.SAT | Spatial Corp | CAD Files | ACIS SAT 3D Model File | Autodesk Fusion 360 | Autodesk, Inc. |
.SBP | Autodesk, Inc. | Raster Image Files | Sketchbook Express iCloud Image | SketchBook | Autodesk, Inc. |
.SCH | Autodesk, Inc. | Data Files | EAGLE Schematics File | Autodesk EAGLE | Autodesk, Inc. |
.SDC | Stardock Corporation | Backup Files | Stardock Central Download Archive | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.SDF | Microsoft Corporation | Database Files | SQL Server Compact Database File | AutoCAD Map 3D | Autodesk, Inc. |
.SDK | Autodesk, Inc. | CAD Files | AutoSketch Drawing | AutoSketch | Autodesk, Inc. |
.SDL | Microsoft Corporation | Developer Files | Service Description Language File | Infrastructure Map Server | Autodesk, Inc. |
.SET | Xerox | Settings Files | Document Library Property Set File | Autodesk AutoCAD Ecscad | Autodesk, Inc. |
.SHP | Autodesk, Inc. | 3D Image Files | AutoCAD Shape File | Autodesk AutoCAD Ecscad | Autodesk, Inc. |
.SHX | Autodesk, Inc. | CAD Files | AutoCAD Compiled Shape File | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.SI | Autodesk, Inc. | 3D Image Files | Softimage Image File | Autodesk Softimage 2015 | Autodesk, Inc. |
.SKF | Autodesk, Inc. | CAD Files | AutoSketch Drawing | AutoSketch | Autodesk, Inc. |
.SKL | Autodesk, Inc. | 3D Image Files | Maya Skeleton File | Autodesk Maya | Autodesk, Inc. |
.SLB | Autodesk, Inc. | Uncommon Files | AutoCAD Slide Library | Autodesk AutoCAD | Autodesk, Inc. |
.SLD | ESRI (Environmental Systems Research Institute) | GIS Files | Styled Layer Descriptor | Autodesk AutoCAD | Autodesk, Inc. |
.SLDASM | Dassault Systèmes | CAD Files | SolidWorks Assembly File | Autodesk Fusion 360 | Autodesk, Inc. |
.SLDPRT | Dassault Systèmes | CAD Files | SolidWorks CAD Part File | Autodesk Fusion 360 | Autodesk, Inc. |
.SLG | Dionex Corporation | Data Files | Chromeleon Audit Trail Data | Autodesk AutoCAD | Autodesk, Inc. |
.SLP | Magix Software GmbH | Audio Files | SpectraLayers Pro Project | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.SMB | Autodesk, Inc. | Data Files | Autodesk Symbol Library | Autodesk AutoCAD Ecscad | Autodesk, Inc. |
.SQLITE | Dwayne Richard Hipp | Database Files | SQLite Database File | AutoCAD Map 3D | Autodesk, Inc. |
.SSC | Microsoft Corporation | Developer Files | SourceSafe Status File | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.STB | Autodesk, Inc. | Settings Files | AutoCAD Plot Style Table File | Autodesk AutoCAD | Autodesk, Inc. |
.STEP | Unknown Developer | 3D Image Files | STEP 3D Model | Autodesk Fusion 360 | Autodesk, Inc. |
.STP | Unknown Developer | 3D Image Files | STEP 3D CAD File | Autodesk Fusion 360 | Autodesk, Inc. |
.STYXML | Autodesk, Inc. | CAD Files | Inventor Style Library File | Autodesk Inventor | Autodesk, Inc. |
.SV$ | Autodesk, Inc. | Backup Files | AutoCAD Automated Backup File | Autodesk AutoCAD | Autodesk, Inc. |
.TBL | Blizzard Entertainment Inc. | Data Files | StarCraft Information Table | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.TBP | Trimble Inc. | CAD Files | Tekla BIMsight Project | Autodesk Topobase | Autodesk, Inc. |
.TDF | DVD Copy | Settings Files | Title Definition Format File | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.TF | Borland | Settings Files | Turbo Profiler Configuration | Autodesk Inventor | Autodesk, Inc. |
.TSK | Microsoft Corporation | Settings Files | Pocket PC Skin | Autodesk EAGLE | Autodesk, Inc. |
.UG | Autodesk, Inc. | Vector Image Files | Drawing File | AutoCAD for Mac | Autodesk, Inc. |
.UNT | Autodesk, Inc. | Data Files | AutoCAD Unit Definition Data File | Autodesk AutoCAD | Autodesk, Inc. |
.USR | FileMaker Inc. | Database Files | FileMaker Pro Database File | CadSoft EAGLE | Autodesk, Inc. |
.UVW | Autodesk, Inc. | Data Files | UVW Coordinates File | Autodesk 3ds Max | Autodesk, Inc. |
.VLX | Autodesk, Inc. | Executable Files | Compiled AutoLISP File | Autodesk AutoCAD Ecscad | Autodesk, Inc. |
.VRT | Superscape | Web Files | Virtual World | Autodesk AutoCAD | Autodesk, Inc. |
.VUE | E-on Software, Inc. | 3D Image Files | Vue Scene File | Autodesk 3ds Max | Autodesk, Inc. |
.WAC | Wacom | Data Files | Inkling Sketch XML File | SketchBook | Autodesk, Inc. |
.WDP | Microsoft Corporation | Raster Image Files | Windows Media Photo File | Autocad Electrical | Autodesk, Inc. |
.WEA | Autodesk, Inc. | Data Files | Ecotect Weather File | Ecotect Analysis | Autodesk, Inc. |
.WPI | Wacom | Vector Image Files | Inkling Sketch Binary File | SketchBook | Autodesk, Inc. |
.XLG | Autodesk, Inc. | Data Files | AutoCAD External Reference Log | Autodesk AutoCAD | Autodesk, Inc. |
.XLO | Autodesk, Inc. | CAD Files | Autodesk Inventor Export Journal Data | Autodesk Inventor | Autodesk, Inc. |
.XMS | Alexander Gross | Settings Files | Music Studio Project | Autodesk AutoCAD | Autodesk, Inc. |
.XMX | Autodesk, Inc. | Data Files | AutoCAD External Message Compiled Data | Autodesk AutoCAD | Autodesk, Inc. |
.XSI | Autodesk, Inc. | 3D Image Files | Softimage XSI 3D Image | Autodesk Softimage 2015 | Autodesk, Inc. |
.XSP | Open Source | Audio Files | Kodi Smart Playlist File | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.XTP | adnx | Data Files | xTime Project Document | Autodesk AutoCAD Civil 3D | Autodesk, Inc. |
.X_T | Siemens PLM Software | CAD Files | Parasolid Model Part File | Autodesk Fusion 360 | Autodesk, Inc. |