| File Extension: | STP |
| File Type Description: | STEP 3D CAD File |
| File Type Developer: | Unknown Developer |
| Primary Associated Software: | CATIA |
| Primary Software Developer: | Dassault Systèmes |
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DARTECH developed the STEP 3D CAD File file type when the DART was initially released. Internal website statistics show that STP files are most popular with users in United States and those running the Windows 10 operating system. Generally, we have found that most of these people are Google Chrome users.
 | STP Viewer by ideaMK |
 | IDA-STEP by LKSoft |
 | CATIA by Dassault Systèmes |
 | Adobe RoboHelp by Adobe Systems Incorporated |
 | DART by DARTECH |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Unix |
 | Mac |
 | iOS |
 | Android |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .EPRT | Dassault Systèmes | CAD Files | eDrawings File |
| .INP | Concept Software | Page Layout Files | Urdu InPage Document |
| .STEP | Unknown Developer | 3D Image Files | STEP 3D Model |
| .PRTDOT | Dassault Systèmes | CAD Files | SolidWorks Part Template |
| .CATPART | Dassault Systèmes | CAD Files | CATIA V5 Part File |
| .SAB | Spatial Corp | CAD Files | ACIS SAB Model File |
| .C18 | Dassault Systèmes | CAD Files | Dassault Systemes Catia V4 Sequential File |
| .NMO | Dassault Systèmes | Data Files | 3DVIA Virtools Behavioral Object File |
| .DXF | Autodesk, Inc. | CAD Files | Drawing Exchange Format |
| .SLDLFP | Dassault Systèmes | Graphic Files | SolidWorks Library Part |
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