Vektor3 Chess is a chess program for the Mac with features that include a customizable chessboard with multiple piece sets, multiple documents, multithreading, support for variations, annotation editor with text styles, move annotations and diagrams, several playing levels, opening book, game analysis, position editor, PGN import and export, HTML export, speech, multiple undo and redo, HTML help including rules of chess.
Sigma Chess and Hiarcs announced Sigma Chess 6.1 with HIARCS 9.6 engine for Mac OS X.
This section lists a number of chess programs. I have only included programs for which sources are available. AliBaba (ftp://ftp.cs.rulimburg.nl/pub/software/breuker) Dennis Breuker’s testbed for experiments with heuristics in Alpha-Beta searching. Arasan (http://www.arasanchess.org/) Jon Dart’s Windows program written in C++, since version 6.0 also under Linux. Chenard (http://www.intersrv.com/~dcross/chenard.html) Don Cross’s chess program written […]