Open Source MMORPG Framework
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
CSG for jMonkey
Source code of the chapters of the book 3D Game Development with LWJGL
Reactive extensions for Unity
Asphyre is a cross-platform framework for Delphi and FreePascal.
3D .NET engine for Windows, Linux, Mac
Create symmetric sprites: browse, save to PC, or store online
Multimedia asset management and manipulator for Étoilé
A generic 2D engine for any kind of game
Java Gamepad API for multiple platforms
Modular Gaming Open Source Persistent Browser Based Game Framework
TurboSphere is an easy to learn and powerful JS based game engine.
C++ Framework for slot machine games
Hungry Hero is an open source Flash game built on Starling Framework.
Powerful html5 & javascript library for creating applications & games.
Multi-Language Wrapper Collection for the Irrlicht Engine
AS3 Utilities library (Games Development Framework)
A cross-platform OpenGL based lightweight scenegraph library
AMOS BASIC reimplementation in Java
Cross-platform 2D game engine