Open Source MMORPG Framework
CTFs as you need them
Arianne is an engine to develop multiplayer online games like Stendhal
Vivid3D is a C++ IDE/3D engine, with python scripting.
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Event driven concurrent framework for Python
The second demo of my game engine.
3D .NET engine for Windows, Linux, Mac
evolution for vegastrike SpaceSim/Combat/Trade game
c# lua bind with unity3d project for game development
Free strategy browsergame engine.
AutoTeach makes kids study and learn in exchange for internet access.
Modular Gaming Open Source Persistent Browser Based Game Framework
Library for creating turn-based games with simultaneous moves.
Pygrid is an open-source and cross-platform pygame/python 2D engine.
Open source network game service