UCI chess engine
Chess Database and PGN viewer
Chess application whichs allows working with chess PDF books and PGNs.
NetChess to play between two players over net or internet
a UCI chess engine
Chess program
Julia chess programming library
SJCE - free portable cross-platform graphical chess game, 100% Java.
Chess for the Blind for the JAWS or NVDA Screen Readers
MOBMAT chess engine
Java Chess Engine
Chess engine
An extremely strong chess engine.
Port of UCI to Javascript
A powerful chess engine written in C++
Chess engine
Yet Another Chess ENgine
UCI chess engine
Anni is on free open-source C# UCI bitboard chess engine