Operating Systems DMERT UNIX RTR MERT UNIX-RT UNIX/TS PC-IX [Interactive Systems Corp] IS/1 [Interactive] IS/3 Interactive 386/ix Interactive UNIX BKUNIX LSX Wollongong Unix Mini Unix AUSAM Idris [Whitesmiths] UCLA Secure Unix UNIX 32V UCLA Locus AIX PS/2 RT/EMT [Human Computing Resources] Ultrix 32M [DEC] V7M [DEC] Ultrix-11 Ultrix MUTOS [Robotron] Venix [VenturCom] INMOS AurOS [Auragen] PNX [Perq Systems] Unisis [Codata] MST Unix [Micro Station Technology] V7/x86 RTUX [Emerge Systems] FOR:PRO [Fortune Systems] MNOS CPIX[ IBM] Munix [Generics] UniPlus System V [UniSoft] Trusted Xenix [SCO] Sinix [Siemens] Reliant UNIX Xenix [Microsoft] SCO XENIX SCO UNIX OpenServer (v1-v6) Onix [Onyx Corp] TNIX [Tektronix] Zeus [Zilog] Micronix [Morrow] COCANET UNIX DEMOS DarwinBSD DiscoBSD OS/MP [Solbourne] RetroBSD SunOS [Sun] Concentrix [Alliant] HEP-UPX [Denelcor] UTX/32(S) [Gould] ConvexOS [Convex] RT PC AOS [IBM] News-OS [Sony] BSD Net/1 [Acorn] RISC iX HPBSD [HP] BSD/OS 4.4BSD Net/2 GNU-Darwin jibbed ekkoBSD Bitrig MirOS OpenBSD NetBSD Kylin JunOS [Juniper] MAXION/OS [Concurrent] DesktopBSD OPNsense PFsense CellOS [Sony Playstation 3] OrbisOS [Sony Playstation 4] PlayStation 5 system software StarBSD HardenedBSD OpenServer v10 [Xinuos] helloSystem NixBSD PicoBSD airyxOS ravynOS Real Time UNIX [Concurrent] FuryBSD AOS [IBM] AOS Reno AOS Lite NeXTBSD UMAX 4.3 [Encore] PacBSD NDIX [Norsk Data] MidnightBSD TMach [Trusted Information Systems] GhostBSD PC-BSD [iXsystems] TrueOS DragonFlyBSD FreeBSD BSD Net/2 386BSD RT-Mach GNU Hurd Workplace OS MacMach Lites Darwin on ARM xMach Masix Mach386 [mt Xinu] MachTen [Tenon] KSR OSF/1 [Kendall Square Research] HI-OSF/1-MJ [Hitachi] SPP-UX [Convex] OSF/1 AD [Locus Computing] HP OSF/1 [HP] GNU Hurd PPC MkLinux Uros OSF/MK Paragon OSF/1 [Paragon] DEC OSF/1 AXP Digital UNIX Tru64 UNIX OSF/1 Mach-US OpenDarwin PureDarwin bridgeOS [Apple] UTEK [Tektronix] watchOS [Apple] Dynix [Sequent Computer Systems] xrOS [Apple] visionOS [Apple] more/BSD [mt Xinu] iPadOS [Apple] Genix [National Semiconductor] tvOS [Apple] Uniq [Uni Digital Technologies] audioOS [Apple] MOS (Multicomputer OS) iPhoneOS [Apple] iOS [Apple] BRL Unix Mac OS X Server 10 [Apple] UNSW Mac OS X [Apple] OS X [Apple] macOS [Apple] SRI-NOSC Unix FreeDarwin Darwin [Apple] SPIX [Bull Computers] BOS Rhapsody Mac OS X Server 1.0 HI-UX [Hitachi] NeXTSTEP [NeXT Computer] OPENSTEP Mach (kernel) HP-UX [HP] 3BSD 4BSD 4.2BSD 4.3BSD 4.3BSD Quasijarus UTS/M [Fujitsu] BSD 2BSD 2.11BSD UTS [Amdahl] MP-RAS Unix [NCR] HCR Unix [Human Computing Resources] Regulus [Alcyon] SUNIX [SGS-Ates] ARIX Unix [Arix Corp] Sphinx [Data General] DC/OSx [Pyramid] Altos System V [Altos] RISC/OS [MIPS] OPUS5 [Opus Systems] DG/UX [Data General] Monterey AIX [IBM] WEGA [East Germany] EWS-UX [NEC] UX/4800 [NEC] MOSIX CX/SX [Harris] CX/RT [Harris] CX/UX [Harris] UHC Unix [UHC] RISC Unix [Acorn] A/UX [Apple] COSIX [CS&S] Eurix/Generics Unix [Generics] REAL/IX [AEG] Zenith Unix Amiga Unix [Amiga] FTX [Stratus Technologies] Unisys Unix [Unisys] Unix/NS [NCR] ZENY Unix Dynix/ptx Plexus System [Plexus] BeleniX MartUX OpenSXCE Illumian OpenIndiana OmniOS Tribblix Unleashed SchilliX Helios Dyson DilOS SmartOS MilaX NexentaStor Nexenta OS OpenSolaris Illumos Trusted Solaris [Sun] Solaris [Sun] Consensys Unix UP-UX [NEC] UXP/DS [Fujitsu] EP/IX [Control Data] ENIX [Everex] SORIX [Siemens] ESOS [NEC] SUPER-UX [NEC] Dell Unix [Dell] Atari Unix [Atari] ASV Esix Unix [Everex] NonStop-UX [HP] Topix [Sequioa] RX/V CTIX [Convergent] UMAX V [Encore] TI System V [Texas Instruments] Microport Unix QNIX [Spider Systems] V/386 DISTRIX [Convergent Technologies] Unicos/mk [Cray] Unicos MAX [Cray] CXOs [Cray] Unicos Unity [Human Computing Resources] Serix [CMI Corp] Trusted IRIX/B [SGI] Unicos/mp [Cray] IRIX [SGI] Stellix [Stardent] IRIS GL2 [SGI] UNIX System III [AT&T] UNIX System V UnixWare Open UNIX SCO UnixWare CB UNIX USG PWB/Unix UNICS [AT&T/Bell Labs] Unix AmigaOS XL [Haage & Partner] IOS-XR [Cisco] BlackBerry 10 [BlackBerry] Blackberry PlayBook OS [RIM] QNX Neutrino [QNX Software] QNX RTOS QNX QNX Neutrino RTOS QNX QUNIX [QNX Software] QNX MR MSS Multics Aero Agnix ANALIX AquilaOS Arcrascent OS Asterinas Astral BeeOS Banan-OS BoxOS Brutal Bunnix cavOS C Executive [JMI Software] CatK Chorus [Chorus Systemes] Chorus/MIX ChorusOS CINUX Coherent [MWC] Core-OS-RISC-V Crocos Cromix [Cromemco] Cute! Data ONTAP [NetApp] DCC-IX Dennix Digix [Digirede] ABCenix [Luxor] DNIX [Dataindustrier] DRM System [NV Philips] duckOS EDIX Embox Escape Ethereal FiwixOS ForthOS Fotix Freeunix Ginger OS GiX GNO/ME [Procyon] Gramado HeliOS [Perihelion] Gloire Ironclad DSD Jimix OS JS-OS kerla LemonOS TrustyOS [Google] Little Kernel LUnix HP-RT [HP] TC/IX [Control Data] EP/LX LynxOS maestro managarm ManRiX Mattise MazzanetOS Menix MERLIN [Silicon Valley Software] Meshix Mimiker Minirighi MiNT/MultiTOS FreeMiNT MOS moss Multiplix Uni Orion OS Pintos NachOS NexNix Nightingale Novix Oasis [Phase One Systems] THEOS Octox Onyx OS67 OSv [Clodius Systems] Playbit Mulplix Plurix Tropix PowerNex Punix Quantix-OS qword REAL Redox OS Reenix rtmk SeaOS SerenityOS SIDIX skiftOS Sortix Soso SOX [Cobra Tecnologia] Sprite SteinsOS Synthesis TacOS Thix Thoroughbred/OS [Omega] Tilck Tinix PonyOS ToaruOS TravorOS Trinix TRIX TUNIS Tupai Ultra Unite RTOS UNOS [Charles River Data Systems] USIX [System Six] FuzixOS UZIX Valkyrie Viengoos Vinix VirtualLogix C5 [Jaluna] VMEexec [Motorola] System/88 OS [IBM] VOS [Stratus Technologies] OpenVOS VSTa FMI/OS wanix WiNGS Winix X1 X15 XDI [Crescendo Communications] CatOS Xinu Sugar-UX rxv64 xv6 xv7 Yamit ZeldaOS ZeX/OS Preventa BCC Minix Minix-rpi_b ReMinix OS MacMinix MeikOS [Meiko Scientific] Intel ME Firmware [Intel] Magic-1 Minix RT-MINIX Minix-vmd Minix MINIX4RT NitrOS-9 OS-9000 [Microware] CD-RTOS David [Microware] OS-9/68K [Microware] OS-9 RTOS [Microware] Plan B 9front Harvey OS 9ferno Jehanne Nix 9atom purgatorio Inferno Plan 9 [AT&T/Bell Labs] 9legacy mOS opuntiaOS pranaOS R9 MX Linux MEPIS Zorin OS Ubuntu Touch KDE Neon Linux Mint Pop!_OS [System76] elementary OS Ubuntu [Canonical] Knoppix Sailfish OS [Jolla] Tizen [Samsung] mer MeeGo OS2005 [Nokia] Maemo Hiweed Deepin Debian GNU/Linux Linux-8086 ELKS ChromeOS [Google] Enoch Linux Gentoo Linux Fabric OS (Linux-based) [Brocade] GoboLiux Alpine Fire OS [Amazon] WearOS [Google] Harmony OS [Huawei] (Android-based) IodeOS CalyxOS CopperheadOS Android Hardening GrapheneOS Eelo /e/ DivestOS CyanogenMod LineageOS Android [Google] Void Linux NixOS Solus Lycoris Desktop Clear Linux [Intel] Amithlon [Haage & Partner] My Home Screen [Panasonic] KaiOS [KaiOS Technologies] Firefox OS [Mozilla] Palm webOS [Palm] HP webOS [HP] Open webOS [HP] LG webOS [LG] Guix System Linux-libre OpenWRT Manjaro Arch Linux ROSA Linux PCLinuxOS Mageia Linux Mandrake Linux [MandrakeSoft] Mandriva Linux OpenMandriva Lx Conectiva Linux Oracle Linux [Oracle] EulerOS [Huawei] CentOS AlmaLinux Scientific Linux Rocky Linux Red Hat Enterprise Linux Fedora Core Fedora Red Hat Linux [Red Hat] SUSE Linux Enterprise [SuSE] SuSE Linux [SuSE] OpenSUSE Klinux Caldera OpenLinux Slackware Linux Linux System [Apple] Macintosh System Software Mac OS BlackBerry OS [RIM] Concurrent CPM-80 [Digital Research] Concurrent CP/M-86 MP/M-86 [Digital Research] MP/M-80 [Digital Research] MP/M II SvarDOS (EDR-DOS-based) DR-DOS/OpenDOS [Digital Research] Enhanced DR-DOS DOS Plus [Digital Research] DR-DOS Novell Dos Caldera OpenDOS Caldera DR-DOS DR-DOS Device Logics DrDOS DataPac Multiuser DOS [DataPac] IMS Multiuser DOS IMS REAL/32 REAL/NG 4680 OS [IBM] 4690 OS DR PalmDOS [Digital Research] Apple CP/M [Apple] CCI Multiuser DOS [Concurrent Controls] CP/M 80 [Digital Research] S5-DOS/MT [Siemens] Concurrent CP/M-68k [Digital Research] FlexOS [Digital Research] CP/M [Digital Research] Concurrent PC DOS Concurrent DOS Concurrent DOS XM Multiuser DOS StreamOS Svarog386 SvarDOS (FreeDOS-based) MicroOS fdpp doesmu Night Kernel PD-DOS FreeDOS XDOS NSS-DOS DOS/NT DOS-C MSX-DOS [Microsoft] PCVMS [Wendin] PCUNIX/PCNX [Wendin] DCP [Robotron] Wendin-DOS [Wendin] Z-DOS [Microsoft] Towns OS [Fujitsu] Compaq DOS [Compaq] MS-DOS [Microsoft] Windows 95 Windows 98 Windows ME QDOS/86-DOS [SCP] PC-DOS DIP DOS [Atari] CP/Z [Robotron] BCU880 [Robotron] MicroDOS [Robotron] COS-PSA [Robotron] DOS-PSA [Robotron] CPM-FDE [Robotron] CSOS [Robotron] MFA-CPA [Robotron] TOS/M [Robotron] CP/A [Robotron] CP/KC [Robotron] SCP-IBE [Robotron] K8918-OS [Robotron] CSOC [Robotron] CP/L [Robotron] CP/K [Robotron] SCP/M [Robotron] OS/M [Robotron] DAC [Robotron] SCP [Robotron] BonnyDOS/286 PC-MOS/386 [Software Link] Paragon DOS [Paragon] PTS-DOS [PhysTechSoft] Altair DOS [MITS] AMSDOS [Amstrad] ANDOS Apple DOS [Apple] Apple SOS [Apple] Atari DOS [Atari] Batch-11/DOS-11 [DEC] CDOS [Cromemco] CMB DOS [Commodore] CSI-DOS DOS XL [Optimized Systems] Embedded DOS [General Software] GDOS [Miles Gordon Technology] HDOS [Heath Company] Human68k TASiS IS-DOS MDOS/MIDAS [Microsoft] SSB-DOS (Smoke Signal DOS) [TSC] INOS [Introl] UniFLEX [TSC] MiniDOS DOS MiniFlex FLEX MK-DOS NewDOS/80 [Apparat] NetDOS Oric DOS [Tangerine] PDOS Pocket OS GS/OS [Apple] ProDOS [Apple] ROM-DOS [Datalight] Datalight ROM-DOS rou2exOS RxDOS SimpleOS (DOS-like) SMSQ/E Sinclair QDOS SpartaDOS X [ICD Inc] ST-DOS SuperDOS TR-DOS [Technology Research] TRSDOS [Tandy] TurboDOS [Software 2000] udos yhos ICOS AOS/VS II [Data General] MP/OS [Data General] MP/AOS [Data General] AOS/RT32 [Data General] AOS/VS [Data General] AOS [Data General] DG SOS [Data General] DG DOS [Data General] RDOS OS/RW [Soviet Union] RSX-20F [DEC] Micro/RSX [DEC] RSX-11M+ [DEC] DOS/RV (OCPBM) [Soviet Union] OMOS [Robotron] MOOS [Robotron] MicroVMS [DEC] Desktop-VMS VAXELN [DEC] MOS VP VAX-11/VMS [DEC] VAX/VMS OpenVMS SM-EVM [Soviet Union] RSX-11M [DEC] RSX-11S [DEC] IAS [DEC] RSX-15 [DEC] RSX-11D RSX180 Windows Phone 8 [Microsoft] Xbox One & X/S system software [Microsoft] Xbox system software [Microsoft] Windows Server 2000 [Microsoft] Windows Server 2003 Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2025 Windows 10 Mobile [Microsoft] Windows RT [Microsoft] Xbox 360 system software [Microsoft] Windows NT 3.x [Microsoft] Windows NT 4 Windows 2000 Windows XP Windows Vista Windows 7 Windows 8 Windows 10 Windows 11 ArcaOS [Arca Noae] LAN Manager [Microsoft/3Com] eComStation [Serenity Systems] OS/2 [IBM/Microsoft] osFree Voyager ExectOS Ekush OS ReactOS Free95 Midori [Microsoft] Singularity [Microsoft] Windows Phone 7 [Microsoft] Pocket PC [Microsoft] Windows Mobile 2003 Windows Mobile 5 Windows Mobile 6.x Windows CE [Microsoft] Windows Embedded CE Windows Embedded Compact AspireOS VMWAros Icaros Desktop Apollo OS AROS Syllable PyroOS AtheOS PhOS/PhosphurOS BeOS [Be Inc] ZETA [Yellowtab] CuriOS MorphOS OpenBeOS Haiku NewOS pOS [ProDAD] AmigaOS 3.5 [Haage & Partner] AmigaOS 3.9 CDTV Cambridge Distributed Computing System AmigaOS 4 [Hyperion] AmigaOS 4.1 Workbench [Commodore] Workbench 2 Workbench 3 AmigaOS 3.1 AmigaOS 3.2 [Hyperion] TRIPOS RISC OS 5 [Castle Technology]/ RISC OS Open NCOS [Element 15] Arthur [Acorn] RISC OS 2 RISC OS 3 RISC OS 4 RISC OS 6 DOS/ES [Robotron] Edos [TSCS] TOS/360 [IBM] DOS/360 DOS/VS DOS/VSE SSX/VSE VSE/SP VSE/ESA z/VSE VSEn [21st Century Software] BS3000 [Siemens] OSIV/F4 [Fujitsu] OSIV/F4 MSP OSIV/MSP-EX VOS2 [Hitachi] VOS3 OS/PCP [IBM] OS/MVT [IBM] SRTOS [IBM] OSIV/XSP [Fujitsu] OSIV/ESPIII [Fujitsu] OSIV/X8 [Fujitsu] OSIV/X8 FSP OS ES [Soviet Union] IBSYS [IBM] OS/360 OS/MFT OS/VS MVS/SE MVS/SP MVS/370 MVS/ESA OS/390 z/OS OS/400 [IBM] i5/OS IBM i CPF [IBM] SABRE [IBM] PARS ACP ACP/TPF TPF z/TPF OSIV/F2 [Fujitsu] BOS [Fujitsu] ROS BOS II BOS/VS BOS/360 [IBM] VM/IS VP/CSS [NCSS] BSEPP (VM/BSE) [IBM] SEPP (VM/SE) [IBM] IM/370 [IBM] VM/IX [Interactive/IBM] CP/CSS [IBM] VM/370 VM/SP VM/XA MA VM/XA SF VM/XA SP VM/ESA z/VM CP/CMS [IBM] CP-40/CP-67 [IBM] CTSS [MIT/Project MAC] Fortran Monitor System (FMS) [IBM] IBM 1410/7010 OS [IBM] SABER [IBM] SSP [IBM] System/32 [IBM] System/3 [IBM] TSS/360 [IBM] AVM/EF [Fujitsu] AVM/EX MOD [NEC] TOPS [Toshiba] TMS MJCS [Toshiba] COS/MT [Toshiba] COS/DS COS/30 POS (Primary OS) [Hitachi] TOS (Tape OS) [Hitachi] EDOS-MSO [Hitachi] EDOS [Hitachi] DOS [Hitachi] TDOS (Tape Disk OS) [Hitachi] Model 30T OS [Mitsubishi] Model 10PT OS [Mitsubishi] Model 10T OS [Mitsubishi] MARK series [Mitsubishi] FACOM MCP [Fujitsu] FACOM MONITOR [Fujitsu] ROS [Fujitsu] DIPS [NTT] RBM (Real-Time Batch Monitor) [Mitsubishi] BPM (Batch Processing Monitor) [Mitsubishi] BTM (Batch Time-Sharing Monitor) [Mitsubishi] UTM (Universal Time-Sharing Monitor) [Mitsubishi] OS8 [Hitachi] OSII [Hitachi] OSII/VM NDOS [Hitachi] ACOS [NEC] UTS/VM [Mitsubishi] VMS [Hitachi] VMS/ES VMS/As GOS/VS [Mitsubishi] MPE-A [HP] MPE-B MPE-C MPE II MPE III MPE IV MPE V MPE XL MPE/iX CodeZero NOVA Osker P4 PikeOS UX/RT KataOS [Google] LionsOS sepOS (Secure Enclave Processor) [Apple] SkyOS [NIO] Neptune OS seL4 TUD:OS Fiasco.OC/L4Re Fiasco L4/MIPS Gnuppix GNU/Hurd-L4 L4/Alpha E1 Distributed OS L2/Eumel L3 L4 L4 X L4Ka::Hazelnut (X.1) OKL4 NICTA::L4-embedded FreeVMS REX OS WrmOS Orion (L4 kernel) Darbat Iguana/Wombat OS L4Ka::Pistachio (X.2) ERIKA Enterprise ERCOS [ETAS] osCAN [Vector Informatik] MICROSAR OS [Vector Informatik] ProOSEK/time [3SOFT Elektrobit] ProOSEK [3SOFT/Elektrobit] RTA-OSEK [ETAS] RTA-OS [ETAS] tresos [3SOFT/Elektrobit] TTP-OS [TTTech] Arctic Core FreeOSEK nxtOSEK ev3OSEK openOSEK TOPPERS-OSEK Trampoline OSEKturbo [Metrowerks] Trioz OSEK RTOS [Trioztech] PICOS18 [Pragmatic] mKernel AMOS 32 [Alpha Microsystems] AMOS/L [Alpha Microsystems] AMOS 2 AMOS [Alpha Microsystems] AMIGOD OSD/BC [Fujitsu] OSD/XC [Fujitsu] BS2000 [Siemens] BS2000/OSD TSOS [RCA] VMOS VS/9 Coyotos Gnosis KeyKOS EROS CapROS Fabric OS [Brocade] ExtremeWare [Extreme Networks] VxWorks AE [Wind River Systems] VRTX [Wind River Systems] VxWorks GAMMA-11 [DEC] HT-11 [Heathkit] RT-11 [DEC] INTEGRITY-178B [Green Hills Software] INTEGRITY [Green Hills Software] micro-velOSity [Green Hills Software] MULTI-8 [DEC] MultOS/8 [DEC] OS/78 [DEC] MULTOS [DEC] PS/8 [DEC] OS/8 OS/12 MS/8 [DEC]] NOS [Control Data] NOS/VE KRONOS [Control Data] MACE [Control Data] DL-DOS Blue Jay LorenOS StarlungOS TachyonOS PathOS TomOS AquariusOS MichalOS grvtyfllsos ZachOS SAX OS CyberOS mattOS Shookos MikeOS SafeRTOS [Wittenstein] PebbleOS MuditaOS FRANK OS OpenRTOS [Wittenstein] Zepp OS [Huawei] Lua RTOS dnx RTOS FreeRTOS K42 [IBM] Tornado Hurricane SHARE Operating System (SOS) UMES (University of Michigan Executive System) GMOS [General Motors] GM-NAA I/O HarmonyOS NEXT [Huawei] HongMeng [Huawei] Oniro KaihongOS OpenHarmony [Huawei] LiteOS [Huawei] 10biForthOS 1tgr Rust OS A/ROSE [Apple] ackOS AdaOS Admiral Aegis (1990s) AEGIS [Apollo] Domain/OS Aksel AL/1 Accent (kernel) Aleph (kernel) AlliedWare [Allies Telesis] ALMOS-MKH ALMOS Amazfit OS (non-Android) [Huawei] AMBOSS [Siemens] Amethyst Amoeba AN/FSQ-32 Angel anillo-os anos Apache Mynewt Apollo Project Aqueous Arax OS Ares (Helios microkernel) ARMOS [Itoshea] ARMOS [MaxMade] armOS [Thanoskoutr] ArvernsOS ARX [Acorn] AscendereOS Asha platform [Nokia] Asuro Atari TOS [Atari] Atlas I Supervisor Merlon ATOS AuraOS Aura Avana awooOS Axid OS B1/B2/B3/B4 [NCR] Bada [Samsung] Baget RTOS (OS2000) BagrOS-4000 Banana Banyan VINES [Banyan Systems] BareMetal [Return Infinity] Barrelfish [Microsoft] Basic Executive System Beelzebub Berkeley Timesharing System BeRTOS BESYS [Bell Labs/AT&T] bcos Biscuit bkernel BKY BleskOS PC-BLIS BLIS/COBOL [Information Processing Inc] BlueOS BoneOS BOS1810 [Robotron] brickOS BRiX BS-M [Siemens] BS3 (for TR-440) [AEG-Telefunken] BS600 [Robotron] C64 OS CactusOS CAL Cal TSS Cambridge CAP OS Cambridge Ring CAOS [Amiga] CAPS-11 [DEC] CAPS-8 [DEC] Caracal CCOS [Corvus Systems] Cedille ChaiOS chaos ChibiOS/RT Chios Chippewa Operating System [Cray] ChoacuryOS ChrysaLisp ClassiOS Cleese Clicker32 clive clix OS [iriver] CloudiumOS CNK OS [IBM] Dusk OS Collapse OS Color BASIC [Microsoft] colorForth OS CombOS [Trueb AG/Winter AG] conifer Contiki-NG Contiki Copland [Apple] COQOS [OpenSynergy] COS-310/350 [DEC] COSMOS CP-6 [Honeywell] CPC-OS [Amstrad] CPS (IBM Series/1) [IBM] Cray Operating System [Cray] Crazierl Croquet CSIRONET Cthulhu OS CTOS [Convergent Technologies] CuBit CyanOS Cyjon Daintree Dancy Danger OS [Danger Ltd.] Dartmouth Time Sharing System (DTSS) DawnOS DBOS DECtape Library System [DEC] Deos [DDC-I] DEX Extensible operating system (dex-os) DexOS dgos DIPOS [Nixdorf] DiscOS Distaff DiyOS DMS (IBM Series/3) [IBM] DMS (IBM 1130) [IBM] DNOS [Dell] DNOS [Texas Instruments] DPCX (IBM 8100) [IBM] DPPX (IBM 8100) [IBM] Dragon Slayer DreamOS d264b DreckigOS drex Drone OS DRYOS [Canon] Switch system software [Nintendo] 3DS system software [Nintendo] DSi system software [Nintendo] Unison RTOS [RoweBots] DSPnano RTOS [RowerBots] Dux DX10 [Texas Instruments] Dynacube DYSEAC eCos eduOS-rs EDX (IBM Series/1) [IBM] eggos EIEX [Robotron] Einherjar Elbrus-1 Elbrus-2 Elementary Operating System (EOS) [Coleco Industries] EMAS Embassy embeddedOS [Apple] embOS [Segger] Emerald AFROS EmuTOS Enarx enigma-core Enterprise OS [McDATA] EOS [ETA Systems] es [Nintendo] Essence ESX [VMware] ESXi Etheryal ETOS EUROS RTOS [EUROS] Excelsior [Soviet Union] EXEC [Unisys] Exec 8 [Unisys] OS 1100 OS 2200 Executive [ICL] EXECUTIVE-WAITLIST (Apollo Guidance Computer) eXpOS FlachsOS FLEX [Technical Systems Consultants] FlingOS FlorenceOS Fomos Foton Fontac Monitor [Fujitsu] FrameOS FROST fsaos Fuchsia [Google] Fudge Funk Fusion OS Future OS Galileo [Acorn] GeckOS GECOS/GCOS [General Electric] GeekOS Gemini Genera [Symbolics] Open Genera Portable Genera Genesis Genode GEORGE [ICL] GEOS [Berkeley Softworks] MeetiX OS Ghost OS Gopher OS GoTEE GovnOS GreenteaOS GRiD-OS Gubernatrix Halide HeartOS [DDC-I] HelenOS HeliX HEP/OS [Denelcor] hhuOS Hoho Honor Band OS [Huawei] Hoshi House HP-1000/RTE [HP] Hubris [Oxide] HYDRA Hydrogen HypnoticOS IanOS IBOX IDA Idylla OS Iiumos IJMON [IBM] ILIOS IMOS [NCR] IncludeOS Infinity-OS Interim OS intermezzOS IOS U [Nintendo] (Wii U) IOP OS [Broad On] (Nintendo Wii) IOS [Cisco] IronOS IronWare [Foundry Networks] iTrustee [Huawei] IS/M [Robotron] ISIS [Intel] ITOS [CTM Computer] ITS IX TinkerOS Shrine ZealOS J Operating System/LoseThos TempleOS J/MultiJob [ICL] JaeOS JAMB [Robotron] JavaOS [Sun Microsystems] Jio Bharat Platform JNode JonOS JOSS (on JOHNNIAC) JOSS II JSD/OS JSLK JX KasperskyOS [Kaspersky] KDF9 Timesharing Director [English Electric] KERNAL [Commodore] KI-TELNEX KLIKA-OS KMON KnightOS KOBRA [Robotron] Kora OS Kosar OS KripayaOS Kwast Lambda OS langOS LAP6-DIAL LAP LAP3 LAP4 LAP6 Lateral LCOS [Lancom Systems] LegoOS leJOS Lenovo RTOS LEO I OS [J. Lyons and Co.] LeOS LF OS Lilith Lilos Lisa OS [Apple] MacWorks LiteBox [Microsoft] Cray Time Sharing System (CTSS) Network Livermore Time Sharing System (NLTSS) Livermore Time Sharing System (LTSS) LOS OS MPOS LowEST Kernel OS LSE/OS Lyre M3 [TU Dresden] Machine Operating System (MOS) [Acorn] Magic Cap [General Magic] MAI Basic Four Mako Manticore MaRTE OS MARTOS [AEG] MARTOS-K [AEG] MaslOS 2 Mbed McOS Re AOS [Burroughs] MCP [Burroughs] MDOS [Micropolis] Medos-2 Melon MentOS Ostin KolibriOS MenuetOS MEOS [Robotron] Metta Mezzano Mi Band OS [Xiaomi] MICA [DEC] Michigan Terminal System (MTS) Micro/RSTS [DEC] MicroBe OS MicroC/OS [Micrium] MicroC/OS-II MicroC/OS-III MicroMore [Access] MicroPythonOS Mikado Mimosa Minoca OS MINTIA Mirage mkfreeOS Mobius Mojo OS MollenOS MonaOS Mongoose MOROS Mosys MPX (IBM 1800) [IBM] MicroMPX [Encore] MPX-32 [Systems Engineering Labs] mTower [Samsung] Mu MUMPS Munal-OS Mungi MUSIC/SP MSB-OS Mycelium MysticOS MyXomycota MZOS [Micropolis] Nano nanobyte_os Nanos Nanos [NanoVMs] Nanos [ngw] Nanos [Peter Hultqvist] NanOS [strike11] NanoShell NDK Nemesis Netware [Novell] Newton OS [Apple] Node Replicated Kernel NonStop [Tandem] Nope OS NOS (microkernel OS) NoS [veecle] Nucleus RTOS [Accelerated] Nut/OS NuttX A2 (a.k.a. AOS or Bluebottle) Oberon OctaOS ominOS On Time RTOS-32 [On Time Informatik] Onem OS OpenBLT OpenComRTOS/Virtuoso Next [Altreonic] OP-TEE Orange Slice Orion (Andromeda kernel) Orion (nyrarosu) ORK+ ORVYL OS/K OS/Z OS|periment osakaOS OSC245 [Ferranti] OSE & OS80 [ENEA AB] OSle OSSO ov-secure-kernel Oxide Ozone Apple II Pascal [Apple] p-System Palm OS [Palm] PANOS [Acorn] PAPL [Robotron] PatchworkOS PatienceOS PBS (Plattenbetriebssystem) [Siemens] BS1000 PDP-1 OS [DEC] TYMCOM-X [Tymshare] WAITS PDP-6 Monitor [DEC] TOPS-10 PEARL Operating System (POS) [Brown, Boverie & Cie] Pebble Operating System Pedigree penOS PenPoint OS [GO Corp] Perception PERQ [Three Rivers] PetrOS [Trumpet Software] Phantom OS Pick Pidi OS PilOS Plan 42 PlantOS PlayStation Vita system software [Sony] PlayStation Portable system software [Sony] PlusOS Pluto POK Poplar PotatOS PoulpyOS Prex PRIMOS [Prime] Project_DragonFly_VOS ProteanOS pSOS [Software Components Group] pSOSystem PuddingOS Pure64 PX5 RTOS Quasar QNodeOS Quark Operating System Quilt OS r3 racaOS RACS RAX VPS/VM RadioOS Rainbow RBASIC [Robotron] RC 4000 MS [Regnecentralen] Realme Wearable OS Reaver OS Redleaf Redshirt Resea Retro Rocket RetrOS-32 RezOS RhinOS Rhombus RIOT rkernel RMOS [Siemens] RMX/iRMX [Intel] RockBox RPS (IBM Series/1) [IBM] RSTS-11 [DEC] RSTS/E RT-Thread RTEMS RTMOS [General Electric] RTOS-UH RTXC Quadros Rumprun RustOS kRnel Rustboot RustyHermut Rux RYMOS S-OS S30+ [Nokia] SafaOS SAGE [IBM] Sanos Sartoris SavaJe SCIOPTA RTOS SCOMP [BAE Systems] XTS-200 XTS-300 XTS-400 SCOPE [Control Data] Tape Scope 2 NOS/BE ScorchOS Scout ScreenOS [Juniper] SECOS SegfaultOS SepaeOS SEPIA [Kolter Electronic] Serena SeriX (IBM Series/1) [IBM] Share/43 [Remington] Share/7 [Remington] SharpOS SIBO OS [Psion] EPOC EPOC 32 Symbian [Nokia] Silcos plain-OS Simple OS Simultaneous Operating System (SIOS) [Control Data] SingOS SINTRAN I [Norsk Data] SINTRAN III BROS [Robotron] SIOS [Robotron] SIPROS [Control Data] SivelkiriaOS SkyOS smiddyOS Snowdrop OS SO3 Solar OS Sombrero SpecOS SPIN Spring [Sun Microsystems] SPSYS SqueakNOS SqueakOS SRT8 [DEC] RTS/8 StardustOS Starina STSS Stupid Operating System (SOS) Kitten [Sandia] OpenCatamount [Sandia] SUNMOS [Sandia] PUMA Cougar Catamount swift-project1 SymbOS Symobi [Miray Software] SynestiaOS SYS-PSA [Robotron] SYSMIC [R2E] PROLOGUE TWINServer System7 T-Kernel tachyon Taligent [Apple] TAOS [Tao Group] Elate Intent Tape Director (WHIRLWIND I) TCL RTOS TCOS [T-Systems] TDOS TOPS-20 [DEC] TENEX [BBN] THE multiprogramming system The Operating System [dlandahl] Theseus Thor OS Ridge Operating System V-System Thoth ThreadX [Express Logic] Azure RTOS [Microsoft] rCore THU uCore OS Plus TI-RTOS [Texas Instruments] Tifflin TiMOS [Alcatel-Lucent] TinyOS Titan Supervisor TME [ICL] TPE-TP TMX [NCR] Tock OS Toddler Topaz/Taos TOPSY Torsion TriangleOS Trion CTRON microITRON JTRON ITRON BTRON eTRON TRON TSS-8 [DEC] TSX (IBM 1800) [IBM] TSX-32 [S&H Computer Systems] Twizzler TX990/TXDS [Texas Instruments] Tyndur TypOS Tysos UDOS (mainframe OS) UDOS [Robotron] Uinxed-Kernel Ultibo Core UltraLegacy ultronOS Urbit V2_OS Valix Vanadinite VEKOS Verex VersaDOS Viewpoint/GlobalView [Xerox] Zephyr VSPworks [Wind River Systems] Virtuoso RTOS [Eonic] Rocket Visopsys VM2000 [Siemens] VME/B [ICL] VME2900/OpenVME VME/K [ICL] VRX [NCR] VRX/E VSOS [Wang] WingOS WISDOM WMCS [WICAT] WPS [Wang] OIS Qubes OS Xen Hypervisor XenevaOS Vanadium OS XENUS XEOS Xerox Alto OS [Xerpx Xerox Star OS/Pilot XJ380 OS ExOS XOK XOmB xOS Xous YaxOS Z80-RIO [Zilog] Zot OS ZygOS 1951 1951 1952 1952 1953 1953 1954 1954 1955 1955 1956 1956 1957 1957 1958 1958 1959 1959 1960 1960 1961 1961 1962 1962 1963 1963 1964 1964 1965 1965 1966 1966 1967 1967 1968 1968 1969 1969 1970 1970 1971 1971 1972 1972 1973 1973 1974 1974 1975 1975 1976 1976 1977 1977 1978 1978 1979 1979 1980 1980 1981 1981 1982 1982 1983 1983 1984 1984 1985 1985 1986 1986 1987 1987 1988 1988 1989 1989 1990 1990 1991 1991 1992 1992 1993 1993 1994 1994 1995 1995 1996 1996 1997 1997 1998 1998 1999 1999 2000 2000 2001 2001 2002 2002 2003 2003 2004 2004 2005 2005 2006 2006 2007 2007 2008 2008 2009 2009 2010 2010 2011 2011 2012 2012 2013 2013 2014 2014 2015 2015 2016 2016 2017 2017 2018 2018 2019 2019 2020 2020 2021 2021 2022 2022 2023 2023 2024 2024 2025 2025 2026 2026 2027 2027 2028 2028 2029 2029 Operating Systems Know a missing OS or spotted an error? please email eylenburg@airmail.cc Graph created with Gnuclad Published under the GNU FDL by A. Eylenburg, eylenburg.github.io