Multi-Language Wrapper Collection for the Irrlicht Engine
Formerly CraveJs, it's for creating JavaScript applications and games.
AS3 Utilities library (Games Development Framework)
SDK for Resident Evil Games
A cross-platform OpenGL based lightweight scenegraph library
AMOS BASIC reimplementation in Java
Delphi-like IDE for cross-platform game development
Cross-platform 2D game engine
A framework for games with defense towers along a path.
Tween for Torque
Sourceport of the classic Descent Level Editor
A cross platform 3d c++ game engine
Game framework on top of Python, Panda3D and Twisted
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Read and write PGN format and test moves for legality.
Basic real-time simulation engine in C++
The Lambda-Engine is a cross platform game engine.