Awaretek has released its first application for the Mac computer. It allows you to re-play grand master chess games move by move, with accompanying analysis. You can also take over and play either side from any point in the game.
You can also keep track of your chess games using this chess database program. Includes the ability to open, edit and save PGN files containing a list of games. You can annotate your games and analyze them with a chess engine.
Chess Database is available from the Apple app store for $9.99.