How to Mine the Invisible Web: The Ultimate Guide

The invisible/deep web refers to the vast amount of information that isn't easily discoverable in a general search engine query. This might include databases, private networks, and password-protected data.

However, there are a wide variety of high-quality invisible web search tools and directories that can help you mine this fantastic resource that's considered to be thousands of times larger than the visible/surface web.

The following invisible web resources will connect you to a virtual goldmine of knowledge. Each link connects you to a resource that helps you find information that isn't easily found with just a simple, rudimentary search, so that you can dive deep into untapped treasure troves of information. 

• Invisible Web Directories: Many individuals and institutions have put together web directories that you can use as a jumping off point to surf the deep web.
• Invisible Web Search Engines: Several of the best search engines for the invisible web where you can find government details, science and math information, old websites, site rankings, and more.

• Wikipedia Alternatives: Wikipedia is perhaps the most popular reference site online, with countless high-quality articles available on virtually any topic.
• Google Scholar: A search engine from Google that you can use to search across many disciplines and sources: peer-reviewed papers, books, abstracts, and articles, from academic publishers, professional societies, preprint repositories, universities, and other scholarly organizations.

• Invisible Web People Search Tools: Jump into the deep web to find information on people you know, or even on strangers.
• People Search Engines: Finding people on the web is getting easier and easier, and this is a list of the best free and paid options.
• Free People Finder Resources: These methods for finding people using the invisible web are completely free.

• US Government Websites: There are hundreds of thousands of US government and government-related websites that offer free access to a wide variety of information.
• How to Find Public Records: Here are the best free public record search databases online, from obituaries to census records.
• How to Do a Free Background Check: Run a free deep web background check that queries a multitude of sources.

• How to Find Works in the Public Domain: Public domain books are books where the copyrights have passed into the public domain, meaning that they can be used, reproduced, or incorporated in any way without any restrictions.
• Where to Find Free Audiobooks: Audiobooks are similar to public domain eBooks. There are tons of them available on the invisible web.