Design and Display Happy Cube solutions
kicad 3D is aimed to add 3D realistic feature on kicad pcb CAD
3d lib
An object oriented 3D graphics API on top of OpenGL
QCSS Player by Shuffle
https://github.com/horde3d/Horde3D
PNNL Waterfall Visualization Tool
Obsolete: use https://github.com/VMML/vmmlib
1st 3D game engine built in C# for .NET, Visual3D Engine's predecessor
A RenderMan-compatible renderer, revived in 2026