3D Game engine
Multi-threaded 2D Renderer licensed under the Mozilla Public License
C++ Framework for slot machine games
A world editor for HGE game engine written in python and uses OpenGL.
This pack add's custom object and rides into your "RCT3 Platinum" game
A game development kit for Sifteo Cubes.
A retro style video game engine for RPGs and adventure games.
GameWizzard is a Sprite editor.
Hungry Hero is an open source Flash game built on Starling Framework.
3D world editor for game development
Phobos editor is a generic resource editing system.
Allows the Sourcemod FunCommands to be limited
Pear3DEngine is a modern and modular 3D development framework
Open Source Virtual World and MMOG Development Platform
cross-platform 2d game engine
Investigo - DX9 Performance and Debugging Toolkit
A cross-platform OpenGL based lightweight scenegraph library
Delphi-like IDE for cross-platform game development
AMOS BASIC reimplementation in Java
Sourceport of the classic Descent Level Editor