Crafty Mac 18.08 text - [Freeware] Master strength chess engine, text interface only. Updated March 2001.
Crafty 14.11B - [Freeware] Version of Crafty with code added so that ExaChess can be used as a GUI interface and computer-computer umpire.
MacChess - [Freeware] Master strength freeware program, ExaChess compatible, and with English/German/Dutch/Italian versions available.
GNUChess 4.0b5 - Freeware download, expert-strength Mac chess program.
MacUpdate: ChessMate 6.3.5 - ChessMate 6.3.5 - Play chess against your computer or friend.
MacUpdate: ChessKing 1.0 - ChessKing 1.0 - Challenge a friend to a game of chess.
Screamer - [Freeware] Master strength program, also works as ExaChess engine.
Chessmaster 9000 Mac - [ $40 commercial] Grandmaster strength, many training features. OS X 10.2+ and DVD drive required. Released Dec. 2004.
MacChess - chess on Mac - Lists software for Mac OS X, classic, X11 and pre-OS X. Includes information for compiling and configuring X11 and XBoard based applications.
HIARCS 7.0 - [Commercial - $48] Macintosh OS9/Classic version of a former world champion chess program.
j2chess 2.7 - [Freeware] Simple OS/X chess game / PGN viewer in Java. Updated 27 Nov 2006
RChess 2.2.3 - [Freeware] Chess playing program with many easy levels for beginners to win against.
HIARCS 11.0 - [Commercial $50/$100] Strongest Macintosh chess program, in UCI engine form for Mac OS/X. Single and multiprocessor versions. [Out Apr. 2, 2007]
Shredder - Commercial [ $30-$100] The Macintosh version of the 2005 World Computer Chess Blitz champion. Downloadable Demo, Universal bineary. Updated 2006.
Gambіt 1.01 - [Shareware $20] Mac OSX Front end to Crafty with PGN browser. Updated 12-13-05.
Glaurung and Scatha - [Freeware] UCI GUI with two engines: Glaurung (normal chess), Scatha (Glinski's hexagonal chess), requires OSX 10.3.9+
Vektor3.2.2 - [Shareware-$19] Voice command and voice output options, adapts to the user's strength. Exachess compatible. Requires OSX.
Vanessa Chess 2.1.1 - [Freeware] This is a multi-document, multi-threaded chess application for Mac OS Classic PowerPCs ( Mac OS 8.6-9.2)
ChessPuzzle 2 - [Free] OS X Dashboard ChessPuzzle Widget [OS 10.4 required] with 6,000 puzzles and Sjeng chess engine
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