3D and CAD/CAM Models

3D Modeling
3DMF - QuickDraw 3D Metafile (.3dmf) 3DM - OpenNURBS Initiative 3D Model (used by Rhinoceros 3D) (.3dm) 3DS - Legacy 3D Studio Model (.3ds) AC - AC3D Model (.ac) AMF - Additive Manufacturing File Format AN8 - Anim8or Model (.an8) AOI - Art of Illusion Model (.aoi) B3D - Blitz3D Model (.b3d) BLEND - Blender (.blend) BLOCK - Blender encrypted blend files (.block) C4D - Cinema 4D (.c4d) Cal3D - Cal3D (.cal3d) CCP4 - X-ray crystallography voxels (electron density) CFL - Compressed File Library (.cfl) COB - Caligari Object (.cob) CORE3D - Coreona 3D Coreona 3D Virtual File(.core3d) CTM - OpenCTM (.ctm) DAE - COLLADA (.dae) DFF - RenderWare binary stream, commonly used by Grand Theft Auto III-era games as well as other RenderWare titles DPM - deepMesh (.dpm) DTS - Torque Game Engine (.dts) EGG - Panda3D Engine FACT - Electric Image (.fac) FBX - Autodesk FBX (.fbx) G - BRL-CAD geometry (.g) GLM - Ghoul Mesh (.glm) JAS - Cheetah 3D file (.jas) LWO - Lightwave Object (.lwo) LWS - Lightwave Scene (.lws) LXO - Luxology Modo (software) file (.lxo) MA - Autodesk Maya ASCII File (.ma) MAX - Autodesk 3D Studio Max file (.max) MB - Autodesk Maya Binary File (.mb) MD2 - Quake 2 model format (.md2) MD3 - Quake 3 model format (.md3) MDX - Blizzard Entertainment's own model format (.mdx) MESH - New York University(.m) MESH - Meshwork Model (.mesh) MM3D - Misfit Model 3d (.mm3d) MPO - Multi-Picture Object - This JPEG standard is used for 3d images, as with the Nintendo 3DS MRC - voxels in cryo-electron microscopy NIF - Gamebryo NetImmerse File (.nif) OBJ - Wavefront .obj file (.obj) OFF - OFF Object file format (.off) PRC - Adobe PRC (embedded in PDF files) POV - POV-Ray document (.pov) RWX - RenderWare Object (.rwx) SIA - Nevercenter Silo Object (.sia) SIB - Nevercenter Silo Object (.sib) SKP - Google Sketchup file (.skp) SLDASM - SolidWorks Assembly Document (.sldasm) SLDPRT - SolidWorks Part Document (.sldprt) SMD - Valve Studiomdl Data format. (.smd) U3D - Universal 3D file format (.u3d) VRML97 - VRML Virtual reality modeling language (.wrl) VUE - Vue scene file (.vue) WINGS - Wings3D (.wings) X - DirectX 3D Model (.x) X3D - Extensible 3D (.x3d) Z3D - Zmodeler (.z3d)

CAD

 * 3dmlw - (3D Markup Language for Web) files
 * 3dxml - Dassault Systemes graphic representation
 * ACP - VA Software VA - Virtual Architecture CAD file
 * AMF - Additive Manufacturing File Format
 * AR - Ashlar-Vellum Argon - 3D Modeling
 * ART - ArtCAM model
 * ASC - BRL-CAD Geometry File (old ASCII format)
 * ASM - Solidedge Assembly, Pro/ENGINEER Assembly
 * BIN, BIM - Data Design System DDS-CAD
 * CCC - CopyCAD Curves
 * CCM - CopyCAD Model
 * CCS - CopyCAD Session
 * CAD - CadStd
 * CATDrawing - CATIA V5 Drawing document
 * CATPart - CATIA V5 Part document
 * CATProduct - CATIA V5 Assembly document
 * CATProcess - CATIA V5 Manufacturing document
 * cgr - CATIA V5 graphic representation file
 * CO - Ashlar-Vellum Cobalt - parametric drafting and 3D modeling
 * DRW - Caddie Early version of Caddie drawing - Prior to Caddie changing to DWG
 * DWG - AutoCAD and Open Design Alliance applications
 * DFT - Solidedge Draft
 * DGN - MicroStation design file
 * DGK - Delcam Geometry
 * DMT - Delcam Machining Triangles
 * DXF - ASCII Drawing Interchange file format - AutoCAD
 * DWB - VariCAD drawing file
 * DWF - AutoDesk's Web Design Format; AutoCAD & Revit can publish to this format; similar in concept to PDF files; AutoDesk Design Review is the reader
 * EMB - Wilcom ES Designer Embroidery CAD file
 * ESW - Agtek format
 * EXCELLON - Excellon file
 * EXP - Drawing Express file format
 * FM - FeatureCAM Part File
 * FMZ - FormZ Project file
 * G - BRL-CAD Geometry File
 * GERBER - Gerber file
 * GLM - KernelCAD model
 * GRB - T-FLEX CAD File
 * GTC - GRAITEC Advance file format
 * IAM - Autodesk Inventor Assembly file
 * ICD - IronCAD 2D CAD file
 * IDW - Autodesk Inventor Drawing file
 * IFC - buildingSMART for sharing AEC and FM data
 * IGES - Initial Graphics Exchange Specification
 * Intergraph's Intergraph Standard File Formats
 * IPN - Autodesk Inventor Presentation file
 * IPT - Autodesk Inventor Part file
 * JT (visualization format) - Jupiter Tesselation
 * MCD - Monu-CAD (Monument/Headstone Drawing file)
 * model - CATIA V4 part document
 * OCD - Orienteering Computer Aided Design (OCAD) file
 * PAR - Solidedge Part
 * PIPE - PIPE-FLO Professional Piping system design file
 * PLN - ArchiCad project
 * PRT - NX (recently known as Unigraphics), Pro/ENGINEER Part, CADKEY Part
 * PSM - Solidedge Sheet
 * PSMODEL - PowerSHAPE Model
 * PWI - PowerINSPECT File
 * PYT - Pythagoras File
 * SKP - SketchUp Model
 * RLF - ArtCAM Relief
 * RVT - AutoDesk Revit project files
 * RFA - AutoDesk Revit family files
 * SCDOC - SpaceClaim 3D Part/Assembly
 * SLDASM - SolidWorks Assembly drawing
 * SLDDRW - SolidWorks 2D drawing
 * SLDPRT - SolidWorks 3D part model
 * dotXSI - Softimage
 * STEP - Standard for the Exchange of Product model data
 * STL - Stereo Lithographic data format used by various CAD systems and stereo lithographic printing machines.
 * TCT - TurboCAD drawing template
 * TCW - TurboCAD for Windows 2D and 3D drawing
 * UNV - I-DEAS I-DEAS (Integrated Design and Engineering Analysis Software)
 * VC6 - Ashlar-Vellum Graphite - 2D and 3D drafting
 * VLM - Ashlar-Vellum Vellum, Vellum 2D, Vellum Draft, Vellum 3D, DrawingBoard
 * VS - Ashlar-Vellum Vellum Solids
 * WRL - Similar to STL, but includes color. Used by various CAD systems and 3D printing rapid prototyping machines. Also used for VRML models on the web.
 * XE - Ashlar-Vellum Xenon - for Associative 3D Modeling