TX Library is a tiny graphics library for Win32 written in C++.
Orx: Data-Driven Game Engine
X3D Prototypes for the SMUOS Component
Build Cross-platform Applications
Generate ready-to-use disc images for your Sega Dreamcast system!
Asphyre is a cross-platform framework for Delphi and FreePascal.
IRB is a game creation toolkit
Flexible and easy-to-use 2d game engine
c# lua bind with unity3d project for game development
Toolkit for the easy prototyping of hybrid games for Tabletop Devices
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
Multimedia asset management and manipulator for Étoilé
2D Game Engine, based on OpenGL and focused on Isometric Games
Pear3DEngine is a modern and modular 3D development framework
Phobos editor is a generic resource editing system.
C++ Game programming Framework
Fully fledged steam community SDK
Investigo - DX9 Performance and Debugging Toolkit
A cross-platform OpenGL based lightweight scenegraph library