UCI chess engine
... the open-source glide computer
GEDKeeper - opensource and crossplatform genealogy management program
Blind Chess using Taiwan rules
TUI games designed as a classroom aid for teaching localization.
PyMancala: A Python API for the Mancala game
The forever free, ad-free and open source chess server
Remake of the classic Caesar III game
LEGADEE (LEarning GAme DEsign Environment)
A D20 combat initiative tracker
A game loosely based on the 1990 game by Sid Meier "Covert Action"