Encyclopedias & FAQs
109 sites
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.
http://oldavista.com/
Old'aVista is a nostalgic search engine built specifically for finding old websites from classic hosting services like Geocities, Angelfire, Tripod, and AOL, complete with a retro AltaVista-inspired interface. It indexes a massive database of vintage web content and offers curated directories, top searches, and links to preservation resources like the Internet Archive.
https://digital.library.upenn.edu/books
The Online Books Page, edited by John Mark Ockerbloom and hosted by the University of Pennsylvania, catalogs over 3 million freely available books on the web, searchable by author, title, subject, and serial. It features curated collections highlighting women writers, banned books, and prize winners, making it one of the most comprehensive free ebook directories on the internet.
http://earthstation9.com/index.html?genealo2.htm=
Earth Station Nine is a massive web compendium boasting over 46,000 resources organized across 790 categories and 1,228 pages, drawing from the so-called "invisible web" to surface hard-to-find reference material. Covering everything from genealogy and military history to occult phenomena, health, antiques, and international search engines, it functions as a sprawling research hub for curious minds.
http://wolfbane.com/tv.htm
A comprehensive alphabetical index of thousands of electrical, electronic, and cybernetic brand names and trade marks, maintained by the Wolfbane Cybernetic site as a reference for identifying companies and products. The sheer scope of entries, spanning consumer electronics, broadcast technology, software, and industrial equipment, makes it a remarkable one-stop lookup tool for anyone researching obscure or historical tech brands.
http://geniac.net/odp
Created by ODP editor geniac, this page tracks and compares the growth of the Open Directory Project (DMOZ) and Yahoo Directory through detailed size charts and milestone tables spanning 1998 to 2004. It's a fascinating historical snapshot of the early web directory wars, complete with projected vs. actual crossover dates and a Q&A section explaining the methodology behind the size calculations.
https://zytrax.com/books/dns/ch8/cname.html
ZyTrax hosts a comprehensive technical reference guide covering DNS records, with this chapter dedicated to CNAME (Canonical Name Record) syntax, usage, and zone file examples. Part of a broader open guide by Ron Aitchison, the site spans DNS, LDAP, networking protocols, SSL/TLS, and much more, making it a deep technical resource for sysadmins and network engineers.
https://rlcolem.tripod.com/index-cool.html
A sprawling personal link directory by rlcolem covering dozens of categories including health, government, entertainment, news, music, and museums. Built in classic late-90s tripod style, it curates hundreds of external links organized into neat topic sections, serving as a one-stop gateway to the early web.
http://nongnu.org/chmspec/latest
Edited by Paul Wise and Jed Wing, this unofficial specification documents Microsoft's HTML Help system in exhaustive technical detail, covering the CHM file format, LZX compression, XML structure, and all associated configuration options. Reverse-engineered without NDA restrictions and released under the GNU GPL, it serves as a rare open reference for developers working with or building tools around the proprietary .chm format.
https://faganfinder.com/
Fagan Finder is a comprehensive meta-search portal that aggregates hundreds of search engines, databases, encyclopedias, and specialty search tools into a single organized interface. Visitors can search across mainstream engines like Google and Bing, non-English regional engines, social media platforms, Q&A sites, image and video search tools, and much more, making it an invaluable reference hub for serious researchers.