| .d64 |
Commodore 64 Disk Image |
| .dewf |
SoundEdit Recorded Instrument |
| .df2 |
Defractor 2 Instrument |
| .dfc |
Defractor Instrument |
| .dig |
Digilink Audio File |
| .dls |
Downloadable Sounds File |
| .dmf |
Geosystem Digitals Map File |
| .dsm |
Digital Sound Module |
| .dtm |
DigiTrakker Module |
| .dar |
DAR Disk Archive |
| .dgc |
DGCA File Archive |
| .dob |
Visual Basic UserDocument |
| .dox |
Visual Basic Binary UserDocument |
| .dc4 |
ViaThinkSoft (De)Coder 4 File |
| .df1 |
Omnis Native Datafile |
| .dp1 |
DataPower Database File |
| .dpd |
Ovation Pro File |
| .des |
Pro/DESKTOP CAD File |
| .d2v |
DVD2AVI File |
| .dec |
Declaration File |
| .dhtml |
Dynamic HTML file |
| .dpg |
Nintendo DS Movie File |
| .dgb |
FlashCAD Drawing Database |
| .drm |
Deus Ex Data File |