UCI chess engine
Prebuilt UCI- and XBoard-compatible chess engines.
Portable UCI- and XBoard-compatible chess engines.
Scripts and tools for building and testing chess engines.
Batch tools for creating Polyglot books and PGN-based statistics.
NetChess to play between two players over net or internet
A simple tool to allow Chessmaster 10/11 bot customizations
a UCI chess engine
A console/ncurses chess engine frontend and PGN editor.
MOBMAT chess engine
Extensive Java chess database libraries.
Java Chess Engine
icsdrone is an interface between a chess server and a chess engine
A weak open source java chess engine
free open-source chess engine interface
Port of UCI to Javascript
OpenGL chess game
A powerful chess engine written in C++
Take the chess graphism, and use it with a chess engine.