Cdw - cdw: ncurses interface for GNU/Linux command line CD/DVD tools
SketchUp - 3D for Everyone
DDS-CAD - DDS-CAD: The Open BIM solution for MEP engineers.
Assetforge - Asset Forge allows anyone to create 3D models and 2D sprites using building blocks.
Applied Software - Prepare to work with an industry champion! Applied Software specializes in bridging the technology divide from product to productivity no matter your industry.
FreeCAD - An open-source parametric 3D modeler