Open Source Solid Modeling CAD
An interactive viewer for three-dimensional chemical structures.
Realtime raytracer using SIMD on ARM, MIPS, PPC and x86
rayshade and POV for Mathematica Export + view
Viewer and exporter for Unreal Engine 1-4 assets
A shader-based software renderer written from scratch in C89
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
3D Software Renderer in 700 Lines
Pear3DEngine is a modern and modular 3D development framework
PixelLight is a cross-platform application framework
The software for solving special problems of mathematics and physics
A 3D rendering / entity engine