UCI chess engine
GUI of chess
Chess Database and PGN viewer
Chess Database and Toolkit program
Chess application whichs allows working with chess PDF books and PGNs.
Zoomable user interface (ZUI) with file manager, file viewers and more
A GNU/Linux operating system accessible for visually impaired.
A free Chess program for Windows with a large set of features
ChessMD is a Qt-based chess game viewer with engine analysis
Elo Calculator - strictly implemented FIDE Rating Regulations
A promising chess program
Chess program
javascript chess games viewer for websites, blogs and live broadcasts
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Edit diagram.sty LaTeX diagrams
Blind Chess using Taiwan rules