3D & CAD
97 extensions
.dwg
AutoCAD Drawing Database File
.aat
AutoCAD Drawing
.obj
Wavefront OBJ File
.stl
Stereolithography File
.3dsx
3DS Max Scene
.3mf
3D Manufacturing Format
.acad
AutoCAD Drawing File
.adsk
Autodesk Drawing
.3ds
3D Studio
.3dx
3D-Studio File
.555
Autodesk 3ds Max Scene
.aec
Autodesk Exchange File
.ahd
AutoCAD Drawing
.aid
AutoCAD Drawing
.123d
Autodesk 123D Design File
.13t
ThreeD Graphics Data
.221
Pro/ENGINEER/Creo Parametric Part File
.3
3D Objects (e.g., using .3DS)
.3d
3D Graphics File
.3d4
Rhino 3D Scene
.3da
3D Studio AutoDesk File
.3db
3D Database File
.3de
Autodesk 3D Design File
.3dl
3D Layer File
.3dm
3D Manufacturing Format
.3dmk
Rhinoceros 3D Model (Marked)
.3don
3D Object Node
.3dp
3D Document
.3dt
3D Text File
.3dxml
3D XML
.3fx
3DEXPERIENCE Format
.4dr
AutoCAD Drawing File
.5xe
Autodesk 3ds Max Scene Element
.aba
Autodesk Bach File
.adh
Autodesk Drawing
.adpp
Adobe Dimension Project
.adt
Autodesk CAD Drawing
.afg
Autodesk FBX Geometry Cache
.afw
AutoCAD Drawing
.122
Autodesk 3D Studio 3D World (3D Studio DOS)
.123dx
123D Design Project
.340
Generic 3D Model File
.386
TrueVision3D 3D Model
.3b
3B 3D Model
.3d0
3D Object File
.3dc
3D Capture File
.3dd
3D Document
.3df
3D File Format
.3dfbat
3D-FA-BAT
.3dg
3D Game Studio Model
.3di
3D Image File
.3dk
3DKit File
.3dmbak
3D Model Backup File
.3dmdef
3DDef Engine Definition File
.3dmf
3D Metafile
.3dmlw
3DML (3D Markup Language) - Lightweight Version
.3doku
3Doku File
.3dr
3D Radiosity Object
.3dv
3D Viewer File
.3dw
3D Warehouse File
.3dxmj
3DXML
.3dz
3DZephyr File
.3gm
3D Game Model
.3me
3D Metafile Exchange
.3mm
3D Manufacturing Format
.3pr
3D Printer File
.3tf
3D Text File
.3th
3D Telescope File
.3ws
3D Wavefront Studio Scene
.4ds
3D Studio Scene File
.4dv
3D Viewer Document
.4dx
Autodesk Design Exchange
.4ug
Autodesk 3D Studio 4 Universal Graphics
.5d
5D (potentially proprietary 3D model format)
.5vw
5D View Window
.73i
Rend3D (formally RISC 3D) File
.73p
3D Model File
.9m1
3D Model (likely proprietary)
.a03
Amiga 3D Object File
.a14
Autodesk Alias 14 Model File
.a2w
Autodesk 2D/3D World File
.a31
AC3D Model File
.a3d
Anim8 3D Animation File
.a3l
AC3D Model File
.a3s
3D Scene ASCII
.a3x
A3X Format
.a6l
Alibre Design Accessory Library
.aa3
ArchLabs Linux 3D Model
.ac3d
AC3D Model File
.ad3e
Autodesk 3D Design File
.ad_asm
AutoCAD Drawing Assembly
.adba
Autodesk Data Exchange File
.adn
Adobe Node Graph
.ados
ADAM/3D Object Scene
.adsm
Autodesk Design Model
.agm
Acrobat 3D PDF
.ahod
Artisan House Object Data