Chesstr.com: Chess Problems and Tactics - An online database of user-submitted chess problems grouped by tactical motif. Features daily problems, aesthetic ratings, and a kibitzing forum. - http://www.chesstr.com
CompWebChess - CompWebChess is an open source chess program and application which allows users to play chess over the internet. - http://www.compwebchess.com
Chess On The Web - Play correspondence chess online against fellow chess enthusiasts. - http://www.chessontheweb.com/chess/home
Chess5 - With Chess5 you can store your chess games online and send them by email, or let other members evaluate your chess games. - http://www.chess5.com
ChessGames.com - Free, searchable chess game database and community. - http://www.chessgames.com
Online Chess at Lokasoft - Play a game of chess against Lokasoft's chess program or solve a chess quiz. - http://www.lokasoft.nl/play.htm
Play against tkChess - Play chess against a computer at Yale. - http://pine.cs.yale.edu/cgi-bin/cp
Electric Chess - Web based play-by-email site with instructions and statistics. - http://www.electricchess.net/
Postcard Chess - Offers correspondence chess with web based postcard system. Includes book store, problems and a chess playing CGI program. - http://www.postcardchess.com/
eChess.org - Browser based chess service that makes it possible to play chess through email. - http://echess.org/
uChess - Global community of blitz chess players. Includes chat and game analysis tools. - http://www.uchess.com/
ChessHere.com - Browser based online chess with database, forums and links. - http://www.chesshere.com/
Scheming Mind - Club offering correspondence chess and variants in-browser. - http://www.schemingmind.com/
Real Chess - Offers Beholderboard and Webchess, also links, shopping, and forums. - http://www.realchess.com/
Chess Mail - E-mail and browser based correspondence chess with multilingual ability. - http://www.chessmail.org/
ChessAge.com - Offers correspondence chess, tournament reports including online game replay, opening database, and discussion forum. - http://www.chessage.com/
Queen Alice Internet Chess Club - Community of correspondence chess players of all levels and ages. Only a web browser is required to play. - http://www.queenalice.com/
ChessWorld.net - Web based play-by-email server. Features include tournaments, leagues, forums, voting, and annotated games. - http://www.letsplaychess.com/chessclubs/asplogin.asp
GameKnot Chess - Online chess community. Online play, tournaments, chess league, and thematic mini-tournaments. - http://gameknot.com/
PlayChess - Offers private chess games with list of challengers, tournaments, PGN downloads, message boards, and directory of annotated games. Requires paid membership and includes free trial as a guest. - http://www.playchess.de/
SoundChess - Email chess application playable against a friend. - http://www.soundkeepers.com/chess/e_mail_chess/index.php3
TheChessKing.com - Online turn-based chess games played against live opponents. Includes player rankings. - http://www.thechessking.com/
BrowserChess - Online chess game playable against the computer or other players. Includes message board and Hall of Fame. - http://www.browserchess.com/
ChessManiac.com - Offers turn-based correspondence chess. Also has a forum. - http://www.chessmaniac.com/
ChessAnyTime.com - Free online chess game played against live opponents. Includes top 100 players list. - http://www.chessanytime.com/
World Chess Network - Play online chess with opponents from beginners to grandmasters. World Chess Network provides free online chess and premium feature rich chess games, lectures, and interactive activities. Windows-only. - http://www.worldchessnetwork.com/
Chess.net - Free site with for-pay premium services. Requires client which can be downloaded (Windows only) or play with Java client in browser. (Does not appear to work on Macintosh.) - http://www.chess.net
Chess World - Play a casual game or participate in one a tournament (thematic, round robin, swiss system). Games can be timed or not. There is a test area where you can go to play a few moves in non-counting games just to see how the site works. - http://www.very-best.de/PC.htm
The London Chess Center - Home base for two British publications, The Week In Chess (TWIC) and Chess Monthly. Downloadable games to study and move-by-move analysis of live events. - http://www.chesscenter.com
Kung Fu Chess - A new fast-action version of chess where both players move simultaneously. Registration is required to play. - http://www.kungfuchess.com
InstantChess.com - Play chess online - The computer automatically pairs you up with an opponent from around the world. No registration is required. - http://www.instantchess.com
GrandMaster Chess - Grandmaster site of 1999 FIDE World Chapmpion Alexander Khalifman and other top Grandmasters. Instruction, news, links, gamebase, and puzzles. - http://www.gmchess.com/
MindZine - Chess News - Chess news and articles from all around the world by Mind Sports Worldwide. News, features, polls, updated roundups of other chess Web site contents. - http://www.msoworld.com/mindzine/news/chess/chess.html
Gambit Chess - Specialty site devoted to chess players who enjoy playing various opening gambits. Features online play in gambit-themed tournaments, notes, articles, analysis. - http://www.gambitchess.com/
Chessplayer.com - Presented by 1994 US Open Champion IM Georgi Orlov. Instruction, articles, and puzzles. - http://www.chessplayer.com/
Exeter Chess Club - Advice and discussions of opening strategy, sorted by chess rating relevance. - http://www.ex.ac.uk/~dregis/DR/
Red Hot Pawn - Online correspondence chess played against friends or other members. Includes community forum and email notification of moves. - http://www.redhotpawn.com/
Chess Lab - Play Chess real-time online. No downloads needed. Search and analyse over 2 million chess games in current database. Does not behave well on Macintosh, particularly with System 9+ and not at all with IE. - http://www.chesslab.com
Net-Chess - Host server for correspondence games and sets of related matches. Email notification, ratings, user-selectable interface design. - http://www.net-chess.com
How Stuff Works - Several short articles illustrating how computers play chess. Very basic and easy to understand. - http://www.howstuffworks.com/chess.htm