- avoCADo



- 482 downloads
An open source 3D design and modeling program, avoCADo is a computer aided design program for engineers and artists.
- XTrkCAD Model RR Track Planner



- 351 downloads
Containing libraries of various existing brands and styles, XTrkCAD Model RR Track Planner creates model railroad layouts.
- BRL-CAD



- 144 downloads
A solid geometry and modeling suite, BRL-CAD offers rendering, ray-tracing, image and signal processing tools and more.