A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
CM Game Development Kit
The CMGDK is an game engine useable in C++11. It is completely cross-platform, using OpenGL Core 3.3(need DSA,VAB) and OpenAL.