#_D_EXTENSIONS

.D    DigitalMars D file = text/code.
.D2M  Creative Micro Devices FD2000 emulator image file (Style DirMaster and other applications).
.D3D  Draw3D format file (Draw3D).
.D3D  Ray Dream Studio version 3 object (MetaCreations Ray Dream Studio).
.D3D  Ray Dream Studio version 3 object (MetaCreations Ray Dream Studio).
.D41  Commodore 1541 disk drive image used by Commodore computer emulators.
.D64  Commodore 1541 disk drive image used by Commodore computer emulators.
.D64  Commodore 1541/2031/1551 disk drive format image file (Salmoria & MAME team's Multiple Arcade Machine Emulator).
.D71  Commodore 1571 disk drive image file (MAME, CCS64, VICE, and other computer emulators).
.D71  Commodore 1571 disk drive image used by Commodore computer emulators.
.D80  Commodore 8050 disk drive image used by Commodore computer emulators.
.D81  Commodore 1581 disk drive image used by Commodore computer emulators.
.D81  Commodore 1581/1565 disk drive image file (MAME, CCS64, VICE, and other computer emulators).
.D82  Commodore 8250 dual disk drive image used by Commodore computer emulators.
.DAA  Direct Access Archive file (Power Software's Free Any Burn).
.DAE  Collada file (Timothy M Shead's K-3D 0.8).
.DAE  Digital Asset Exchange/Collada file.
.DAF  Data File (Integra Computing's BillPower).
.DAM  Dammen/draughts game file = single game. Dammen is the Netherlander's name for the game of Draughts (Harm Jetten's DAM).
.DAO  Disc At Once image file (Many image writer/creator applications).
.DAT  DAT or ADAT raw audio file.
.DAT  Data file (Many applications and formats).
.DAT  Dataset file (Many applications, many variants).
.DAT  Disk image file (Helix Software's Nuts & Bolts and other applications, many variants).
.DAT  Playlist file (MusicMatch Jukebox).
.DAT  Video CD/VideoCD/VCD DAT format video (Many applications and devices/appliances).
.DB-JOURNAL Temporary notebook backup Journal file (Cinta Software's CintaNotes).
.DB   CintaNotes Notebook or CintaNotes Notebook backup file (Cinta Software's CintaNotes).
.DB   Paradox format Database file (Many applications).
.DB3-JOURNAL Font service Database Journal file (High-Logic Main Type).
.DB3  Font Database file (High-Logic Main Type).
.DB3  Icon Database file (BauerApps RightNote Icon Manager).
.DBB  DeBabelizer BatchList file (Equilibrium's DeBabelizer 5).
.DBC  Database file (Microsoft Visual FoxPro 6).
.DBF  Database File (FoxPro 2, Visual FoxPro, FoxBASE).
.DBF  dBase format database File (Many applications).
.DBF  dBase II-IV Database File format.
.DBF  dBase V database file. Most applications, including dBase, used DBF files for a multiplicity of purposes, and not merely to store raw database entry data. Calling these files a resource file, configuration file, audio file, etcetera would not be improper if that is what they contained (Ashton Tate's dBase and it's many imitators, fanboys, etcetera, many variants).
.DBI  Database Index file.
.DBI  Database Interface file.
.DBI  DeepBurner backup index file (Astonsoft's DeepBurner 1.9).
.DBL  64-bit Doubles file = RAW audio (Cool Edit Pro).
.DBML Database Markup Language file (Microsoft Visual Studio Tools for Applications 2.0).
.DBO  DarkBasic Object file (Leadwerks 3D World Studio).
.DBP  DeBabelizer SuperPalette file (Equilibrium's DeBabelizer 5).
.DBPAS Auto-save DBPAS file (Andrey M. Zubarev's ZCAD).
.DBPAS DBPAS file (AutoDWG's PDF Converter).
.DBR  DeepBurner CD/DVD authoring project file (Astonsoft's DeepBurner 1.9).
.DBS  DeBabelizer Script file (Equilibrium's DeBabelizer 5).
.DBT  dBase memo Text file (Database applications).
.DC   DesignCAD file (Upperspace's DesignCAD 97/2000/3000).
.DC2  DesignCAD 2D ASCII file (Upperspace's DesignCAD 3D MAX).
.DC3  DesignCAD 3D ASCII file (Upperspace's DesignCAD 3D MAX).
.DCD  DesignCAD Drawing file (Upperspace's DesignCAD 3D MAX).
.DCH  DesignCAD Custom Hatch pattern file (Upperspace's DesignCAD 3D MAX).
.DCL  SGML Declaration file.
.DCS  Duplicatch Session file (Analinx Duplicatch).
.DCT  DesignCAD Custom Toolbox file (IMSI/Design's DesignCAD 3D MAX).
.DCT  Dictionary file (QuarkXPress and many other applications).
.DCX  Multi-image PCX format file (Intel SatisFAXtion, ElectraSoft 32bit Fax 9, and other fax or graphics applications).
.DCX  Multi-page paintbrush format image (ZSoft Publisher and other applications).
.DD   Doodle format image (Commodore 64 Doodle image editor native format).
.DDD  Diagram Designer Diagram file (MeeSoft Diagram Designer).
.DDF  Disk Data File (ACD Systems ACDSee).
.DDF  Disk Data File = thumb data (ACD Systems' ACDSee).
.DDF  Music library file (MusicMatch Jukebox).
.DDS  DDS texture file (Martin Wright's DXTBmp Editor - Many format variations).
.DDS  Direct Draw Surface file (Many graphics applications).
.DDT  Diagram Designer Template palette file (MeeSoft Diagram Designer).
.DEC  Decision file (Business Game Builder).
.DECTEST Decimal Test file (Franz Schmid/Scribus Team Scribus).
.DEF  Delphi source code.
.DEL  Deleted entries file = text removed from another text file.
.DELAYOUT Disketch disk label layout (NCHSoftware Disketch Disk Label).
.DEM  Demo file (C Jain's Mountain 3D).
.DEM  Demo file (Many applications).
.DEM  Digital Elevation Model file = topographical elevation data. (Many applications. Many variations including USGS, GTOPO30, VistaPro, etc.).
.DEN  Deneba file (Deneba).
.DEP  Dependency file (Many applications).
.DEP  Dependency file (Microsoft Office).
.DEPROJ Disketch Disk Label Project file (NCH Software's Disketch Disk Label).
.DES  Designer image file (Corel Designer).
.DEX  Disketch Disk Label file (NCH Software's Disketch Disk Label).
.DFM  Delphi application resource file.
.DFX  Micrografx image effects file (Micrografx Picture Publisher).
.DHD  Creative Micro Devices/CMD Hard Drive emulator image file (Style DirMaster and other applications).
.DHK  Diffie Hellman Key exchange protocol file = 2048 bits (SoftNet Security's SafeIT Encryption v6).
.DHP  Creative Micro Devices/CMD Native Partition emulator image file (Style DirMaster and other Commodore operating system emulator applications).
.DHT  Dynamic HTML/DHTML file (Many browser/server/web development applications).
.DIB  OS/2 Device Independant Bitmap image file (Many applications).
.DIC-SDS Dictionary Smart Diary file (Programming Sunrise's Smart Diary Suite 4).
.DIF  Data Interchange Format file (Many database, worksheet/spreadsheet applications).
.DIF  Device Information File (device driver installers for SiS, Cmedia, and other vendor hardware).
.DIF  Difference file for comparisons, merging (Many applications).
.DIF  DV movie (QuickTime 7.7.2).
.DIF  Torque map file (Leadwerks 3D World Studio).
.DIG  Digital audio file (SoundDesigner and other applications).
.DISCO Web service Discovery file (Microsoft VisualStudio).
.DISPOSITION Disposition file (jOrgan).
.DIY  Do It Yourself file = Text instructions that accompany device driver software installation packages that provide information for manual device driver installation (Samsung and other hardware manufacturers).
.DIZ  Description In ZIP file = A short description of a ZIP archive's contents stored within the ZIP file itself. The file facilitates automated archive content description building facilities that exist in unattended file managing/sharing systems such as FTPs, electronic bulletin boards, etcetera. The extracted ZIP file descriptions are exposed to those using the system if they wish to view archive descriptions of archives available for download. The use of DIZ files now extends to any archive file the automated/unattended systems support (Many applications).
.DJV  AT&T DjVu encoded file (Many document viewers, fewer editors).
.DJV  DJVU format document (WinDJView and other applications).
.DJVU AT&T DjVu encoded file (Many document viewers, fewer editors).
.DJVU DJVU format document (WinDJView and other applications).
.DKF  DesignCAD binary Keyboard File (Upperspace's DesignCAD 3D MAX).
.DLL  Dynamic Link Library file = application resource library (Microsoft Windows and many Windows applications).
.DLL  Faces file (nFX Cartoon-O-Matic).
.DLX  DLX file (HollywoodFX).
.DMA  DMOD format audio file (UltraCo UltraPlayer 1).
.DMDF DMD Font file (Future Pinball).
.DMF  DeleD Map File (Delgine Team DeleD 3D Editor).
.DMF  DesignCAD binary Menu File (Upperspace's DesignCAD 3D MAX).
.DMG  Macintosh image file (Power Software's Free Any Burn).
.DMI  Default Messages file (David Harris' Pegasus Mail).
.DMP  Download Management Protocol (Go!Zilla 3.x download manager).
.DMS  DiskMasher disk image format file (DiskMasher).
.DMU  DMOD format URL file (UltraCo UltraPlayer 1).
.DNA  DNA file = function values (MediaChance Real-DRAW).
.DNC  IGESToolbox file (IGESToolbox).
.DNG  Digital Negative file (Many applications and now cameras and other hardware).
.DOC  Draughts DOC-format game(s) file (Turbo DamBase, Truus, and other draughts games).
.DOC  Microsoft Word document (Microsoft Word and many Office applications).
.DOC  Microsoft Word Mail Merge document (Microsoft Word and many Office applications).
.DOC  Text documentation (Many applications).
.DOC  Word Document file (Corel Word Perfect Office X6).
.DOCM Microsoft Word Macro-enabled Document file (Microsoft Word).
.DOCX Word DOCX Document file (Word Perfect Office X6).
.DOF  Delphi file.
.DOS  Disk Operating System/DOS configuration file = text (Many DOS applications).
.DOT  Document Template file = Microsoft Word format (Microsoft Word and many other Office applications).
.DOX  Multi-Mate format document file (Many word processors/Office applications).
.DPA  DVD Project file (MGI VideoWAV 3).
.DPF  DeleD Prefab File (Delgine Team DeleD 3D Editor).
.DPL  Data Display file (Michael Margraf's QUCS/Quite Universal Circuit Simulator).
.DPP  DrawPlus drawing Project file (Serif's DrawPlus).
.DPR  Delphi Project file (Microsoft Developer Studio 6).
.DPR  Delphi Project file.
.DPS  Presentation file (Kingsoft Office Presentation).
.DPT  Presentation Template file (Kingsoft Office Presentation).
.DQY  Database Query file (Microsoft Excel).
.DRG  Card database file (Avancesoft RGS-Cardmaster).
.DRP  Redrum drum machine device patch file (Propellerhead's Reason).
.DRV  Driver files for hardware devices (Microsoft Windows).
.DRW  Micrografx Drawing 3 format image file (Micrografx Designer, Micrografx Draw 3).
.DS   DrumSynth instrument file (DrumSynth).
.DS4  Micrografx Designer v4 image file (Micrografx Designer 4).
.DS7  Saved game file (Nihon Falcom's Lord Monarch - Online version).
.DSF  Designer format image File (Micrografx Designer 5).
.DSF  DVD Slim Free cover design project file (Elefant Software's DVD Slim Free).
.DSK  Disk dump file (MAME and MESS).
.DSN  Design file (Matt Pyne's TinyCAD).
.DSP  Developer Studio Project file (Microsoft Developer Studio 6).
.DSP  Digital Signal Processor plug-in file (Audio players).
.DSPP Digital Signal Processor Plug-in file (Audio players).
.DSQ  Device Standard Quality parameter presets file (MGI VideoWave 1.5).
.DSW  Developer Studio Workspace file (Microsoft Developer Studio 6).
.DTD  Document Type Definition files which describe or define the content of the file itself and/or other files (Many applications, many formats/variations).
.DV   Digital Video format video file (Many video applications, Sony video cameras, and other devices).
.DVA  DVDAuthor project file (DVDAuthor GUI).
.DVAM DVDAuthor Menu file (DVDAuthor GUI).
.DVD  DVD Project file (Andrej Rakar's Simple DVD Creator).
.DVDFAB5 DVDFab5 file (Fengtao Software's DVDFab).
.DVDFAB6 DVDFab6 file (Fengtao Software's DVDFab).
.DVDFABBLURAY2BLURAY DVDFab BluRay To BluRay project file (Fengtao Software's DVDFab).
.DVDFABBLURAY2DVD DVDFab BluRay To DVD project file (Fengtao Software's DVDFab).
.DVDFABBLURAY2MOBILE DVDFab BluRay To Mobile device project file (Fengtao Software's DVDFab).
.DVDFABBLURAY2MOBILE3D DVDFab BluRay To Mobile device project file (Fengtao Software's DVDFab).
.DVDFABBLURAYDECRYPT DVDFab BluRay Decryption project file (Fengtao Software's DVDFab).
.DVDFABDVD2DVD DVDFab DVD To DVD project file (Fengtao Software's DVDFab).
.DVDFABDVD2MOBILE DVDFab DVD To Mobile device project file (Fengtao Software's DVDFab).
.DVDFABDVDDECRYPT DVDFab DVD Decryption project file (Fengtao Software's DVDFab).
.DVDFABFILE2BLURAY DVDFab File To BluRay file (Fengtao Software's DVDFab).
.DVDFABFILE2DVD DVDFab File To DVD file (Fengtao Software's DVDFab).
.DVDFABFILE2MOBILE DVDFab File To Mobile device file (Fengtao Software's DVDFab).
.DVDFABFILEMOVER DVDFab File Mover project file (Fengtao Software's DVDFab).
.DVDFABMOBILE2DTO3D DVDFab 2D To 3D Conversion project file (Fengtao Software's DVDFab).
.DVDS DVD Styler project file = XML markup (DVD Styler v2.3 rc3).
.DW3  Draw3D file (Draw3D 1, Click3D 1).
.DW3  DreamWeaver 3 file (Macromedia Dreamweaver 3).
.DWD  DiamondWare Digitized audio/sample file.
.DWF  Design Web Format file (Autodesk DWF Viewer).
.DWFX Design Web Format XML file (IGC Free DWG Viewer and other applications).
.DWG  AutoCAD Drawing file = proprietary, native AutoCAD drawing format (Autodesk's AutoCAD).
.DWK  AutoCAD Drawing Locked file (Autodesk AutoCAD Release13).
.DWL  Locked DWG Drawing file (Autodesk AutoCAD Release13, AudoDWG's DWGSee).
.DWP  DarkWave Project file (ExperimentalScene's DarkWave Studio).
.DWS  DesignCAD Workspace file (Upperspace's DesignCAD 3D MAX).
.DWT  Dreamweaver Template file (Dreamweaver).
.DXF  Drawing Interchange Format image file = 2D and 3D drawing entities and their attributes (AutoCAD and other 3D/CAD/graphics applications).
.DXF  QCad 1.x file (LibreCAD).
.DXP  CDBurnerXP project file (Canneverbe CDBurnerXP).
.DXP  Dexpot saved application profile (Dexpot).
.DXS  DeleD XML Scene file (Delgine Team DeleD 3D Editor).
.DXX  DXF format Extract file (CorelCAD).