TX Library is a tiny graphics library for Win32 written in C++.
A free 3D game engine to create games and realtimes scenes for Windows
Small lightweight program to customize your keyboard
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
A 2D game engine and level editor
Build Cross-platform Applications
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Perl bindings to the Modern OpenGL API
Gaming library
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
Multimedia asset management and manipulator for Étoilé
Cross-platform C framework very compact libraries and tools.
3D Game engine
2D Game Engine, based on OpenGL and focused on Isometric Games
A game development kit for Sifteo Cubes.
3D game engine for C and C++
Extremely simple joystick rumble / vibration library
Game development toolkit