ThinkPHP Framework
Complete Open Source and Modular solution for MMO
Lutris desktop client in Python
Arianne is an engine to develop multiplayer online games like Stendhal
A fun realistic multiplayer free-and-open-source first-person-shooter!
GameServer is a sophisticated, game server designed for online games
ChessMD is a Qt-based chess game viewer with engine analysis
Chess Database and PGN viewer
Opengate is a Jumpgate remake
The SCID 5 format in a clean, deterministic, modular architecture
Your collection, your way
Horse racing simulation
TimeBoxing FX: Your productivity at your fingertips π
A modification for Janes USAF
Lucifer: The Ultimate Dev-Ecosystem
Football/Soccer Leagues Manager
Visual Basic 6 2D online adventure game engine
ek- of wkvoetbalmanager
A free 3D game engine to create games and realtimes scenes for Windows
The multiplayer game engine
Maintain logs of model rocket flights and your rocket fleet inventory
Java Settlers
XML-based framework for developing games