Chess Programs & Utilities - http://www.enpassant.dk/chess/softeng.htm
Chess-Playing Programs - http://aharris.org/chess/programs.html
Chess Playing Programs and Engines - http://www.chessaid.com/chess_download/software/?scl=Chess+Playing+Programs+and+Engines
Chess Software Download - http://www.chessaid.com/chess_download/software/?scl=Chess%20Playing%20Programs%20and%20Engines
Chess Programs - http://www.angelfire.com/nf/chess/programs.html
Chess Playing Software Programs - http://www.chesscentral.com/software/chess_playing_software.htm
GNU Chess Free Download - http://www.softlookup.com/display.asp?id=37912
http://www.chesscorner.com/reviews/software.htm
Rec.games.chess.misc FAQ - http://www.drpribut.com/sports/chessfaq.html
Armageddon Chess - http://www.armageddon.szach.pl/
XBoard and WinBoard - http://tim-mann.org/xboard.html