DAO
Windows Registry Backup
DAT
Data file
DAT
WordPerfect Merge Data
DAT
Extension used for some MPEG files
DB
Borderland's Paradox 7 table database
DBC
Microsoft's Visual FoxPro database container file
DBF
A dBASE file, a format originated by Ashton-Tate, but understood by Act!, Clipper,FoxPro, Arago, Wordtech, xBase, and similar
database or database-related products.
DBF
Enable database (can be opened with Excel 97)
DBF
Oracle 8.1.x tablespace file
DBK
dBase Database Backup
DBQ
Paradox Memo
DBT
dBase Text Memo
DBW
Microsoft Windows 9.x Database file (DataBoss)
DBX
DataBeam image
DBX
Microsoft's Visual Foxpro Table file
DCA
Document Content Architecture Text file (IBM DisplayWrite)
DCA
Visual Basic Active designer cache
DCF
Disk Image file
DCIM
Digital Imaging and Communications in Medicine (image and data)
DCM
DCM module
DCP
Data CodePage (OS/2)
DCR
Shockwave file
DCS
Desktop Color Separation file
DCS
Bitmap Graphics (Quark XPress)
DCS
Datafile (ACT! Activity file)
DCT
Microsoft's Visual FoxPro database container file
DCT
Database Dictionary file (Clarion Database Developer)
DCT
Database SpellCheck Dictionary (Harvard Graphics 3.0-Symphony)
DCU
Delphi compiled unit
DCX
Microsoft's Visual FoxPro database container file
DCX
Fax image (based on PCX)
DCX
Macro file
DCX
Bitmap Graphics file (Multipage PCX)
DC5
DataCAD Drawing
DD
Compressed Archive (Macintosh DISKDOUBLER)
DDB
Bitmap Graphics file
DDF
Btrieve or Xtrieve Data Definition File, which contains metadata describing a Btrieve or Xtrieve file
DDI
Image File (DISKDUPE)
DDIF
Digital Equipment or Compaq file. Used for storing images and their word processing documents
DDP
Device Driver Profile (OS/2)
DEB
Debug Script (DOS Debug)
DEF
SmartWare II data
DEF
C++ definition file
DEF
Assembly Header file (Geoworks)
DEFI
Oracle 7 de-install script
DEM
Graphics file (VistaPro)
DEM
A file with USGS standards for Digital Elevation Models
DEP
Visual Basic Setup Wizard Dependency file
DER
Certificate file
DEV
Device Driver
DEWF
Macintosh SoundCap/SoundEdit recorded instrument file
DFD
Data Flow Diagram Graphic (Prosa)
DFI
Outline Font description (Digifont)
DFL
Default Program Settings (Signature)
DFM
Data Flow Diagram model (Prosa)
DFS
Sound File (Delight)
DFV
Printing Form value (Microsoft Word)
DGN
Microstation95 CAD drawing
DGS
Diagnostics Report
DH
Dependency Information file (Geoworks)
DHP
Graphic file (Dr. Halo II-III PIC Format)
DHT
Datafile (Gauss)
DIA
Diagraph Graphics file (Computer Support Corporation)
DIB
Device-independent bitmap
DIC
Dictionary file
DIC
Dictionary file (Lotus Notes, Domino)
DIF
Data Interchange Format spreadsheet
DIF
Database file (VisiCalc)
DIF
Data Interchange Output file
DIF
Text file (Output from Data Interchange Format)
DIG
Digilink file
DIG
Sound Designer I audio
DIP
Graphics file
DIR
Macromedia Director file
DIR
Dialing Directory (ProComm Plus)
DIR
Directory (VAX) (DEC)
DIR
Movie (MacroMind Director 4.x)
DIS
Ray Tracer file
DIS
Distribution file (VAX Mail)
DIS
Thesaurus file (CorelDraw)
DIZ
Description file (Description in ZIP)
DKB
Graphics file (Ray Traced DKBTrace)
DL
Image
DLD
Datafile (Lotus 1-2-3)
DLG
C++ Dialogue Script
DLL
Dynamic-link library file
DLL
Export/Import Filter (CorelDraw)
DLS
Downloadable sound
DLS
Setup file (Norton DiskLock)
DMD
Visual dBASE data module
DMF
X-Trakker music module (MOD)
DMO
Demo file (Derive)
DMP
Dump file (Screen or Memory)
DMS
Compressed Archive (Amiga DISKMASHER)
DOB
Visual Basic User document
DOC
FrameMaker or FrameBuilder document
DOC
WordStar document
DOC
WordPerfect document
DOC
Microsoft Word document
DOC
DisplayWrite document
DOG
Screen Saver file (Laughing Dog Screen Saver)
DOH
Dependency Information file (Geoworks)
DOS
External Command file (1st Reader)
DOS
Network Driver file (PKT_DIS.dos)
DOS
Text file (DOS)
DOT
Word Document Template (Microsoft Word for Windows)
DOT
Line-Type definition (CorelDraw)
DOX
User document binary form (Visual Basic)
DOX
Text file (MultiMate 4.x)
DOZ
Description out of Zip (VENDINFO)
DP
Calendar file (Daily Planner)
DP
Datafile (DataPhile)
DPL
Borland Delphi 3 packed library
DPR
Project header (Borland C++)
DRAW
Acorn's object-based vector image
DRS
Display Resource file (Microsoft WordPerfect for Windows)
DRV
Driver
DRV
Device Driver (Required to make a device function)
DRW
Vector graphics (Micrografx)
DRW
Lotus Freelance Image
DRW
Pro/E drawing
DS4
Micrografx Designer Image
DR9
Directory file
DS4
Vector Graphics (Micrografx)
DSC
Discard file (Oracle)
DSD
Database file (DataShaper)
DSF
Micrografx Designer v7.x file
DSG
DooM saved game
DSK
Project Desktop file (Borland C++/Turbo Pascal)
DSM
Dynamic Studio music module (MOD)
DSM
Digital Sound Module (DSI)
DSN
ODBC Data source
DSN
Design (Object System Designer)
DSP
Microsoft Developer Studio project
DSP
Display parameters (Signature)
DSP
Graphics Display driver (Dr. Halo)
DSQ
Corel QUERY
DSR
Visual Basic Active designer file
DSR
Driver Resource (Microsoft WordPerfect for Windows)
DSS
Screensaver file (DCC)
DSS
Digital Sound file (Digital Soup))
DST
Embroidery machines graphic file
DSW
Desktop settings (Borland C++ 4.5)
DSW
Microsoft Developer Studio workspace file
DSX
Visual Basic Active designer binary file
DT_
Data file fork (Macintosh)
DTA
World Bank's STARS data
DTA
Datafile (Turbo C++)
DTD
SGML Document Type Definition (DTD) file
DTED
Digital terrain elevation data (geographic data format)
DTF
Database file (PFS-Questions & Answers)
DTF
Symantec Q&A relational database
DTM
Module file (DigiTrakker)
DTP
Text Document (Timeworks Publisher 3.x)
DPT
Publication file (Publish-It!)
DUN
Microsoft Dial-up Networking Export file
DUP
Duplicate Backup
DV
Digital video (MIME)
DVC
Datafile (Lotus 1-2-3)
DVI
Binary file (TeX)
DVI
Device Independent Document (TeX)
DVP
Desqview Program information (DESQview)
DVP
Device parameter file (AutoCAD)
DW2
Drawing file (DesignCAD for Windows)
DWC
Compressed Archive (DWC)
DWD
DiamondWare digitized file
DWF
Vector graphic (Autodesk)
DWG
Autocad Drawing
DWG
AutoCAD drawing, or older Generic CADD drawing file
DX
Digital Electric Corporation (DEC) Data exchange file
DXF
Drawing Interchange (eXchange) format,a text representation of the binary DWG format
DXF
Drawing Interchange Format (AutoCAD)
DXF
Data Exchange File
DXN
Fax document (Fujitsu dexNet)
DXR
Macromedia Director protected (not editable) movie file
DYN
Datafile (Lotus 1-2-3)
D64
Commodore 64 emulator disk image