UCI chess engine
Tool for chess teachers to create PDF files with chess diagrams in it
Chess training program playing gambits
Batch tools for creating Polyglot books and PGN-based statistics.
NetChess to play between two players over net or internet
a UCI chess engine
Python chess engine
A console/ncurses chess engine frontend and PGN editor.
EXCEL VBA chess engine with chess board
Extensive Java chess database libraries.
Java Chess Engine
icsdrone is an interface between a chess server and a chess engine
The world's smallest chess playing program just got smaller!
A weak open source java chess engine
Chess engine, currently in development
free open-source chess engine interface
An extremely strong chess engine.