Avogadro libraries provide 3D rendering, visualization, and analysis
An interactive viewer for three-dimensional chemical structures.
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
Open Source Solid Modeling CAD
LDraw™ editor for LEGO® style digital building instructions.
CIRT - CUDA Interactive Ray Tracer
Scanning Probe Microscopy Controller and Data Visualization Software
For building cross-platform 3D geospatial apps in Java
Growth-grammar related Interactive Modelling Platform
3D Charts - Templates for PovRay(TM)
Program for drawing 3D surfaces from parametric equations
Functy is a 3D graph drawing package that generates immediate results.
Design and Display Happy Cube solutions
A really simple (following K.I.S.S statement) ray tracing project.