Chess

Play correspondence chess online against fellow chess enthusiasts.

Multiplayer software for using WinBoard, Xboard and other FICS interfaces to play on Yahoo! Chess.

Commercial [ $30-$100] The Macintosh version of the 2005 World Computer Chess Blitz champion. Downloadable Demo, Universal binary. Updated Jan 2010.

An interface for FICS. Quite featureful. GPL, Unix/Linux only.

Knights is a relatively new graphical chess interface for KDE. It is, however, already quite featureful and very nice looking. Doubles as a chess engine front end. GPL, Unix (KDE) only.

The Chess Programming Wiki is a repository of information about programming computers to play chess.

Computer chess engine tournament called Open War.

3D Chess game that lets you play against the computer or against opponents across the Internet. Has various levels of play and can take many challenges. [Win 95/98/Me/NT/2000]

[Free] Palm chess with several chess engines (Fruit,GNUChess,Toga,Phalanx,Scorpio - [V3.0RC2 1/2007]

[Freeware] Graphical interface for the free internet chess servers.

Review of Sigma Chess Lite 5.12, Vanessa Chess 2.01, with tournament results.

Discusses game collections, software, chess database, starting sites.

A graphic interface program. Includes news, FAQs, and downloads.

Chess engine for Winboard/Xboard. Has basic opening book and adjustable hash size.