Sar Dar 27 Jun, 2018 01:23 AM BRL-CAD - 3Dhttp://brlcad.org/File Support: Import: DXF, Elysium Neutral Facetted, EUCLID, FASTGEN, IGES, Jack, NASTRAN, Pro/E,[11]STL, TANKILL, Unigraphics, Viewpoint Datalabs Format Export: DXF, EUCLID, IGES, Jack, STL, TANKILL, VRML, OBJ, X3D Pros:Cons: Runs on: Windows Mac OS X Linux BSD Solaris