Foobillard is a great looking and playable implementation of pool and snooker. It was designed to simulate the real physics of playing pool and snooker games.

Foobillard has some great looking graphics like reflections and shadows, supports network play, AI player, has 4 game types (8 ball, 9 ball, snooker and carambol).

This really is a great implementation and worth a look. The Linux version is well supported but the Windows and Mac OS X versions arn't up with the latest version, currently 3.0a