Alphabetically: D
Extension File Description File Type
.d
D Source Code File
Developer
OPL2 FM Audio File
Audio
OPL2 FM Audio File
Audio
DVD2AVI File
Video
Game Maker 3D File
3D Image
Datel Video File
Video
Commodore 64 Disk Image
Disk Image
Toshiba Pasopia 7 Disk File
Disk Image
Windows Registry Backup File
Backup
DeepAnalysis Save File
Data
PowerISO Direct-Access-Archive
Disk Image
Digital Asset Exchange File
3D Image
Digital Anchor File
Data
Download Accelerator Plus URL List
Misc
DeltaMaster Analysis Model
Data
Disk at Once CD/DVD Image
Disk Image
Access Data Access Page
Web
DAR Disk Archive
Compressed
DeltaMaster Analysis Session
Data
Data File
Data
Analysis Studio Offline Data File
Data
DVR365 Video File
Video
PSP Compressed ISO Disc Image
Disk Image
Dragon Age: Origins Game File
Game
.db
Database File
Database
dBASE II Database
Database
SQLite Database File
Database
Palm Datebook Backup File
Backup
Skype User Information File
Settings
FoxPro Database
Database
DemoShield Project
Data
Database File
Database
FoxPro Debugger Configuration
Settings
Sony Ericsson Mobile Phone Backup File
Backup
ColdFusion Server File
Web
Visual Studio OR Design File
Developer
DarkBASIC Object
Developer
Visual Studio Database Project File
Developer
Database Text File
Database
Database Variable Field
Database
Outlook Express E-mail Folder
Misc
.dc
DesignCAD Design File
CAD
Bloomba E-mail Message
Misc
DesignCAD 2D ASCII Drawing
CAD
DesignCAD 3D ASCII Drawing
CAD
ViaThinkSoft (De)Coder 4 File
Encoded
DesignCAD Drawing
CAD
DriveCam Video
Video
DRM Content Format File
Audio
Resolume Deck File
Video
AutoCAD Dialog Definition File
Settings
DICOM Image File
Raster Image
DiskCatalogMaker Thumbnail-Enabled Catalog
Data
DisCryptor Encrypted Virtual Disk Archive
Encoded
Disc Cover File
Misc
Adobe DNG Camera Profile
Settings
Disc Copier Project File
Data
Adobe DNG Camera Profile Recipe File
Data
Kodak RAW Image File
Raster Image
Desktop Color Separation File
Vector Image
Adobe InDesign Document Presets File
Settings
FoxPro Database Memo
Database
DC++ Partially Downloaded File
Misc
Delphi Compiled Unit
Developer
FoxPro Database Index
Database
.dd
DiskDouber Archive
Compressed
DivX Temporary Video File
Video
Device Dependent Bitmap
Raster Image
DivX Descriptor File
Data
DivX Descriptor 2 File
Data
Diamond Directive File
Settings
ClarisDraw Drawing
Vector Image
DirectDraw Surface
Raster Image
Football Manager Keep Player Data File
Game
Debian Software Package
Compressed
Declaration File
Developer
Dr. Engrave Document
Vector Image
Module-Definition File
Developer
Memorize-It Flashcard Deck
Misc
Video Game Demo
Game
Pro/DESKTOP CAD File
CAD
Microsoft Expression Design Drawing
Vector Image
Desktop Shortcut
System
Desktop Entry File
Misc
Windows Device Driver File
System
SoundEdit Recorded Instrument
Audio
DEXIS Digital X-ray File
Data
Omnis Native Datafile
Developer
Defractor 2 Instrument
Audio
Defractor Instrument
Audio
RenderWare Model File
3D Image
Delphi Form
Developer
Mac OS X Data Fork Font
Font
Fusion Plugin File
Plugin
DVD Flick Project
Data
Solid Edge Draft Document
CAD
Drafix CAD File
CAD
FlashCAD Drawing Database
CAD
TurboTax Tax Form
Misc
Delcam 3D Model File
CAD
MicroStation Design File
CAD
Dagesh Pro Document
Text
Dynamic HTML file
Web
Troubleshooting Pack Cabinet File
System
Troubleshooting Pack Configuration File
System
Troubleshooting Pack File
System
Device Independent Bitmap File
Raster Image
Dictionary File
Misc
Microsoft Dictionary Proofing File
Settings
Data Interchange Format
Data
Digilink Audio File
Audio
Summation Batch Load File
Data
DIME File
Encoded
Direct Internet Message Encapsulation File
Encoded
DivX Temporary Video Info File
Settings
Adobe Director Movie
Video
KDE Folder View Properties File
Settings
DISCO Discovery Document
Web
DISCO Discovery Output File
Web
Linux Virtual Hard Disk
Disk Image
Linux LiveCD Information File
Misc
Mac OS X Distribution Script
Compressed
DIVA-GIS Project File
GIS
DivX-Encoded Movie File
Video
DIVA-GIS Export File
GIS
Description in Zip File
Text
Dynojet Map File
Data
DjVu Image
Raster Image
DjVu Image
Raster Image
DriveLock FDE Disk Key File
Misc
.dl
Zoo Tycoon 2 Data File
Game
Download Link Container File
Encoded
EdLog Compiled Program
Executable
Digital Line Graph
GIS
Dynamic Link Library
System
Akamai Download Manager File
Misc
3ds Max Plug-in
Plugin
Downloadable Sounds File
Audio
3ds Max Utility Plug-in File
Plugin
CATIA 4 Export File
CAD
Sony VDU Video File
Video
.dm
DRM Delivery Message
Audio
Toad Data Modeler 2 File
Data
Digital Multimedia Broadcasting File
Video
Datamartist Data Canvas File
Data
Delusion Digital Music File
Audio
Mac OS X Disk Image
Disk Image
Mac OS X Disk Image Part
Disk Image
DynaScript File
Web
Duke Nukem 3D Demo File
Game
Windows Memory Dump
System
Disk Masher Image
Disk Image
Music Disc Creator Project File
Audio
Sound Editor Project File
Audio
DivX Temporary Video Data File
Data
VideoWave Movie Project File
Video
VideoWave 3D Movie Project File
Video
PhotoSuite Project File
Data
VideoWave SlideShow Project File
Video
Wolfenstein 1.00 Demo Movie File
Game
Wolfenstein 1.02 Demo Movie File
Game
Wolfenstein 2.06 Demo Movie File
Game
CA Backup and Migration Backup File
Backup
Windows Dancer File
Video
Netica Text File
Text
Digital Negative Image File
Raster Image
DNAML eBook File
Misc
.do
Java Servlet
Web
Visual Basic UserDocument
Developer
Microsoft Word Document
Text
Microsoft Word HTML Document
Web
ObjectDock File
Data
Word Open XML Macro-Enabled Document
Text
Microsoft Word MIME HTML Document
Web
Microsoft Word Open XML Document
Text
Gamecube Executable File
Game
Dolphin Folder View Settings File
Settings
Word Document Template
Layout
Microsoft Word HTML Document Template
Web
Word Open XML Macro-Enabled Document Template
Text
Word Open XML Document Template
Text
Temp File
Backup
Partially Downloaded File
Web
MSN Download Settings File
Settings
Visual Basic Binary UserDocument
Developer
DataPower Database File
Database
FaxMaster Document
Misc
Ovation Pro File
Layout
Nintendo DS Movie File
Video
Delphi Package
Developer
Delphi Package Library
Developer
Pro Tools Plugin File
Plugin
Depiction Data File
Data
Serif DrawPlus Drawing File
Vector Image
Delphi Project
Developer
DivX Player 2 Skin File
Settings
Digital Picture Exchange File
Raster Image
Excel Query File
Database
.dr
DRM Rights Object
Misc
DRM Rights Object
Misc
Dream Animated Wallpaper File
Video
I-Doser Audio Drug File
Audio
Gerber Drill Rack File
Data
Cubase Drum Map File
Settings
Device Driver
System
Drawing File
Vector Image
SolidWorks Drawing Template
CAD
.ds
LMMS DrumSynth File
Audio
Orchida Embroidery File
Data
CoolPix Disk Identification File
Misc
AutoCAD Drawing Set Description File
Settings
Delusion Digital Sound File
Audio
Control Studio Document
CAD
Disk Image
Disk Image
DockX Skin
Misc
Digital Sound Module
Audio
Database Source Name File
Database
Visual C++ 6 Project
Developer
Digital Speech Standard File
Audio
AutoCAD Sheet Set File
CAD
DownloadStudio Incomplete Download
Misc
DeSmuME Save File
Text
Visual C++ 6 Workspace File
Settings
Diet Studio XML File
Data
Directory Synchronizer Project File
Data
Xcode Debug Symbols File
Developer
Orchida (OES) Embroidery File
Data
Mac OS X Folder Settings File
Settings
DTED Level 0 File
GIS
DTED Level 1 File
GIS
Windows Live Messenger Emoticon Image File
Raster Image
Chain Engineering Database
Data
Document Type Definition File
Developer
Domino Temporary File
Misc
DigiTrakker Module
Audio
Publish-iT Document
Layout
DATroniC Data Recording
Data
DTS Encoded Audio File
Audio
DTS-HD Master Audio File
Audio
Desktop Wallpaper
Raster Image
Macintosh Data Fork
Misc
Readiris Font Dictionary
Misc
.dv
Digital Video File
Video
Microsoft DV-AVI Video File
Video
Divinity 2 Data File
Game
Bosch Security Systems CCTV Video File
Video
DOS Device Driver
System
RipIt DVD Package
Video
iDVD Project File
Data
DVDStyler Project File
Data
Sony Digital Voice File
Audio
Device Independent Format File
Text
Virtual Library File
Raster Image
Cook'n Cookbook File
Data
Microsoft Digital Video Recording
Video
DivX Video File
Video
Emulex DWC Firmware Update File
Misc
DiamondWare Digital Audio File
Audio
Design Web Format File
3D Image
Design Web Format XPS File
CAD
AutoCAD Drawing Database File
CAD
Dance With Intensity Song File
Data
TurboCAD Drawing Lock File
Misc
Paperless Document Library
Misc
Firmware Update File
Misc
DarkWave Studio Project File
Data
AutoCAD Drawing Standards File
CAD
Dreamweaver Web Page Template
Web
DVD MovieFactory Project File
Data
.dx
DEC WPS Plus File
Text
Drawing Exchange Binary
Vector Image
AutoCAD Data Extraction Template
CAD
Drawing Exchange Format File
CAD
CDBurnerXP Data Disc Compilation File
Settings
Protected Macromedia Director Movie
Video
Deus Ex Saved Game
Game
AutoCAD Drawing Interchange Attribute File
CAD
Xerox Printer Driver Configuration File
System
Mach-O Dynamic Library
Developer
DirectorZone Menu Template
Video
DirectorZone Particle Effect File
Video
DirectorZone Title File
Video