Arianne is an engine to develop multiplayer online games like Stendhal
JavaScript framework to build game engines, games, emulators and apps
Java Settlers
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Event driven concurrent framework for Python
2D game engine for traditional platform games
Single-/multi-player card game Mau Mau (similar to UNO®)
C++ game libraries plus server.
A retro style video game engine for RPGs and adventure games.
Open Source Virtual World and MMOG Development Platform
Cross-platform 2D game engine
Game framework on top of Python, Panda3D and Twisted
Ragnarok Cliente nativo para Gnu/Linux