JavaScript 3D library
Avogadro libraries provide 3D rendering, visualization, and analysis
Open Source Solid Modeling CAD
An interactive viewer for three-dimensional chemical structures.
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
LDraw™ editor for LEGO® style digital building instructions.
C++ header-only library that simulates GLSL math
Interactive 3D Layout Viewer for GDSII
Source code for efficiently rendering parametrically defined surfaces
3D rendering and scene graph library (moved to GitHub)
3D Software Renderer in 700 Lines
Pear3DEngine is a modern and modular 3D development framework