Avogadro libraries provide 3D rendering, visualization, and analysis
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
An interactive viewer for three-dimensional chemical structures.
Realtime raytracer using SIMD on ARM, MIPS, PPC and x86
Interactive 3D Layout Viewer for GDSII
Tiny but powerful single file wavefront obj loader
Pear3DEngine is a modern and modular 3D development framework
PixelLight is a cross-platform application framework
osGraphX is a 3D file viewer based on openscenegraph.