A (La)TeX encyclopaedia from Loria. Also available in French and German.
AMS TeX Resources
TeX-related style file collections, fonts, manuals, and author packages for preparing submissions to American Mathematical Society publications. Platforms: PC (DOS and Windows), Macintosh (for Textures, OzTeX or CMacTeX), and Unix.
Achim Blumensath: Download
Contains manual and source code for Ant which is a typesetting system similar to TeX written in Objective Caml. Various LaTeX packages are also available.
The TeX Archive Network is a set of fully-mirrored ftp sites providing the most complete, up-to-date TeX-related software possible.
Online search interface for CTAN. Search CTAN for a file or search the TeX catalogue by Graham Williams for a keyword.
Donald Knuth's Reward Check
An example of a reward check by DEK and how to get one.
Interesting TeX-related URLs
Maintained by TUG.
Knuth: Message about TeX Fonts
Important message to all users of TeX.
Mathematics For Computer Generated Spoken Documents
AsTeR --Audio System For Technical Readings-- is a computing system for rendering technical documents written in LaTeX in audio.
Some TeX Developments
A blog about LaTeX written by Joseph Wright who is a member of the LaTeX Project with a particular interest in LaTeX3 development.
Merchandising for TeX and friends. On-line ordering with PayPal.
Examples of professional TeX typesetting of books in the humanities, selected by the Association of American University Presses.
TeXblog - Typography with TeX and LaTeX
Collects useful information about TeX and LaTeX and lists solutions found for often occurring or interesting problems. Further it provides an archive of links regarding TeX and LaTeX.
The TeX Catalogue Online, CTAN Edition
This catalogue lists many TeX, LaTeX, and related packages and tools. Most are available world wide online from CTAN, the TeX Archive Network.
The TeX showcase
Edited by Gerben Wierda, it contains examples of what you can do with TeX, from typesetting of scientific papers to music, multimedia, genealogical presentations, dynamic documents, multilingual documents.
The TeXability Site
Shows short (mostly single page) documents with immediate access to graphical results and source to demonstrate the power of TeX.