Chessmaster Alternatives for Mac

Shane's Chess Information Database is a powerful Chess Toolkit, with which one can create huge chess databases, run engine analysis, or play casual games against the computer or online with the Free Internet Chess Server.

XBoard, also known as WinBoard on Microsoft operating systems, is a free graphical user interface client developed by Tim Mann that is compatible with various chess engines that support the Xboard Communication Protocol such as GNU Chess.

Open source chess database.

The Shredder chess programs by Stefan Meyer-Kahlen provide a game playing and analysis tool for everybody and are accepted as one of the best chess programs of the world.

World class chess database, analysis and playing software for PC and Mac.

DreamChess is an open source chess game featuring "Dreamer", a moderately strong engine. Any XBoard-compatible chess engine (Crafty & GNU Chess) will work for varying degrees of difficulty. Includes 3D OpenGL graphics and various board sets.

Jin is an open source, cross platform, graphical client for chess servers, written in Java. Jin can run either as a standalone application (available at this website) or as an applet, directly from your browser (available at the chess server's website).

Play, learn and have fun with a free online chess game designed for everyone, regardless of their level. Improve your skills with various AI opponents or challenge your friends in multiplayer!.

ChessDB - a free Chess database for Mac OS X, Windows, Linux, and UNIX - like ChessBase , but better.

SkillGamesBoard.com offers a perfect opportunity to play free skill and board games like chess, checkers, reversi, and go against your friends online or other players worldwide.