ChessDB - ChessDB - a free Chess database for Mac OS X, Windows, Linux, and UNIX - like ChessBase, but better
8 Ball Pool - Pool 8-ball is a billiards simulator.
Lichess - The complete chess experience, play and compete in tournaments with friends others around the world.
Virtual Pool - A pool game so realistic, it improves your real game!
DecodeChess - AI chess tutor and analysis
FooBillard - FooBillard is a free and open-source, OpenGL-based billiards simulation game.