2D Game Engine, based on OpenGL and focused on Isometric Games
Scriptable frontend for media applications.
GameWizzard is a Sprite editor.
Hungry Hero is an open source Flash game built on Starling Framework.
Create your own animated characters for games with ease!
A tool for editing OHRRPGCE RPG files
Open source network game service
3D world editor for game development
Little game background framework in java.
A very small multi-platform game engine for creating desktop games.
An open source skateboard games engine written in C# and .NET.
3D Web UI, Embed Web and Flash in 3D Games, based on WebKit
An extensible development framework for roleplay games.
Pear3DEngine is a modern and modular 3D development framework
Open Source Virtual World and MMOG Development Platform
Phobos editor is a generic resource editing system.
DiaT is a Textadventure
C++ Game programming Framework