| .dgk |
Delcam 3D Model File |
| .dcover |
Disc Cover File |
| .dmc |
Datamartist Data Canvas File |
| .dwlibrary |
Paperless Document Library |
| .dv-avi |
Microsoft DV-AVI Video File |
| .dlu |
3ds Max Utility Plug-in File |
| .dws |
Dyalog Workspace File |
| .dxx |
AutoCAD Drawing Interchange Attribute File |
| .dcpr |
Adobe DNG Camera Profile Recipe File |
| .dcst |
Adobe InDesign Document Presets File |
| .dzt |
DirectorZone Title File |
| .diagcab |
Troubleshooting Pack Cabinet File |
| .dc2 |
DesignCAD 2D ASCII Drawing |
| .dmo |
Cube 2: Sauerbraten Demo File |
| .dv2 |
Divinity 2 Data File |
| .dia |
Do It Again Task File |
| .der |
DER Certificate File |
| .dbs |
SQLBase Database File |
| .dsgm |
DS Game Maker Project |
| .dl_ |
Compressed DLL File |
| .dtapart |
DownThemAll! Partially Downloaded File |
| .dit |
Active Directory Information Tree File |
| .drf |
VIZ Render File |
| .dnf |
Duke Nukem Forever Map File |