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BRL-CAD
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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.
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2. |
J&L Associates
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Developers of the ActiveSolid 3D solid modeling, CAD prototyping and mark-up sharware application and the underlying BspSolid modelling library.
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MINOS
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A free 3D solid modelling software offering fast hidden line removal, topological functions, 3D geometric constructions, IGES support, shading, printing, hatches, and line constructions.
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RogCAD
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Keyboard driven modelling software that supports complex curved surfaces.
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5. |
solidThinking
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Modelling software that supports NURBS, polygonal modeling, and subdivision surfaces, available for Windows and Macintosh.
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6. |
TouchCAD
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3D modeling, unfolding and unwrapping program for Macintosh and Windows.
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