| Extension |
File Type |
File Description |
| .d | Developer | D Source Code File |
| .d00 | Audio | OPL2 FM Audio File |
| .d01 | Audio | OPL2 FM Audio File |
| .d2v | Video | DVD2AVI File |
| .d3v | Video | Datel Video File |
| .d64 | Disk | Commodore 64 Disk Image |
| .d88 | Disk | Toshiba Pasopia 7 Disk File |
| .da0 | Backup | Windows Registry Backup |
| .daa | Disk | PowerISO Direct-Access-Archive |
| .dae | 3D Image | Digital Asset Exchange File |
| .daf | Data | Digital Anchor File |
| .dam | Data | DeltaMaster Analysis Model |
| .dao | Disk | Disk at Once CD/DVD Image |
| .dap | Web | Access Data Access Page |
| .dar | Compressed | DAR Disk Archive |
| .das | Data | DeltaMaster Analysis Session |
| .dat | Data | Data File |
| .dat | Misc | Winmail.dat E-mail Attachment |
| .dat | Video | VCD Video File |
| .db | Data | Database File |
| .db | Misc | Thumbs.db Windows Thumbnail Cache |
| .db2 | Data | dBASE II Database |
| .dbb | Settings | Skype User Information File |
| .dbc | Data | FoxPro Database |
| .dbf | Data | Database File |
| .dbf | Data | FoxPro Table |
| .dbg | Settings | FoxPro Debugger Configuration |
| .dbk | Backup | dBASE Database Backup |
| .dbm | Web | ColdFusion Server File |
| .dbt | Text | Database Text File |
| .dbv | Misc | Database Variable Field |
| .dbx | Misc | Outlook Express E-mail Folder |
| .dbx | Data | Visual FoxPro Table |
| .dc1 | Misc | Bloomba E-mail Message |
| .dc4 | Encoded | ViaThinkSoft (De)Coder 4 File |
| .dce | Video | DriveCam Video |
| .dcf | Audio | DRM Content Format File |
| .dcf | Disk | Disk Copy Fast Disk Image File |
| .dcl | Data | DumpSec Report File |
| .dcm | Image | DICOM Image File |
| .dcm | Audio | DCM Audio Module |
| .dcp | Developer | Delphi Compiled Package |
| .dcr | Raster Image | Kodak RAW Image File |
| .dcs | Vector Image | Desktop Color Separation File |
| .dct | Text | FoxPro Database Memo |
| .dct | Misc | Dictionary File |
| .dct | Audio | Dictation Audio File |
| .dctmp | Misc | DC++ Partially Downloaded File |
| .dcu | Developer | Delphi Compiled Unit |
| .dcx | Misc | FoxPro Database Index |
| .dcx | Page Layout | FAXserve Fax Document |
| .dd | Compressed | DiskDouber Archive |
| .ddb | Image | Device Dependent Bitmap |
| .ddc | Data | DivX Descriptor File |
| .ddcx | Data | DivX Descriptor 2 File |
| .ddrw | Image | ClarisDraw Drawing |
| .dds | Image | DirectDraw Surface |
| .deb | Compressed | Debian Software Package |
| .dec | Developer | Declaration File |
| .def | Developer | Module-Definition File |
| .def | Developer | SmartWare II Data File |
| .dek | Misc | Memorize-It Flashcard Deck |
| .dek | Executable | Eavesdropper Batch File |
| .dem | Game | Video Game Demo |
| .dem | Data | Digital Elevation Model |
| .des | 3D Image | Pro/DESKTOP CAD File |
| .des | 3D Image | Corel Designer File |
| .des | Data | QuickBooks Forms Template |
| .desklink | System | Desktop Shortcut |
| .desktop | Misc | Desktop Entry File |
| .dev | System | Windows Device Driver File |
| .dev | Developer | Dev-C++ Project File |
| .dewf | Audio | SoundEdit Recorded Instrument |
| .dex | Data | DEXIS Digital X-ray File |
| .dex | Data | Excel Spreadsheet |
| .df1 | Developer | Omnis Native Datafile |
| .df2 | Audio | Defractor 2 Instrument |
| .dfc | Audio | Defractor Instrument |
| .dfm | Developer | Delphi Form |
| .dfont | Font | Mac OS X Data Fork Font |
| .dfp | Plugin | Fusion Plugin File |
| .dft | Data | Solid Edge Draft Document |
| .dgb | Data | FlashCAD Drawing Database |
| .dgc | Misc | TurboTax Tax Form |
| .dgc | Compressed | DGCA File Archive |
| .dgn | Vector Image | MicroStation Drawing File |
| .dgs | Text | Dagesh Pro Document |
| .dhtml | Web | Dynamic HTML file |
| .dib | Raster Image | Device Independent Bitmap File |
| .dic | Misc | Dictionary File |
| .dif | Data | Data Interchange Format |
| .dif | Video | Digital Interface Format |
| .dig | Audio | Digilink Audio File |
| .dig | Audio | Sound Designer Audio File |
| .dii | Data | Summation Batch Load File |
| .dim | Encoded | Direct Internet Message Encapsulation (DIME) |
| .dime | Encoded | Direct Internet Message Encapsulation (DIME) |
| .dir | Video | Adobe Director Movie |
| .disco | Web | DISCO Discovery Document |
| .discomap | Web | DISCO Discovery Output File |
| .diskdefines | Misc | Linux LiveCD Information File |
| .dist | Compressed | Mac OS X Distribution Script |
| .divx | Video | DivX-Encoded Movie File |
| .diz | Text | Description in Zip File |
| .djvu | Raster Image | DjVu Image |
| .dlg | Data | Digital Line Graph |
| .dll | Data | Dynamic Link Library |
| .dll | Web | DLL Dynamic Web Page |
| .dlo | Plugin | 3ds Max Plug-in |
| .dls | Audio | Downloadable Sounds File |
| .dm | Audio | DRM Delivery Message |
| .dm2 | Data | Toad Data Modeler 2 File |
| .dm2 | Game | Quake 2 Demo File |
| .dmb | Video | Digital Multimedia Broadcasting File |
| .dmf | Audio | Delusion Digital Music File |
| .dmg | Disk | Mac OS X Disk Image |
| .dmo | Data | Derive Demo |
| .dmp | System | Windows Memory Dump |
| .dms | Disk | Disk Masher Image |
| .dms | Game | Dream Maker Script |
| .dm_84 | Game | Wolfenstein Demo Movie File |
| .dne | Text | Netica Text File |
| .dng | Image | Digital Negative Image File |
| .do | Web | Java Servlet |
| .dob | Developer | Visual Basic UserDocument |
| .doc | Text | Microsoft Word Document |
| .doc | Text | WordPad Document |
| .docm | Text | Word 2007 Macro-Enabled Document |
| .docx | Text | Microsoft Word Open XML Document |
| .dol | Game | Gamecube Executable File |
| .dot | Text | Microsoft Word Template |
| .dotm | Text | Word 2007 Macro-Enabled Document Template |
| .dotx | Text | Word 2007 Document Template |
| .dov | Backup | Temp File |
| .download | Web | Partially Downloaded File |
| .downloadhost | Settings | MSN Download Settings File |
| .dox | Developer | Visual Basic Binary UserDocument |
| .dp1 | Data | DataPower Database File |
| .dpb | Misc | FaxMaster Document |
| .dpd | Page Layout | Ovation Pro File |
| .dpg | Video | Nintendo DS Movie File |
| .dpk | Developer | Delphi Package |
| .dpl | Developer | Delphi Package Library |
| .dpp | Vector Image | DrawPlus Drawing File |
| .dpr | Developer | Delphi Project |
| .dpr | Vector Image | Digital InterPlot File |
| .dpx | Raster Image | Digital Picture Exchange File |
| .dqy | Misc | Excel Query File |
| .dr | Misc | DRM Rights Object |
| .drc | Misc | DRM Rights Object |
| .drm | Settings | Cubase Drum Map File |
| .drv | System | Device Driver |
| .drw | Vector Image | Drawing File |
| .drw | Vector Image | DESIGNER Drawing |
| .ds | Executable | TWAIN Data Source |
| .dsc | Misc | CoolPix Disk Identification File |
| .dsf | Audio | Delusion Digital Sound File |
| .dsk | Disk | Disk Image |
| .dsk | Developer | Borland Project Desktop File |
| .dsk | Data | Simple IDs Database |
| .dsm | Audio | Digital Sound Module |
| .dsp | Developer | Developer Studio Project |
| .dsp | Audio | Dynamic Studio Professional Module |
| .dss | Audio | Digital Speech Standard File |
| .dss | System | DCC Active Designer File |
| .dst | Misc | Embroidery Format |
| .dsw | Settings | Visual C++ Workspace File |
| .ds_store | Settings | Mac OS X Folder Settings File |
| .dtd | Developer | Document Type Definition |
| .dtm | Audio | DigiTrakker Module |
| .dtp | Page Layout | Publish-iT Document |
| .dt_ | Misc | Macintosh Data Fork |
| .dus | Misc | Readiris Font Dictionary |
| .dv | Video | Digital Video File |
| .dvd | System | DOS Device Driver |
| .dvd | Disk | CloneCD DVD Information File |
| .dvf | Audio | Sony Digital Voice File |
| .dvi | Text | Device Independent Format File |
| .dvl | Raster Image | Virtual Library File |
| .dvr-ms | Video | Microsoft Digital Video Recording |
| .dvx | Video | DivX Video File |
| .dwc | Misc | Emulex DWC Firmware Update File |
| .DWD | Audio | DiamondWare Digital Audio File |
| .dwg | Vector Image | AutoCAD Drawing Database |
| .dwn | Misc | Firmware Update File |
| .dwt | Web | Dreamweaver Web Page Template |
| .dx | Text | DEC WPS Plus File |
| .dxb | Vector Image | Drawing Exchange Binary |
| .dxf | Vector Image | Drawing Exchange Format File |
| .dxr | Video | Protected Macromedia Director Movie |
| .dxs | Game | Deus Ex Saved Game |
| .dylib | Developer | Dynamic Library |
