UCI chess engine
Portable UCI- and XBoard-compatible chess engines.
Prebuilt UCI- and XBoard-compatible chess engines.
Scripts and tools for building and testing chess engines.
A simple tool to allow Chessmaster 10/11 bot customizations
a UCI chess engine
A console/ncurses chess engine frontend and PGN editor.
icsdrone is an interface between a chess server and a chess engine
The world's smallest chess playing program just got smaller!
A powerful chess engine written in C++
Version 1.2
Yet Another Chess ENgine
"Kenny" is an XBoard/WinBoard chess engine based on "Winglet"
A java-based, purely object-oriented chess engine.
Chess game interface
Anni is on free open-source C# UCI bitboard chess engine