Chess Software

Chess Mentor
Facilitates chess learning and the development of playing tactics and strategies. With demo and reviews.
ChessGenius
Chess software available in iPhone, iPod, Palm, Windows Mobile, Symbian, and UIQ versions.
Kebu Chess Tactics
Chess software offering ways to study tactics and memorize openings.
Shredder Computer Chess
Provides chess programs for the PC, Mac, Linux, and iPhone platforms. With featured puzzles and weekly chess problems.