High-efficiency minimalist C++ wrapper for OpenGL 4.3
Game engine supporting many 3D/2D formats and graphic effects
A free 3D game engine to create games and realtimes scenes for Windows
2D Game Engine
Perl bindings to the Modern OpenGL API
Mahasona engine is an open source game engine.
Small OpenGL based game enegine
3D game engine for C and C++
A graphics engine + toolkit.
3D world editor for game development
NinYawg Adventure
Pear3DEngine is a modern and modular 3D development framework
CM Game Development Kit