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Encyclopedias & FAQs

109 sites


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Ciphers and Codes
https://rumkin.com/tools/cipher
Tyler Akins' Rumkin.com hosts a comprehensive collection of browser-based cipher and code tools, covering everything from classic substitution ciphers like Caesar and Atbash to more obscure ones like Playfair and Übchi. Each tool automates the encoding and decoding process while explaining the underlying logic, making it a valuable reference for cryptography hobbyists and puzzle enthusiasts alike.
Resource 2026-03-13
https://gnupg.org/gph/en/manual/x56.html
https://gnupg.org/gph/en/manual/x56.html
A chapter from the GNU Privacy Handbook covering the essentials of exchanging public keys using GnuPG, including exporting, importing, and validating keys via command-line tools. The guide walks through practical examples with real GPG commands, making it a valuable reference for anyone learning to use public-key cryptography with GnuPG.
Resource 2026-03-13
Search Engines of the World
http://searchenginesoftheworld.com/
Search Engines of the World is a long-running directory cataloging internet search engines organized by geographic region, covering Africa, America, Asia, Australasia, Europe, and global resources. Dating back to 1996, it serves as a reference for finding region-specific search tools from around the globe.
Directory 2026-03-12
https://blue-pages.bitbucket.io/
The Blue Pages is a curated old-web and indie-web directory that functions like a digital yellow pages, listing sites across dozens of categories including tilde servers, webrings, Gemini/Gopher hosts, and retro communities. Built as an alternative to algorithm-driven search engines, it embraces pure human-curated web indexing with a nostalgic small-web philosophy.
Directory 2026-03-13
JewishEncyclopedia.com
https://jewishencyclopedia.com/
JewishEncyclopedia.com hosts the complete digitized contents of the 1906 Jewish Encyclopedia, covering thousands of entries on Jewish history, religion, culture, biography, and geography. An invaluable reference resource, it provides free public access to a monumental work of scholarship that remains remarkably relevant despite its age.
Resource 2026-03-12
Clay Shirky | Ontology is Overrated
http://web.archive.org/web/20130729231420id_/http://itc.conversationsnetwork.org/shows/detail470.html
This page from the Conversations Network hosts a recorded talk by Clay Shirky titled 'Ontology is Overrated,' captured at the O'Reilly Emerging Technology Conference in 2005. Shirky, a noted writer and consultant on decentralization and social software, delivers a 44-minute audio presentation exploring why rigid classification systems are being challenged by the social web.
Resource 2026-03-12
http://web.textfiles.com/
http://web.textfiles.com/
Jason Scott's web.textfiles.com is a sprawling archive of historical text files covering hacking, phreaking, e-zines, humor, virus research, and underground computing culture from the BBS era and beyond. It's an essential digital preservation project cataloging thousands of documents that capture the raw, unfiltered voice of early internet and hacker subcultures.
Resource 2026-03-12
The Search Engine Map
https://searchenginemap.com/
The Search Engine Map is an interactive visual reference that maps all English-language search engines, showing what type each is and where they source their organic results. It distinguishes crawler-based engines from metasearch engines and illustrates the relationships between them in a network graph format.
Resource 2026-03-13
Home - Ripped
https://ripped.guide/
Ripped is a community-curated guide to trusted sites and tools for ripping and archiving media, covering everything from CD audio ripping with EAC to manga, e-books, games, anime, and movies. It serves as a structured reference directory for private trackers, scene terminology, and platform-specific software across PC, Android, iOS, and consoles.
Resource 2026-03-13
Blogs about Science (ooh.directory)
https://ooh.directory/blogs/science
Created and maintained by Phil Gyford, ooh.directory is a curated collection of blogs organized by topic, with this section dedicated to science covering earth science, mathematics, space, medicine, and the natural world. Visitors can filter entries by country and update frequency, making it a handy hub for discovering active science blogs and subscribing via OPML or RSS.
Directory 2026-03-11