UCI chess engine
ChessMD is a Qt-based chess game viewer with engine analysis
Chess Database and PGN viewer
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
NetChess to play between two players over net or internet
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SJCE - free portable cross-platform graphical chess game, 100% Java.
The forever free, ad-free and open source chess server
Chess Database application
Extensive Java chess database libraries.
Java Chess Engine
The world's smallest chess playing program just got smaller!
A collection of all maps and games made for the TripleA game engine
An online multiplayer turn based strategy game and board game engine.
Next generation web chess club
A weak open source java chess engine
free open-source chess engine interface
A powerful chess engine written in C++
OpenGL chess game
Port of UCI to Javascript