UCI chess engine
A generic, simple and fast implementation of Deepmind's AlphaZero
Portable UCI- and XBoard-compatible chess engines.
Chess analysis, training and testing for Windows.
Chess Database and PGN viewer
Scripts and tools for building and testing chess engines.
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
A free Chess program for Windows with a large set of features
The forever free, ad-free and open source chess server
RelaxChess, chess game that makes no search futher needed for a wow
Extensive Java chess database libraries.
Chess Database application
The world's smallest chess playing program just got smaller!
Chess engine, currently in development
A powerful chess engine written in C++
A chess engine in C# using bitboards
A Java chess engine using xboard protocol
Version 1.2
Yet Another Chess ENgine
"Kenny" is an XBoard/WinBoard chess engine based on "Winglet"
Anni is on free open-source C# UCI bitboard chess engine