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BRL-CAD
An open source csg solid modeling system with ray tracing support for rendering and geometric analysis , network distributed framebuffer support , image-processing and signal-processing tools.
brlcad.org | | J& L Associates
Developers of the activesolid 3d solid modeling , cad prototyping and mark-up sharware application and the underlying bspsolid modelling library.
activesolid.ncf.ca | | MINOS
A free 3d solid modelling software offering fast hidden line removal , topological functions , 3d geometric constructions , iges support , shading , printing , hatches , and line constructions.
www.le-boite.com/minos.htm | | RogCAD
Keyboard driven modelling software that supports complex curved surfaces.
rogcad.com | | solidThinking
Modelling software that supports nurbs , polygonal modeling , and subdivision surfaces , available for windows and macintosh.
www.solidthinking.com | | TouchCAD
3d modeling , unfolding and unwrapping program for macintosh and windows.
www.touchcad.com | |
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