UCI chess engine
Batch tools for creating Polyglot books and PGN-based statistics.
Tool for chess teachers to create PDF files with chess diagrams in it
NetChess to play between two players over net or internet
Extensive Java chess database libraries.
Java Chess Engine
A weak open source java chess engine
free open-source chess engine interface
OpenGL chess game
A powerful chess engine written in C++
Port of UCI to Javascript
Take the chess graphism, and use it with a chess engine.
A Java chess engine using xboard protocol
A chess application : game with human and/or computer
A simple network chess game
Yet Another Chess ENgine