SLDPRT - SolidWorks 3D part model (had.S3G - GCode instructions for MakerBot firmware below 7.0.Revit - AutoDesk Revit files (RVT, RFA).PRT (UG) - Unigraphics, Siemens PLM, NX CAD.PRT (PTC) - Pro/Engineer, Pro/E Wildfire, Creo Parametric.
ASC - BRL-CAD Geometry File (old ASCII format).Argon - Ashlar-Vellum (AR) - 3D Modeling.
ACP - VA Software VA - Virtual Architecture CAD file.3DXML - Dassault Systemes graphic representation.3DMLW - (3D Markup Language for Web) files.VRML - Virtual reality modeling language (.wrl).Universal Scene Description - Pixar USD.TDDD - Turbo Silver 3D Data Description, T3D.sbsar) - used by Substance family of programs, and found in Substance Source library SLDPRT - SolidWorks Part Document (.sldprt).SLDASM - SolidWorks Assembly Document (.sldasm).SKN/BMF - A 3D mesh format associated with The Sims.SGO - Silicon Graphics Object, Showcase.SGI YAODL - Yet Another Object Description Language, Power-Flip Format.Sense8 NFF - WorldToolkit Neutral File Format.RIB - RenderMan Interface Bytestream / Pixar / 3D Reality.RenderWare binary stream file (.dff) - commonly used by Grand Theft Auto III-era games as well as other RenderWare titles.QRT Ray Tracer scene description (.qrt).PRT scene description - Parallel Ray Trace.POV-Ray density file - Persistence of Vision Raytracer (.df3).POV-Ray scene description - Persistence of Vision Raytracer (.pov).P3D (PSC) - Pittsburgh Supercomputer Center 3D Metafile.Outerra engine (.otx) (used in Anteworld game).MDX - Blizzard Entertainment's own model format (.mdx).MD4 - Quake MD4 model format (used in later Quake 3 versions) (.md4).Maya scene - Autodesk Maya ASCII or Binary File (.ma.MAX - Autodesk 3D Studio Max file (.max).LXO - Luxology Modo (software) file (.lxo).