GNUChess
GNU Chess, GNU Chess version 4.0b5 for Apple Mac, Official site for GNU Chess by the Free Software F, Tim Mann's Chess Page - GNU Chess
Multiplayer
Blitzin, Checkmate, Chess Client, Chess program Pirat, CompuChess, Dorky Chess, Icarus, iNemesis, InterChess, LightningRulez
Winboard and Xboard
A Tribute to Winboard, Beowulf, Delfi, Esc, Faile, Fortress, Gargamella, GES, Golem, Green Light Chess
ANS Forth Chess
Very simple, free chess program written in ANS Forth, by Jeff Fox of UltraTechnology.
JohnGin Chess
Offers a screenshot, game description, and download.
Victorian Chess Pages
This page has demo versions of several chess related programs written by Fide Master and ex Australian correspondence champion Bill Jordan.