Chesley is a chess engine targeting Unix-like platforms and the xboard GUI. It implements a number of modern chess programming techniques, including bitboard move generation, transposition tables, etc.
8 Kingdoms is a 3D turn-based fantasy strategy game, where lords have to build their empires and conquer enemy kingdoms.
SDL-Shooter is an old-school shoot'em'up game. Source code and a development tutorial are included, making it easy to extend.
A PostgreSQL JDBC driver.
A simple annotation-driven command line parser toolkit for Java 5 applications.