theorem proving game.
theoremquest-client program: A simple client for the TheoremQuest theorem proving game.
toysolver library and programs: Assorted decision procedures for SAT, Max-SAT, PB, MIP, etc
yices-easy library: Simple interface to the Yices SMT (SAT modulo theories) solver.
yices-painless library: An embedded language for programming the Yices SMT solver
z3 library: Bindings for the Z3 Theorem Prover
zeno program: An automated proof system for Haskell programs

Time

ebeats library: Time in ebeats
rdtsc-enolan library: Binding to sources of high-efficiency, high-precision, ...
rfc3339 library: Parse and display time according to RFC3339
time-http library: Parse and format HTTP/1.1 Date and Time strings
timerep library: Parse and display time according to some RFCs (RFC3339, RFC2822)

Tools

cabal-db program: cabal-db
ghc-man-completion program: Generate a bash completion from the GHC manpage
gsmenu program: A visual generic menu
gt-tools programs: Console and GUI interface for Google Translate service
hascal library and program: A minimalistic but extensible and precise calculator
iptadmin program: web-interface for iptables
json-tools programs: A collection of JSON tools
log2json library and program: Turn log file records into JSON.
newt library and programs: A trivially simple app to create things from simple templates.
nicify library and program: Pretty print the standard output of show for algebraic datatypes
recursive-line-count program: Count lines in files and display them hierarchically
RollingDirectory program: Limits the size of a directory's contents

Trace

edentv program: A Tool to Visualize Parallel Functional Program Executions
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-events-parallel library and program: Library and tool for parsing .eventlog files from parallel GHC
hood library: Debugging by observing in place
hpc-strobe library: Hpc-generated strobes for a running Haskell program
hpc-tracer program: Tracer with AJAX interface
linux-perf library and programs: Read files generated by perf on Linux
threadscope program: A graphical tool for profiling parallel Haskell programs.

Transformation

hermit library and program: Haskell Equational Reasoning Model-to-Implementation Tunnel

Tree

repr-tree-syb library: Tree representation and pretty-printing of data structures based on SYB

Type Inference

ml-w library and program: Minimal ML language to to demonstrate the W type infererence algorithm.

Type System

data-type library: Basic type wrangling types and classes
eq library: Leibnizian equality
kinds library: Emulation of subkinds and subkind polymorphism
names library: Type level names.
natural-number library: Natural numbers tagged with a type-level representation of the number.
tfp library and program: Type-level integers, booleans, lists using type families
tfp-th library: Template-Haskell code for tfp
type-booleans library: Type-level booleans via type-families
type-cereal library: Type-level serialization of type constructors
type-digits library: Arbitrary-base type-level digits
type-eq library: Type equality evidence you can carry around
type-functions library: Emulation of type-level functions
type-level-natural-number library: Simple, Haskell 2010-compatible type level natural numbers
type-level-natural-number-induction library: High-level combinators for performing inductive operations.
type-level-natural-number-operations library: Basic operations on type-level natural numbers.
type-level-numbers library: Type level numbers implemented using type families.
type-ord library: Type-level comparison operator
type-ord-spine-cereal library: Generic type-level comparison of types
type-settheory library: Sets and functions-as-relations in the type system
type-spine library: A spine-view on types

Typography

dvi-processing library: Read/write DVI and TFM file
fmark program: A Friendly Markup language without syntax.
layout library: Turn values into pretty text or markup
typography-geometry library: Drawings for printed text documents

UI

WL500gPControl programs: A simple command line tools to control the Asus WL500gP router

Unification

unification-fd library: Simple generic unification algorithms.

Uniform

uni-events library: Event handling for the uniform workbench
uni-posixutil library: Posix utilities for the uniform workbench
uni-reactor library: Reactors for the uniform workbench
uni-util library: Utilities for the uniform workbench

User Interfaces

ansi-terminal library and program: Simple ANSI terminal support, with Windows compatibility
ansi-wl-pprint library and program: The Wadler/Leijen Pretty Printer for colored ANSI terminal output
binding-core library: Data Binding
binding-gtk library: Data Binding in Gtk2Hs
binding-wx library: Data Binding in WxHaskell
concurrentoutput library: Ungarble output from several threads
crystalfontz library: Control Crystalfontz LCD displays.
editline library: Bindings to the editline library (libedit).
fenfire programs: Graph-based notetaking system
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
GtkGLTV library: OpenGL support for Gtk-based GUIs for Tangible Values
GtkTV library: Gtk-based GUIs for Tangible Values
GuiTV library: GUIs for Tangible Values
Hashell program: Simple shell written in Haskell
haskeline library: A command-line interface for user input, written in Haskell.
haskeline-class library: Class interface for working with Haskeline
HCL library and program: High-level library for building command line interfaces.
hs-fltk library: Binding to GUI library FLTK
hscurses-fish-ex program: hscurses swimming fish example
lambdacat library and program: Webkit Browser
nanocurses library: Simple Curses binding
ncurses library: Modernised bindings to GNU ncurses
phooey library: Functional user interfaces
progress library: Simple progress tracking & projection library
proplang library: A library for functional GUI development
Shellac library: A framework for creating shell envinronments
Shellac-compatline library: "compatline" backend module for Shellac
Shellac-editline library: Editline backend module for Shellac
Shellac-haskeline library: Haskeline backend module for Shellac
Shellac-readline library: Readline backend module for Shellac
stylized library: Ways to output stylized text on ANSI consoles.
terminal-progress-bar library: A simple progress bar in the terminal
terminfo library: Haskell bindings to the terminfo library.
vty library and program: A simple terminal UI library
vty-ui library and programs: An interactive terminal user interface library for Vty
vty-ui-extras library: Extra vty-ui functionality not included in the core library
wizards library: High level, generic library for interrogative user interfaces
wx library: wxHaskell
wxc library: wxHaskell C++ wrapper
wxcore library: wxHaskell core
WXDiffCtrl library: WXDiffCtrl
wxdirect library and program: helper tool for building wxHaskell
xtc library: eXtended & Typed Controls for wxHaskell.
zipedit library: Create simple list editor interfaces

User-interface

hscurses library: NCurses bindings for Haskell

Utilities

c2hsc program: Convert C API header files to .hsc and .hsc.helper.c files
hx library: Haskell extras (missing utility functions).
nicify library and program: Pretty print the standard output of show for algebraic datatypes
una program: Universal un-archiver utility

Utility

git-annex program: manage files with git, without checking their contents into git
github-backup program: backs up everything github knows about a repository, to the repository
gnome-desktop program: Randomly set a picture as the GNOME desktop background
hascal library and program: A minimalistic but extensible and precise calculator
haskades program: Utility to generate bindings for BlackBerry Cascades
herbalizer program: HAML to ERB translator
hinduce-missingh library: Utility functions
JYU-Utils library: Some utility functions for JYU projects
mbox-tools programs: A collection of tools to process mbox files
mustache2hs program: Utility to generate Haskell code from Mustache templates
not-in-base library: Useful utility functions that only depend on base.
rosso library: General purpose utility library
route-generator program: Utility to generate routes for use with yesod-routes
strings library: Functions for working with strings, including Text, ByteString, etc.
Webrexp library and program: Regexp-like engine to scrap web data

Utils

bitly-cli program: A command line tool to access bit.ly URL shortener.
CabalSearch program: Search cabal packages by name
cblrepo program: Tool to maintain a database of CABAL packages and their dependencies
clean-home program: Keep your home dir clean by finding old conf files
cltw program: Command line Twitter utility
confsolve program: A command line tool for resolving conflicts of file synchronizers.
csv-nptools programs: A collection of CSV tools
data-util library: utilities for handle data
ecu programs: Tools for automotive ECU development.
EditTimeReport program: Query language and report generator for edit logs.
email-validator program: Perform basic syntax and deliverability checks on email addresses.
fordo program: Run a command on files with magic substituion support (sequencing and regexp)
fuzzytime library and program: A 'ten past six' style clock
Geodetic library: Geodetic calculations
GPX library: Parse GPX files
hascal library and program: A minimalistic but extensible and precise calculator
hath program: Hath manipulates network blocks in CIDR notation.
hp2any-core library: Heap profiling helper library
hp2any-graph library and programs: ...
hp2any-manager program: A utility to visualise and compare heap profiles.
htags program: A Haskell98 parsing tags program similar to ctags.
hunp program: Unpacker tool with DWIM
jarfind library and program: Tool for searching java classes, members and fields in classfiles and JAR archives
json-tools programs: A collection of JSON tools
katt program: Client for the Kattis judge system.
kevin program: a dAmn ↔ IRC proxy
lat program: Tool to track security alerts on LWN
log2json library and program: Turn log file records into JSON.
minirotate program: Minimalistic file rotation utility
modsplit library and program: Haskell source splitter driven by special comments.
nptools programs: A collection of random tools
OSM library: Parse OpenStreetMap files
PastePipe program: CLI for pasting to hpaste.org
pb program: pastebin command line application
pdfsplit program: split two-column PDFs, so there is one column per page
plumbers library: Pointless plumbing combinators
pointless-fun library: Some common point-free combinators.
practice-room program: Practice Room
Printf-TH library
readline-statevar library: Readline with variables (setX/getY) wrapped in state vars
revdectime program: A French revolutionary decimal time (metric) clock
rezoom program: Github resume generator
sorty program: Sort lines per file size
squeeze program: A file-packing application.
subtitles program: Modify SRT subtitle files.
temporary library: Portable temporary file and directory support for Windows and Unix, ...
todos library and program: Easy-to-use TODOs manager.
toolshed library and program: Utilities used by other packages.
unscramble program: Solve Boggle-like word games
unusable-pkg program: Utility construction of the graph depending unusable packages.
up program: Generates pathnames to up directories
wtk library: Wojcik Tool Kit
wtk-gtk library: GTK tools within Wojcik Tool Kit
Xec program: Gtk command launcher with identicon

Visual Programming

sifflet program: A simple, visual, functional programming language.
sifflet-lib library: Library of modules shared by sifflet and its tests and its exporters.

Web

accentuateus library: A Haskell implementation of the Accentuate.us API.
acme-http library and programs: fastest Haskell PONG server in the world
adobe-swatch-exchange library and programs: parse Adobe Swatch Exchange files and (optionally) output .css files with the colors
aeson library: Fast JSON parsing and encoding
aeson-pretty library and program: JSON pretty-printing library and command-line tool.
aeson-smart library: Smart derivation of Aeson instances
Ansi2Html program: Convert ANSI Terminal Sequences to nice HTML markup
authenticate library: Authentication methods for Haskell web applications.
authenticate-kerberos library: Authentication methods for Haskell web applications.
authenticate-ldap library: LDAP authentication for Haskell web applications.
authenticate-oauth library: Library to authenticate with OAuth for Haskell web applications.
awesomium library: High-level Awesomium bindings.
awesomium-glut library: Utilities for using Awesomium with GLUT.
awesomium-raw library: Low-level Awesomium bindings.
aws library and programs: Amazon Web Services (AWS) for Haskell
bamboo library: A blog engine on Hack
bamboo-launcher program: bamboo-launcher
bamboo-plugin-highlight library: A highlight middleware
bamboo-plugin-photo library: A photo album middleware
bamboo-theme-blueprint library: bamboo blueprint theme
bamboo-theme-mini-html5 library: bamboo mini html5 theme
barley program: A web based environment for learning and tinkering with Haskell
base58address library: Parsing and serialization for Base58 addresses (Bitcoin and Ripple)
bird library and program: A simple, sinatra-inspired web framework.
Bitly library: A library to access bit.ly URL shortener.
bitly-cli program: A command line tool to access bit.ly URL shortener.
blaze-html-contrib library: Some contributions to add handy things to blaze html.
blogination library and program: Very simple static blog software
BlogLiterately library and program: A tool for posting Haskelly articles to blogs
BlogLiterately-diagrams library and program: Include images in blog posts with inline diagrams code
BluePrintCSS library: Html document layout library.
board-games library and program: Three games for inclusion in a web server
botpp library and program: Build tool for Lambdabot
Buster program: Hits a set of urls periodically to bust caches
campfire library: Haskell implementation of the Campfire API
cascading library: DSL for HTML CSS (Cascading Style Sheets)
cassava library: A CSV parsing and encoding library
cgi-utils library: Simple modular utilities for CGI/FastCGI (sessions, etc.)
charade library and program: Rapid prototyping websites with Snap and Heist
chu2 library: FFI for Chu2 Agda Web Server Interface
CHXHtml library: A W3C compliant (X)HTML generating library
clay library: CSS preprocessor as embedded Haskell.
clientsession library: Securely store session data in a client-side cookie.
codepad library: Submit and retrieve paste output from CodePad.org.
cookie library: HTTP cookie parsing and rendering
couchdb-enumerator library: Couch DB client library using http-enumerator and aeson
cqrs-example program: Example for cqrs package
css-text library: CSS parser and renderer.
curl-aeson library: Communicate with HTTP service using JSON
curlhs library: bindings to libcurl, the multiprotocol file transfer library
daemonize-doublefork library: Start background daemons by double-forking
darcsden programs: Darcs repository UI and hosting/collaboration app.
DarcsHelpers library: Code used by Patch-Shack that seemed sensible to open for reusability
DAV library and program: RFC 4918 WebDAV support
delicious library: Accessing the del.icio.us APIs from Haskell (v2)
dgs library: Haskell front-end for DGS' bot interface
digestive-functors library: A practical formlet library
digestive-functors-aeson library: Run digestive-functors forms against JSON
digestive-functors-blaze library: Blaze frontend for the digestive-functors library
digestive-functors-happstack library: Happstack backend for the digestive-functors library
digestive-functors-heist library: Heist frontend for the digestive-functors library
digestive-functors-hsp library: HSP support for digestive-functors
digestive-functors-snap library: Snap backend for the digestive-functors library
dingo-core library: Dingo is a Rich Internet Application platform based on the Warp web server.
dingo-example program: Dingo Example
dingo-widgets library: Dingo Widgets
doc-review programs: Document review Web application, like http://book.realworldhaskell.org/
DOM library: DOM Level 2 bindings for the WebBits package.
dom-selector library: DOM traversal by CSS selectors for xml-conduit package
elm-yesod library: The Elm language Yesod compatibility module.
esotericbot library and program: Esotericbot is a sophisticated, lightweight IRC bot.
ety library and program: Random etymology online entry.
extemp program: automated printing for extemp speakers
factual-api library: A driver for the Factual API
fay-uri library: Persistent FFI bindings for using jsUri in Fay
fb library: Bindings to Facebook's API.
fb-persistent library: Provides Persistent instances to Facebook types.
fckeditor library: Server-Side Integration for FCKeditor
feed-cli program: A simple command line interface for creating and updating feeds like RSS
feed2twitter library and program: Send posts from a feed to Twitter
FermatsLastMargin program: Annotate ps and pdf documents
ffeed library and programs: Haskell binding to the FriendFeed API
fields-json library: Abusing monadic syntax JSON objects generation.
Finance-Quote-Yahoo library: Obtain quote data from finance.yahoo.com
Finance-Treasury library: Obtain Treasury yield curve data
flickr library and programs: Haskell binding to the Flickr API
follower program: Follow Tweets anonymously
frame library and program: A simple web framework.
frame-markdown library: A markdown to Frame GUI writer for Pandoc
freesound library and program: Access the Freesound Project database
friendly-time library: Print time information in friendly ways
gc-monitoring-wai library: a wai application to show GHC.GCStats
gentlemark library: Gentle markup language
getemx program: Fetch from emusic using .emx files
ghclive library and program: Interactive Haskell interpreter in a browser.
gist program: A reliable command-line client for gist.github.com
github-post-receive program: github web hooks server
google-html5-slide program: Google HTML5 Slide generator
googleplus library: Haskell implementation of the Google+ API v1
gravatar library: Look up gravatar image urls by email address
hack library: a Haskell Webserver Interface
hack-contrib library: Hack contrib
hack-contrib-press library: Hack helper that renders Press templates
hack-frontend-happstack library: hack-frontend-happstack
hack-handler-epoll library: hack handler implementation using epoll
hack-handler-evhttp library: Hack EvHTTP (libevent) Handler
hack-handler-happstack library: Hack Happstack server handler
hack-handler-hyena library: Hyena hack handler
hack-handler-kibro library: Hack Kibro handler
hack2 library: a Haskell Webserver Interface (V2)
hack2-contrib library: Hack2 contrib
hack2-contrib-extra library: Hack2 contrib extra
hack2-handler-happstack-server library: Hack2 Happstack server handler
hack2-handler-mongrel2-http library: Hack2 Mongrel2 HTTP handler
hack2-handler-snap-server library: Hack2 Snap server handler
hack2-handler-warp library: Hack2 warp handler
hack2-interface-wai library: Hack2 interface of WAI
hackage2twitter program: Send new Hackage releases to Twitter
haggis library and program: A static site generator with blogging/comments support
hails library and program: Multi-app web platform framework
hakismet library: Akismet spam protection library
hakyll library and program: A static website compiler library
hakyll-agda library: Wrapper to integrate literate Agda files with Hakyll
hakyll-blaze-templates library: Blaze templates for Hakyll
hakyll-contrib library and program: Extra modules for the hakyll website compiler
hakyll-contrib-links library: A hakyll library that helps maintain a separate links database.
hakyll-convert library and programs: Convert from other blog engines to Hakyll.
hamlet library: Haml-like template files that are compile-time checked
happs-hsp-template library: Utilities for using HSP templates in HAppS applications.
happs-tutorial program: A Happstack Tutorial that is its own web 2.0-type demo.
happstack library and program: The haskell application server stack + code generation
happstack-auth library: A Happstack Authentication Suite
happstack-authenticate library: Happstack Authentication Library
happstack-clientsession library: client-side session data
happstack-contrib library and program: Web related tools and services.
happstack-dlg library: Cross-request user interactions for Happstack
happstack-fastcgi library: Happstack extension for use with FastCGI.
happstack-hamlet library: Support for Hamlet HTML templates in Happstack
happstack-heist library: Support for using Heist templates in Happstack
happstack-hsp library: Support for using HSP templates in Happstack
happstack-hstringtemplate library: Support for using HStringTemplate in Happstack
happstack-jmacro library: Support for using JMacro with Happstack
happstack-lite library: Happstack minus the useless stuff
happstack-monad-peel library: monad-peel instances for Happstack types
happstack-plugins library: The haskell application server stack + reload
happstack-server library: Web related tools and services.
happstack-server-tls library: extend happstack-server with https:// support (TLS/SSL)
happstack-static-routing library: Support for static URL routing with overlap detection for Happstack.
happstack-yui library: Utilities for using YUI3 with Happstack.
haskoon library: Web Application Abstraction
haskoon-httpspec library: Integrating HttpSpec with Haskoon
haskoon-salvia library: Integrating HttpSpec with Haskoon
haste program: A universal pastebin tool, written in Haskell.
hawitter program: A twitter client for GTK+. Beta version.
Hawk library: Haskell Web Application Kit
hbro library and program: Minimal KISS compliant browser
hbro-contrib library: Third-party extensions to hbro.
hcheat library: A collection of code cheatsheet
hdigest library: Server-side HTTP Digest (RFC2617) in the CGI monad
heist library: An Haskell template system supporting both HTML5 and XML.
heist-aeson library: Use JSON directly from Heist templates.
heist-async library: Adding support for asynchronous updates ("AJAX") with heist
heroku library: helpers for deploying to Heroku
hissmetrics library: Unofficial API bindings to KISSmetrics.
HJScript library: HJScript is a Haskell EDSL for writing JavaScript programs.
hjsmin library: Haskell implementation of a javascript minifier
hlongurl library and program: Library and utility interfacing to longurl.org
hpaste program: An online pastebin, written in Haskell.
hpasteit program: A command-line client for hpaste.org
hquery library: A query language for transforming HTML5
hs-twitter library: Haskell binding to the Twitter API
hS3 library and program: Interface to Amazon's Simple Storage Service (S3)
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsp library: Haskell Server Pages is a library for writing dynamic server-side web pages.
hsp-cgi library: Facilitates running Haskell Server Pages web pages as CGI programs.
hsx-jmacro library: hsx+jmacro support
hsx-xhtml library: XHTML utilities to use together with HSX.
html library: HTML combinator library
html-conduit library: Parse HTML documents using xml-conduit datatypes.
html-kure library: HTML rewrite engine, using KURE.
http-accept library: Functions for working with HTTP Accept headers
http-attoparsec library: Attoparsec parsers for http-types.
http-conduit library: HTTP client package with conduit interface and HTTPS support.
http-conduit-browser library: Browser interface to the http-conduit package
http-conduit-downloader library: HTTP downloader tailored for web-crawler needs.
http-date library: HTTP Date parser/formatter
http-proxy library: A library for writing HTTP and HTTPS proxies
http-reverse-proxy library: Reverse proxy HTTP requests, either over raw sockets or with WAI
http-streams library: An HTTP client using io-streams
http-types library: Generic HTTP types for Haskell (for both client and server code).
httpd-shed library and program: A simple web-server with an interact style API
httpspec library: Specification of HTTP request/response generators and parsers
hweblib library: Haskell Web Library
hxweb library: Minimal webframework using fastcgi, libxml2 and libxslt.
hyperdrive library and program: a fast, trustworthy HTTP(s) server built
hyperpublic library: A thin wrapper for the Hyperpublic API
ig library: Bindings to Instagram's API.
imgurder library and program: Uploader for Imgur
imm library and program: Retrieve RSS/Atom feeds and write one mail per new item in a maildir.
iptadmin program: web-interface for iptables
isohunt library: Bindings to the isoHunt torrent search API
ivy-web library: A lightweight web framework
jmacro-rpc-happstack library: Happstack backend for jmacro-rpc
jmacro-rpc-snap library: Snap backend for jmacro-rpc
jonathanscard library: An implementation of the Jonathan's Card API.
json library: Support for serialising Haskell to and from JSON
json2yaml program: Utility to convert a file from JSON to YAML format.
kansas-comet library: A JavaScript push mechanism based on the comet idiom
keter library and program: Web application deployment manager, focusing on Haskell web frameworks
kibro library and program: Web development framework.
kontrakcja-templates library: Utilities for working with many HStringTemplate templates from files
lambdabot library and program: Lambdabot is a development tool and advanced IRC bot
lambdabot-utils library: Utility libraries for the advanced IRC bot, Lambdabot
lambdaFeed program: RSS 2.0 feed generator
leaf program: A simple portfolio generator
lighttpd-conf library: Lighttpd configuration file tools.
lighttpd-conf-qq library: A QuasiQuoter for lighttpd configuration files.
LinkChecker program: Check a bunch of local html files for broken links
loli library: A minimum web dev DSL in Haskell
lucienne programs: Server side feed aggregator/reader
mahoro program: ImageBoards to XMPP gate
maid program: A simple static web server
markdown library: Convert Markdown to HTML, with XSS protection
markdown-kate library: Convert Markdown to HTML, with XSS protection
mathblog programs: A program for creating and managing a static weblog with LaTeX math and function graphs
mathgenealogy program: Discover your (academic) ancestors!
mediawiki library and programs: Interfacing with the MediaWiki API
metadata library: metadata library for semantic web
MFlow library: continuation-based Web framework without continuations.
mighttpd2 programs: High performance web server on WAI/warp
miku library: A minimum web dev DSL in Haskell
mime-mail-ses library: Send mime-mail messages via Amazon SES
mime-types library: Basic mime-type handling types and functions
moe library: html with style
mohws library and programs: Modular Haskell Web Server
mongrel2-handler library: Mongrel2 Handler Library
monoid-owns library: a practical monoid implementation
mysnapsession library: Sessions and continuations for Snap web apps
mysnapsession-example programs: Example projects using mysnapsession
named-formlet library: A simple formlet library with named formlets.
nemesis library: a task management tool for Haskell
nemesis-titan library: ...
network-pgi library: Library for writing PGI applications
nikepub program: Command line utility publishes Nike+ runs on blogs and Twitter
notmuch-web library and program: A web interface to the notmuch email indexer
ohloh-hs library and program: Interface to the Ohloh API
on-a-horse library: "Haskell on a Horse" - A combinatorial web framework
opml library: Representing and handling OPML subscription information.
orc library and program: Orchestration-style co-ordination EDSL
orchid library: Haskell Wiki Library
orchid-demo program: Haskell Wiki Demo
panda library: A simple static blog engine
partial-uri library: Datatype for passing around unresolved URIs.
pastis library: Interface to the past.is URL shortening service
path-pieces library: Components of paths.
piki program: Yet another text-to-html converter
plat library: Simple templating library
press library: Text template library targeted at the web / HTML generation
primula-board program: ImageBoard on Happstack and HSP
primula-bot program: Jabber-bot for primula-board ImageBoard
pubsub library and programs: A library for Google/SixApart pubsub hub interaction
punycode library: Encode unicode strings to ascii forms according to RFC 3492
rallod library: '$' in reverse.
raven-haskell-scotty library: Sentry http interface for Scotty web server.
rdioh library and programs: A Haskell wrapper for Rdio's API.
redHandlers library: Monadic HTTP request handlers combinators to build a standalone web apps.
reform library: reform is an HTML form generation and validation library
reform-blaze library: Add support for using blaze-html with Reform
reform-happstack library: Happstack support for reform.
reform-hsp library: Add support for using HSP with Reform
regular-web library: Generic programming for the web
restful-snap library
RESTng library: A framework for writing RESTful applications.
rfc3339 library: Parse and display time according to RFC3339
robots-txt library: Parser for robots.txt
rpc-framework library and program: a remote procedure call framework
salvia library: Modular web application framework.
salvia-demo library and programs: Demo Salvia servers.
salvia-extras library: Collection of non-fundamental handlers for the Salvia web server.
salvia-protocol library: Salvia webserver protocol suite supporting URI, HTTP, Cookie and MIME.
salvia-sessions library: Session support for the Salvia webserver.
salvia-websocket library: Websocket implementation for the Salvia Webserver.
scotty library: Haskell web framework inspired by Ruby's Sinatra, using WAI and Warp
selenium library: Test web applications through a browser.
servius program: Serve Shakespearean templates via Warp
shakespeare library: A toolkit for making compile-time interpolated templates
shakespeare-css library: Stick your haskell variables into css at compile time.
shakespeare-i18n library: A type-based approach to internationalization.
shakespeare-js library: Stick your haskell variables into javascript/coffeescript at compile time.
shakespeare-text library: Interpolation with quasi-quotation: put variables strings
shorten-strings library: Shorten a variety of string-like types adding ellipsis
shpider library: Web automation library in Haskell.
simple library and program: A minimalist web framework for the WAI server interface
simple-css library: simple binding of css and html
smartword programs: Web based flash card for Word Smart I and II vocabularies
snap library and program: Top-level package for the Snap Web Framework
snap-app library: Simple modules for writing apps with Snap, abstracted from hpaste.
snap-auth-cli program: Command-line tool to manage Snap AuthManager database
snap-core library: Snap: A Haskell Web Framework (core interfaces and types)
snap-extras library: A collection of useful helpers and utilities for Snap web applications.
snap-loader-dynamic library: Snap: A Haskell Web Framework: dynamic loader
snap-loader-static library: Snap: A Haskell Web Framework: static loader
snap-server library: A fast, iteratee-based, epoll-enabled web server for the Snap Framework
snaplet-acid-state library: acid-state snaplet for Snap Framework
snaplet-actionlog library: Generic action log snaplet for the Snap Framework
snaplet-coffee library: CoffeeScript for Snap, auto-compilation and pre-compilation.
snaplet-environments library: ...
snaplet-fay library: Fay integration for Snap with request- and pre-compilation.
snaplet-hdbc library: HDBC snaplet for Snap Framework
snaplet-i18n library: snaplet-i18n
snaplet-mongoDB library: Snap Framework MongoDB support as Snaplet
snaplet-mongodb-minimalistic library: Minimalistic MongoDB Snaplet.
snaplet-oauth library: snaplet-oauth
snaplet-persistent library: persistent snaplet for the Snap Framework
snaplet-postgresql-simple library: postgresql-simple snaplet for the Snap Framework
snaplet-recaptcha library and program: A ReCAPTCHA verification snaplet with connection sharing.
snaplet-redis library: Redis support for Snap Framework
snaplet-redson library: CRUD for JSON data with Redis storage
snaplet-sqlite-simple library: sqlite-simple snaplet for the Snap Framework
snaplet-tasks library: ...
snaplet-typed-sessions library: Typed session snaplets and continuation-based programming for the Snap web framework
soap library: SOAP client tools
sort-by-pinyin library: Sort simplified Chinese by PinYin
source-code-server program: The server backend for the source code iPhone app
spata library: brainless form validation
spike program: Experimental web browser
static-resources library: JavaScript and Css files concat for http optimization. Now with LESS suppor.
stripe library: A Haskell implementation of the Stripe API.
sunroof-compiler library: Monadic Javascript Compiler
sunroof-examples programs: Tests for Sunroof
sunroof-server library: Monadic Javascript Compiler - Server Utilities
tablestorage library: Azure Table Storage REST API Wrapper
tag-stream library: streamlined html tag parser
tagstream-conduit library: streamlined html tag parser
tdoc library: TDoc is a typed document builder with support for (X)HTML
template-hsml library: Haskell's Simple Markup Language
time-http library: Parse and format HTTP/1.1 Date and Time strings
time-w3c library and program: Parse, format and convert W3C Date and Time
timerep library: Parse and display time according to some RFCs (RFC3339, RFC2822)
TinyURL library: Use TinyURL to compress URLs
tnet library: Library for encoding/decoding TNET strings for PGI
twitter-enumerator library: Twitter API package with enumerator interface and Streaming API support.
ua-parser library: Port of ua-parser in Haskell
uploadcare library: Haskell client for Uploadcare.
uri-template library and program: URI template library for Haskell
url library: A library for working with URLs.
url-generic library: Parse/format generic key/value URLs from record data types.
UrlDisp library: Url dispatcher. Helps to retain friendly URLs in web applications.
urlencoded library and program: Generate or process x-www-urlencoded data
validate library: Validate
VKHS library and program: Provides access to Vkontakte social network via public API
wai library: Web Application Interface.
wai-app-file-cgi library: File/CGI/Rev Proxy App of WAI
wai-app-static library: WAI application for static serving
wai-dispatch library: Nice wrapper around yesod-routes for use with WAI
wai-eventsource library: WAI support for server-sent events
wai-extra library: Provides some basic WAI handlers and middleware.
wai-frontend-monadcgi library: Run CGI apps on WAI.
wai-handler-devel library and programs: WAI server that automatically reloads code after modification.
wai-handler-fastcgi library: Wai handler to fastcgi
wai-handler-launch library: Launch a web app in the default browser.
wai-handler-scgi library: Wai handler to SCGI
wai-handler-webkit library: Turn WAI applications into standalone GUIs using QtWebkit.
wai-hastache library: Nice wrapper around hastache for use with WAI
wai-lite library: ...
wai-logger library: A logging system for WAI
wai-logger-prefork library: A logging system for preforked WAI apps
wai-middleware-cache library: Caching middleware for WAI.
wai-middleware-cache-redis library: Redis backend for wai-middleware-cache
wai-middleware-catch library: Wai error catching middleware
wai-middleware-headers library: cors and addHeaders for WAI
wai-middleware-route library: Wai dispatch middleware
wai-middleware-static library: WAI middleware that intercepts requests to static files.
wai-router library: Provides basic routing on URL paths for WAI.
wai-session library: Flexible session middleware for WAI
wai-session-clientsession library: Session store based on clientsession
wai-session-tokyocabinet library: Session store based on Tokyo Cabinet
wai-static-pages library: generate static html pages from a WAI application
wai-test library: Unit test framework (built on HUnit) for WAI applications.
wai-util library: Collection of utility functions for use with WAI
wai-websockets library and program: Provide a bridge betweeen WAI and the websockets package.
warp library: A fast, light-weight web server for WAI applications.
warp-static program: Static file server based on Warp and wai-app-static
warp-tls library: HTTP over SSL/TLS support for Warp via the TLS package
WashNGo library and programs: WASH is a family of EDSLs for programming Web applications in Haskell.
web-css library: Simple functions for CSS.
web-fpco library: Wrappers for web frameworks to ease usage with the FP Complete environment.
web-mongrel2 library: Bindings for the Mongrel2 web server.
web-plugins library: dynamic plugin system for web applications
web-routes library: Library for maintaining correctness and composability of URLs within an application.
web-routes-boomerang library: Library for maintaining correctness and composability of URLs within an application.
web-routes-happstack library: Adds support for using web-routes with Happstack
web-routes-hsp library: Adds XMLGenerator instance for RouteT monad
web-routes-quasi library and program: ...
web-routes-regular library: Library for maintaining correctness of URLs within an application.
web-routes-th library: Support for deriving PathInfo using Template Haskell
web-routes-wai library: Library for maintaining correctness of URLs within an application.
WebCont library: Continuation based web programming for Happstack
webdriver library: a Haskell client for the Selenium WebDriver protocol
webwire library: Functional reactive web framework
windowslive library and program: Implements Windows Live Web Authentication and Delegated Authentication
xhtml library: An XHTML combinator library
xhtml-combinators library: Fast and easy to use XHTML combinators.
xing-api library and programs: Wrapper for the XING API, v1.
xml-to-json program: Simple command line tool for converting XML files to json
xss-sanitize library: sanitize untrusted HTML to prevent XSS attacks
Yablog program: A simple blog engine powered by Yesod.
yackage programs: Personal Hackage replacement for testing new packages.
yahoo-web-search library: Yahoo Web Search Services
yaml library: Support for parsing and rendering YAML documents.
yesod library: Creation of type-safe, RESTful web applications.
yesod-auth library: Authentication for Yesod.
yesod-auth-account library: An account authentication plugin for Yesod
yesod-auth-deskcom library: Desk.com remote authentication support for Yesod apps.
yesod-auth-fb library: Authentication backend for Yesod using Facebook.
yesod-auth-kerberos library: Kerberos Authentication for Yesod.
yesod-auth-ldap library: LDAP Authentication for Yesod.
yesod-auth-oauth library: OAuth Authentication for Yesod.
yesod-auth-pam library: Provides PAM authentication module
yesod-auth-smbclient library: Authentication plugin for Yesod using smbclient
yesod-auth-zendesk library: Zendesk remote authentication support for Yesod apps.
yesod-bin programs: The yesod helper executable.
yesod-comments library: A generic comments interface for a Yesod application
yesod-continuations library and program: Continuations for Yesod
yesod-core library: Creation of type-safe, RESTful web applications.
yesod-datatables library: Yesod plugin for DataTables (jQuery grid plugin)
yesod-default library: Default config and main functions for your yesod application (deprecated)
yesod-dsl program: DSL for generating Yesod subsite to manage an RDBMS;
yesod-eventsource library: Server-sent events support for Yesod apps.
yesod-fay library: Utilities for using the Fay Haskell-to-JS compiler with Yesod.
yesod-fb library: Useful glue functions between the fb library and Yesod.
yesod-form library: Form handling support for Yesod Web Framework
yesod-goodies library: A collection of various small helpers useful in any yesod application.
yesod-json library: Generate content for Yesod using the aeson package. (deprecated)
yesod-links library: A typeclass which simplifies creating link widgets throughout your site
yesod-markdown library: Tools for using markdown in a yesod application
yesod-newsfeed library: Helper functions and data types for producing News feeds.
yesod-paginate library: Pagination for Yesod sites.
yesod-paginator library: A pagination approach for yesod
yesod-persistent library: Some helpers for using Persistent from Yesod.
yesod-platform library: Meta package for Yesod
yesod-pnotify library: Yet another getMessage/setMessage using pnotify jquery plugins
yesod-pure library: Yesod in pure Haskell: no Template Haskell or QuasiQuotes
yesod-recaptcha library: Dead simple support for reCAPTCHA on Yesod applications.
yesod-routes library: Efficient routing for Yesod.
yesod-rst library: Tools for using reStructuredText (RST) in a yesod application
yesod-sitemap library: Generate XML sitemaps.
yesod-static library: Static file serving subsite for Yesod Web Framework.
yesod-test library: integration testing for WAI/Yesod Applications
yesod-test-json library: Utility functions for testing JSON web services written in Yesod
yesod-vend library and program: Simple CRUD classes for easy view creation for Yesod
youtube programs: Upload video to YouTube via YouTube API
yuiGrid library: Grids defined by layout hints and implemented on top of Yahoo grids.

Web Server

hws program: Simple Haskell Web Server

Welcome

manatee-welcome library and program: Welcome module to help user play Manatee quickly.

Workflow

Workflow library: Workflow patterns over a monad for thread state logging & recovery

XFCE

xfconf library and programs: FFI bindings to xfconf

XML

cmathml3 library and program: Data model, parser, serialiser and transformations for Content MathML 3
concrete-relaxng-parser program: A parser driven by a standard RELAX NG schema with concrete syntax extensions.
dtd-text library: Parse and render XML DTDs
dtd-types library: Basic types for representing XML DTDs
expat-enumerator library: Enumerator-based API for Expat
fast-tagsoup library: Fast parser for tagsoup package
fast-tagsoup-utf8-only library: Fast parser for tagsoup package
FpMLv53 library: A binding for the Financial Products Markup Language (v5.3)
generic-xml library: Marshalling Haskell values to/from XML
HaXml library and programs: Utilities for manipulating XML documents
hexpat library: XML parser/formatter based on expat
hexpat-iteratee library: Chunked XML parsing using iteratees
hexpat-pickle library: XML picklers based on hexpat, source-code-similar to those of the HXT package
hexpat-tagsoup library: Parse (possibly malformed) HTML to hexpat tree
HXQ library: A Compiler from XQuery to Haskell
hxt library: A collection of tools for processing XML with Haskell.
hxt-binary library: Serialisation and deserialisation of HXT XmlTrees.
hxt-cache library: Cache for HXT XML Documents and other binary data
hxt-curl library: LibCurl interface for HXT
hxt-expat library: Expat parser for HXT
hxt-extras library: Extra functions for HXT
hxt-filter library: A collection of tools for processing XML with Haskell (Filter variant).
hxt-http library: Interface to native Haskell HTTP package HTTP
hxt-relaxng library: The HXT RelaxNG validator
hxt-tagsoup library: TagSoup parser for HXT
hxt-xpath library: The XPath modules for HXT.
hxt-xslt library: The XSLT modules for HXT.
hxthelper library: Helper functions for HXT
libxml library: Binding to libxml2
libxml-enumerator library: Enumerator-based API for libXML's SAX interface
libxml-sax library: Bindings for the libXML2 SAX interface
libxslt library: Binding to libxslt
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
parsec-tagsoup library: Parsec parsers for Tagsoup tag streams
plist library: Generate and parse Mac OX property list format
polysoup library: Online XML parsing with polyparse and tagsoup
property-list library: Apple property list parser
pxsl-tools program: Parsimonious XML Shorthand Language--to-XML compiler
regular-xmlpickler library: Generic generation of HXT XmlPickler instances using Regular.
tagchup library and programs: alternative package for processing of tag soups
tagsoup library and program: Parsing and extracting information from (possibly malformed) HTML/XML documents
tagsoup-parsec library: Tokenizes Tag, so [ Tag ] can be used as parser input.
text-xml-generic library: Serialize Data to XML (strings).
wraxml library and program: Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure
xhtml library: An XHTML combinator library
xml library: A simple XML library.
xml-basic library: Basics for XML/HTML representation and processing
xml-conduit library: Pure-Haskell utilities for dealing with XML with the conduit package.
xml-enumerator-combinators library and program: Parser combinators for xml-enumerator and compatible XML parsers.
xml-helpers library: Some useful helper functions for the xml library.
xml-monad library: Monadic extensions to the xml package.
xml-picklers library: XML picklers based on xml-types, ported from hexpat-pickle
xml-to-json program: Simple command line tool for converting XML files to json
xml-types library: Basic types for representing XML
xml2html library: blaze-html instances for xml-conduit types (deprecated)
xmlgen library and programs: Fast XML generation library
xsd library: XML Schema data structures

XMonad

xmonad-screenshot library: Workspaces screenshooting utility for XMonad.

Yampa

YFrob library: Yampa-based library for programming robots

Yesod

cookie library: HTTP cookie parsing and rendering
corebot-bliki library and program: A bliki written using yesod. Uses pandoc to process files stored in git.
css-text library: CSS parser and renderer.
elm-yesod library: The Elm language Yesod compatibility module.
friendly-time library: Print time information in friendly ways
gravatar library: Look up gravatar image urls by email address
hamlet library: Haml-like template files that are compile-time checked
keter library and program: Web application deployment manager, focusing on Haskell web frameworks
path-pieces library: Components of paths.
persistent library: Type-safe, multi-backend data serialization.
persistent-mysql library: Backend for the persistent library using MySQL database server.
persistent-postgresql library: Backend for the persistent library using postgresql.
persistent-sqlite library: Backend for the persistent library using sqlite3.
persistent-template library: Type-safe, non-relational, multi-backend persistence.
pool-conduit library: Resource pool allocations via ResourceT.
shakespeare library: A toolkit for making compile-time interpolated templates
shakespeare-css library: Stick your haskell variables into css at compile time.
shakespeare-i18n library: A type-based approach to internationalization.
shakespeare-js library: Stick your haskell variables into javascript/coffeescript at compile time.
shakespeare-text library: Interpolation with quasi-quotation: put variables strings
shorten-strings library: Shorten a variety of string-like types adding ellipsis
wai-app-file-cgi library: File/CGI/Rev Proxy App of WAI
wai-app-static library: WAI application for static serving
wai-logger library: A logging system for WAI
wai-logger-prefork library: A logging system for preforked WAI apps
wai-test library: Unit test framework (built on HUnit) for WAI applications.
wai-websockets library and program: Provide a bridge betweeen WAI and the websockets package.
warp library: A fast, light-weight web server for WAI applications.
warp-tls library: HTTP over SSL/TLS support for Warp via the TLS package
web-routes-quasi library and program: ...
yackage programs: Personal Hackage replacement for testing new packages.
yesod library: Creation of type-safe, RESTful web applications.
yesod-auth library: Authentication for Yesod.
yesod-auth-deskcom library: Desk.com remote authentication support for Yesod apps.
yesod-auth-kerberos library: Kerberos Authentication for Yesod.
yesod-auth-ldap library: LDAP Authentication for Yesod.
yesod-auth-oauth library: OAuth Authentication for Yesod.
yesod-auth-pam library: Provides PAM authentication module
yesod-auth-smbclient library: Authentication plugin for Yesod using smbclient
yesod-auth-zendesk library: Zendesk remote authentication support for Yesod apps.
yesod-bin programs: The yesod helper executable.
yesod-comments library: A generic comments interface for a Yesod application
yesod-core library: Creation of type-safe, RESTful web applications.
yesod-datatables library: Yesod plugin for DataTables (jQuery grid plugin)
yesod-default library: Default config and main functions for your yesod application (deprecated)
yesod-dsl program: DSL for generating Yesod subsite to manage an RDBMS;
yesod-eventsource library: Server-sent events support for Yesod apps.
yesod-fay library: Utilities for using the Fay Haskell-to-JS compiler with Yesod.
yesod-form library: Form handling support for Yesod Web Framework
yesod-goodies library: A collection of various small helpers useful in any yesod application.
yesod-json library: Generate content for Yesod using the aeson package. (deprecated)
yesod-links library: A typeclass which simplifies creating link widgets throughout your site
yesod-markdown library: Tools for using markdown in a yesod application
yesod-newsfeed library: Helper functions and data types for producing News feeds.
yesod-paginate library: Pagination for Yesod sites.
yesod-paginator library: A pagination approach for yesod
yesod-persistent library: Some helpers for using Persistent from Yesod.
yesod-platform library: Meta package for Yesod
yesod-pnotify library: Yet another getMessage/setMessage using pnotify jquery plugins
yesod-pure library: Yesod in pure Haskell: no Template Haskell or QuasiQuotes
yesod-routes library: Efficient routing for Yesod.
yesod-rst library: Tools for using reStructuredText (RST) in a yesod application
yesod-sitemap library: Generate XML sitemaps.
yesod-static library: Static file serving subsite for Yesod Web Framework.
yesod-tableview library: Table view for Yesod applications
yesod-test library: integration testing for WAI/Yesod Applications
yesod-text-markdown library: Yesod support for Text.Markdown.
yesod-vend library and program: Simple CRUD classes for easy view creation for Yesod

Zeromq

patterns library: Common patterns in message-oriented applications

Unclassified

backdropper library and program: Rotates backdrops for X11 displays using Imagemagic.
base library: Basic libraries
base-unicode-symbols library: Unicode alternatives for common functions and operators
bein programs: Bein is a provenance and workflow management system for bioinformatics.
black-jewel program: The pirate bay client.
calc program: A small compiler for arithmetic expressions.
codemonitor program: Tool that automatically runs arbitrary commands when files change on disk.
cognimeta-utils library and program: Utilities for Cognimeta products (such as perdure). API may change often.
cursedcsv program: Terminal tool for viewing tabular data
DBus library: DBus bindings
download-media-content program: Simple tool to download images from RSS feeds (e.g. Flickr, Picasa)
Extra library: A grab bag of modules.
fay-dom library: DOM FFI wrapper library for Fay
fay-jquery library: jQuery binding.
happs-hsp library
hask-home programs: Generate homepages for cabal packages
Hmpf program: An MPD client designed for a Home Theatre PC
hnop program
hoodle library and program: Executable for hoodle
hoodle-core library: Core library for hoodle
hoodle-publish program: publish hoodle files as a static web site
hsConfigure library: By using this package, you can make application configurable.
hxournal library and program: A pen notetaking program written in haskell
infinity program
LambdaINet program: Graphical Interaction Net Evaluator for Optimal Evaluation
loopy program: Find all biological feedback loops within an ecosystem graph.
lsystem program: Paint an L-System Grammar
metaplug library: a tiny ghc api wrapper
MissingH library and program: Large utility library
MissingPy library: Haskell interface to Python
padKONTROL library: Controlling padKONTROL native mode
pointfree program: Tool for refactoring expressions into pointfree form
refh program: A command-line tool for pasting to https://www.refheap.com
safe library: Library for safe (pattern match free) functions
satchmo-minisat library: minisat driver as backend for satchmo
strictify program: Find a local optimum of strictness annotations.
Theora library
timberc program: The Timber Compiler.
Useful library: Some useful functions and shorthands.
xkcd program: Downloads the most recent xkcd comic.
xournal-convert library and program: convert utility for xoj files

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