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| Extension | File Type Developer | File Category | File Type Description | Software | Software Developer |
|---|---|---|---|---|---|
| .3DREP | Dassault Systèmes | Data Files | CATIA 3D Geometry Data | CATIA | Dassault Systèmes |
| .CATALOG | Dassault Systèmes | CAD Files | CATIA Catalog File | CATIA | Dassault Systèmes |
| .CATFCT | Dassault Systèmes | CAD Files | CATIA CATfct Data File | CATIA | Dassault Systèmes |
| .CATMATERIAL | Dassault Systèmes | CAD Files | CATIA CATMaterial Data | CATIA | Dassault Systèmes |
| .CATPART | Dassault Systèmes | CAD Files | CATIA V5 Part File | CATIA | Dassault Systèmes |
| .CGR | Dassault Systèmes | CAD Files | CATIA Graphical Representation File | CATIA | Dassault Systèmes |
| .DLV | Dassault Systèmes | CAD Files | CATIA 4 Export File | CATIA | Dassault Systèmes |
| .EXP | Unknown Developer | Developer Files | Symbols Export File | CATIA | Dassault Systèmes |
| .EXPORT | Dassault Systèmes | CAD Files | CATIA Export Data | CATIA | Dassault Systèmes |
| .HSF | Tech Soft 3D | CAD Files | HOOPS Stream Format File | CATIA | Dassault Systèmes |
| .IGS | United States Air Force | CAD Files | Initial Graphics Exchange Specification Drawing File | CATIA | Dassault Systèmes |
| .MOD | Open Source | Audio Files | Amiga Music Module File | CATIA | Dassault Systèmes |
| .STP | Unknown Developer | 3D Image Files | STEP 3D CAD File | CATIA | Dassault Systèmes |
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