Multi-platform 2D and 3D game engine
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
... the open-source glide computer
Orx: Portable Game Engine
This is home for bulded from fresh sources SCUMMVM for Symbian S60
Open-DIS implements the IEEE DIS protocol in multiple languages.
a very lightweight advanced terrain-rendering and 3D map rendering sys
PixelLight is a cross-platform application framework
A cross-platform OpenGL based lightweight scenegraph library
Cross-platform 2D game engine
X-Plane plugin which controls the Saitek Instrument Panel