Chess Database and Toolkit program
Chess Database and PGN viewer
Zoomable user interface (ZUI) with file manager, file viewers and more
Divine generator of riddles for arrangement.
A promising chess program
A cross-platform chess game.
Dice endgames — generation of endgames with dices.
simple chess game written in C
a UCI chess engine
SJCE - free portable cross-platform graphical chess game, 100% Java.
Chess Database Application
A console/ncurses chess engine frontend and PGN editor.
Sunsetter, a chess, crazyhouse, and bughouse playing program