.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.D Dialect Source Code File
D Programming Language Source Code File
.D_1 Polytext Ma'archot Meida Co. S"TaM ("Sifriyah Toranit M'muchshevet" - Computerized Torah Library)
.D_3 Polytext Ma'archot Meida Co. S"TaM ("Sifriyah Toranit M'muchshevet" - Computerized Torah Library)
.D$W MindStor Driver (digital wallet)
.D00 Ganbatte! Winamp Plug-in
.D01 Ganbatte! Winamp Plug-in
Note: .D00 and .D01 formats created by Jens-Christian Huus
of the Vibrants and contains OPL2 music data.
.D11 Macro Mania Data File
.D2D 3D Fassade Plus 2D/3D Object File
.D2I Shadowmaster Diablo II LOD Character Editor File
.D2S Diablo II Character and Equipment File
.D2V DVD Ripper File
.D3D CorelDream 3D File
Direct3D File
.D3F MS MechCommander 2 Encyclopedia
.D64 Commodore 64 Emulator Disk Image
.D8A AmBiz Productivity Pak Catalog
.DAD Chromeleon Channel Raw Data
.DAF OM2 911 Xchange Version 3 & 6 Document
.DAN ATI Radeon Video Driver File
.DAO Windows Registry Backup
IsoBuster File
.DAP Omnis5 Application File
MS Access Data Access Page [Buy Office XP at Shop.Microsoft]
.DARBY TheWord & Bible Companion Darby's Bible Translation Bible
.DAT Data (multiple programs)
Note: RDXR020305.DAT is Morpheus adware. Kill this and others with Ad-aware.
WordPerfect Merge Data
(also possibly) MPEG File
Mitsubishi DJ-1000 and Photorun Native Format
Gunlok Archive [Dragon UnPACKer]
Nascar Racing Archive [Dragon UnPACKer]
SPOT Graphic [XnView]
SHARP MZ-series Emulator RAM-Disk File
.DAWN Experimental File Format (.DAWN)
.DAZ Poser 3D File
.DB Paradox Database
Progress Database
Solid Database
WindowsXP Thumbnail Database
ANSYS Database
SmartWare Office Pac File (requires login)
Oracle Database
.DB$ dBASE Temporary File
Clarion Modula-2 Debug Info
.DB2 dBase II File
.DB3 dBASE III File
.DBA DataEase Data File
DarkBASIC File
.DBB ANSYS Database Backup
Mopheus Music File
.DBC MS Visual Foxpro Database Container
PROGNOSIS Database Collection Document File
.DBD Clarion Modula-2 Debug Info
Business Insight Data
Oracle Record Type
.DBF Database (multiple programs) [started as dBASE] [File Structure]
Oracle 8.x Tablespace File
ArcView Shape File (GIS-related file)
.DBG MS C++ Symbolic Debugging Info
Oracle Generator File
.DBI Photo Soap2 File
.DBK dBase Database Backup
Orcad Schematic Capture Backup File
.DBL WindowsXP Product Activation File (if on WPA.DBL in the System32 folder)
.DBM Cold Fusion Template
DataBoss Menu Template
DataEase Data File
OzWin CompuServe E-mail/Forum Access SYSOP File
.DBO dBase IV Compiled Program File
.DBOOK Pocket Diary Text
.DBQ Paradox Memo
.DBR Comdial VMMI Database
.DBS SQL Format Database
Word Printer Description File
.DBT Database Text File [dBASE] [File Structure]
Oracle Template
Foxbase Memo
.DBV Flexfile Memo Field File
.DBW DataBoss Database File
.DBX Database (multiple programs)
DataBeam Image
MS Visual Foxpro Table
.DC DesignCAD CAD File
.DC2 DesignCAD CAD File
Kodak DC25 Digital Camera File
DC2-PC Motion Control Command Language File
.DC5 DataCAD Drawing File
.DCA Visual Basic Active Designer Cache
IBM DisplayWrite Document Content Architecture Text File
D-PAS Portfolio Manager File [Education about D-PAS]
.DCB Concordance Database Control Block
.DCD Document Content Description File
FORTRAN Data File [FORTRAN]
INMOS Transputer Development System Occam Object Code
.DCF Design Rule for Camera File Systems File
DynSite Configuration File
Dyadic Data File
Disk Image File
.DCL DumpSec
DesignComposer Addition to Layout Knowledge Base
.DCLST DC and DC++ Direct Connect [File sharing network using DC++]
.DCM DCM Module Format
Dicom [XnView]
.DCP Delphi Compiled Packages
OS/2 Data CodePage
.DCR Shockwave File
Kodak Proprietary Image Format
.DCS Quark Desktop Color Separation Specification
ACT! Activity Data File
.DCT Dictionary (various)
MS Visual Foxpro Database Container
.DCU Delphi Compiled Unit
.DCV DriveCrypt Volume
.DCW Draft Choice for Windows
.DCX FAX Image [IrfanView]
ElectraSoft Fax
PC-Paintbrush File [SwiftView]
Bitmap Graphics [IrfanView]
Macros
MS Visual Foxpro Database Container
.DD Macintosh Compressed Disk Doubler Archive
C64 Doodle [XnView]
.DDB Device-Dependent Bitmap Graphics File
Design Database File (database definition file) [MS Access???]
INMOS Transputer Development System Occam Debugging Info
Protel 99SE Design Database File
.DDATA Pocket Diary Text File
.DDE Dynamic Data Exchange
.DDF BTRIEVE Data Dictionary File (allows other programs to access data)
Bitstream Fontware File
Doom Definition File
Music Library File
.DDI DiskDupe Image
Disk Doubler Image
.DDL MS Data Definition Language File (SQL Server Query Analyzer)
.DDM Intelliware Data Modeller (Data Mapping and Aliasing)
.DDP OS/2 Device Driver Profile File
Delphi 6 File
.DDS INMOS Transputer Development System Occam Compiler Descriptor
Photoshop Compressed Textures
.DDX Juno "Get" File
Device Data Exchange Format File (text CAD design exchange format)
.DDW CSPro File (combined IMPS and ISSA Census Processing System)
.DE MetaProducts Download Express Incompletely Downloaded File
.DEB DOS Debug Script
Debian Linux Package
.DEC VersaPro Declaration File
.DESK Card Deck File
.DESKLINK MS Windows Explorer Desktop Controls
.DEF Definitions
Defaults
SGML Tag Definition
Modula-2 Definition Module File
SmartWare II Data File
C++ Definition
3D Fassade Plus Define Module File
Geoworks Assembly Header File
.DEI Gerber Design Engineered Interface
.DEL Data
.DEM Descent Demonstration
USGS Map
Digital Elevation Model File (GIS-related file)
Half-life Game File
.DEP Setup Wizard Dependency
.DEPLOY DeployMaster Setup Script
.DER Certificate File
.DES Description Text
Tribes 2 Game File
Quickbooks Template
Pro/DESKTOP File
Interscope BlackBox File (encryption program)
.DEU ATI Radeon Video Driver File
.DEV Device Driver
Device Independent TeX
LaTeX File
.DEX WinGlucofacts File (diabetes management software)
.DEZ DES Encrypted Zip File
.DF Lightscape Parameters
.DF1 Omnis7 and Omnis Studio Database File (also .DF2, .DF3, etc.)
.DFC Voicemail File (Trio Voice Communications and maybe others)
.DFD File Flow Diagram Graphic
.DFF Digital Animation Format
Grand Theft Auto 3 Export Format
.DFI Digifont Outline Font Description
.DFL Signature Default Program Settings
.DFM Borland C++ Builder 6 Form
Borland Delphi Form
File Flow Diagram Model
.DFP Stabilogram Diffusion Analysis File (Requires MatLab)
Digital Fusion Plug-in
.DFS Delight Sound File
.DFT Fakt2000 File
SolidEdge CAD File
Workshare Synergy File
PC Draft File
.DFV Word Print Format Template [Buy Office XP at Shop.Microsoft]
.DG Autotrol Graphics
.DGC TurboTax-related File
.DGK Delcam Powershape/Powermill (3D CAD)
.DGN Microstation CAD Drawing File
Intergraph Graphics
Dragon 32 Emulator
.DGO Dimitrius Settings File (Dimitrius is program author)
.DGR Fax Page (MS Outlook Express)
DART Pro 98 File Group Details
Keeptool ER Diagrammer
.DGS AT Advanced Diagnostics File
.DH Geoworks Dependency Information File
.DHE MS Help Workshop Dialog Box Help Editor Document
.DHP Dr. Halo PIC
.DHT Gauss Data File
.DIA Computer Support Corp Diagraph Graphics File
DIA Drawing
.DIB Device-Independent Bitmap Graphic [IrfanView]
.DIC Dictionary (various)
.DIF Data Interchange Format
DIFF Command Output (patch script)
.DIG Text Document
Digilink Format
Sound Designer Audio File
.DIL DesignComposer Input DIL Script
.DIN DataEase File
ADC Labs eWave File (broadcast automation software)
.DIP Graphics File
.DIR Procomm Plus Dialing Directory
Macromedia Director File
DEC VAX Directory
Worms Armageddon Archive [Dragon UnPACKer]
.DIS DKB Ray Tracer File [XnView]
DATAIR Data Import Specification Layout File
VAX Mail Distribution File
Corel Draw Thesaurus
.DISCO MS .NET Web Service Discovery File
.DIT MS Win2000 Active Directory Schema
.DIVX Movie Encoded with DivX-codec
.DIZ Description In Zip File
.DJE MattBatt iAM-player
.DJV DjVu File [XnView]
.DJVU DjVu File [XnView]
.DKB DKBTrace Ray-Traced Graphics File
.DL Animation File (this appears to be associated with glifomon.zip, a probable porno file)
Masked .DLL File (often used by malware to hide .DLL files from virus scanners [e.g., Sub7])
.DL_ Compressed .DLL File in an Install Archive
.DL4 Lindab Dimsilencer File
.DLC Echelon HQ Configuration File
Model Dislocation File
3D Studio Max Animation Controller File (Character Studio)
.DLD Lotus File
.DLE Macromedia Designer 3D Translator File (Also 3D Studio Max)
.DLF Belkin Router Firmware Update
.DLG Dialog Resource Script
C++ Dialogue Script
Infinity Engine Game Dialog File
Digital Line Graph (U.S. Geological Survey geographic database)
.DLK INMOS Transputer Development System Occam Compiler Link Info
.DLL Dynamic Link Library
CorelDraw Export/Import Filter
.DLM Dirty Little Helper Cheat File
Dynamic Link Module
ASCII Delimited File (sometimes used in voting systems)
3D Studio Max Character Studio
.DLS Downloadable Sounds (Interactive Music Architecture)
Norton DiskLock Setup File
ADAPTA DLS/32 Supply Chain Planning (ASCII file with general number data)
dataLive Database Engine File
.DLU Dirty Little Helper Update File
.DM2 Quake 2 Demo File [Viewer]
.DM3 Quake 3 Arena Demo File [Viewer]
.DM_48 Quake 3 Arena Demo File [Viewer]
.DM_57 Return to Castle Wolfenstein Demo File [Download site]
.DM_59 Return to Castle Wolfenstein Demo File [Download site]
.DM_66 Quake 3 Arena Demo File [Viewer]
.DM_67 Quake 3 Arena Demo File [Viewer]
.DMC Medical Manager DML System Compiled Script
.DMD Visual dBASE Data Module
dB2K/dQuery Web DataModule
OS/2 Warp Device Manager Driver
.DME Medical Manager DML System Data Merge
.DMF Delusion/XTracker Digital Music File
Packed Amiga Disk Image
.DMG Macintosh OS X Disk Image File (Treated like a real disk)
.DMK Digimask File (3D human faces)
.DML Darn! Shopping! Mall File
Medical Manager DML System Script
.DMO Derive Demo
.DMP Dump (various)
INMOS Transputer Development System Occam Core Dump
.DMS Amiga DISKMASHER Compressed Archive (see ADF) [Amiga Forever]
.DMT Delcam Machining Triangles (3D CAD)
.DMX Medical Manager DML System Index for Custom .DME Files
ProTrader Database
.DN8 Blue Martini UTF-8 Encoded DNA File (eCRM)
.DNA Blue Martini DNA File (eCRM)
.DNA.XML Blue Martini XDNA File (eCRM)
.DNC Machine Tool Communications
.DND ClustaW Tree File
.DNE Darn v5+ (Windows) Events List
Netica Bayes Net File
.DNG Dungeon File (created by ID software)
.DNI realMyst 3D Archive [Dragon UnPACKer]
.DNL DigitalWebBook Electronic Book (requires installation of DigitalWebBook plug-in)
netMod Modem Firmware Upgrade File
.DNS DynSite Plug-in File
.DO Stata Batch Analysis File
DigitalOutrage Hosting Control Panel Info
.DOB User Document Form File
.DOC Document or Documentation (many programs/formats)
MS Word Document [Buy Office XP at Shop.Microsoft]
DisplayWrite 4 File
.DOCHTML MS Word HTML Document [Buy Office XP at Shop.Microsoft]
.DOCMHTML MS Word HTML Document [Buy Office XP at Shop.Microsoft]
.DOF Racer 3D Geometry File
.DOG Laughing Dog Screen Saver
.DOH Geoworks Dependency Information File
.DOL D-PAS Portfolio Manager Flexible Benchmarking Analysis File [Education about D-PAS]
.DOO Atari Doodle [XnView]
.DOP Digital Orchestrator File
.DOQ Digital Orthophoto Quadrangle (digital aerial photo)
.DOQQ Digital Orthophoto Quarter Quadrangle (smaller digital aerial photo)
.DOS Text File/DOS Specification Info
1st Reader External Command File
Network Driver File
.DOT MS Word Document Template [Buy Office XP at Shop.Microsoft]
Corel Lines-Definition
.DOTHTML MS Word HTML Document Template [Buy Office XP at Shop.Microsoft]
.DOX Text File
MultiMate Document
User Document Binary Form File
.DOZ VENDINFO Description Out of Zip File
.DP Daily Planner Calendar File
DataPhile Data File
.DPA Serif DrawPlus Animation
.DPC DiscPlay Collection File
Delphi Package Collection File
.DPJ DeskProto CAM Project File
.DPK Delphi Package File
.DPL Borland Delphi 3 Packed Library
Digital Photo Librarian Database
.DPP Serif DrawPlus Drawing
.DPR Borland C++ (or Delphi) Default Project
.DPS DivX XP Skin (.ZIP file format)
.DPT Publish-It! Publication File
.DPX Digital Moving Picture Exchange [XnView]
.DPY Realpolitik Saved Game
PROGNOSIS Display Document File
.DQA itaz doQument File
.DQB D-PAS Portfolio Manager File [Education about D-PAS]
.DQD itaz Default doQument Database
.DQY MS Excel ODBC Query File [Buy Office XP at Shop.Microsoft]
.DR9 Directory File
.DRC Orcad Schematic Capture Design Rules Check Report File
DriveCrypt Container File (Note: This extension was changed to .DCV due to a WinXP conflict.)
Borland Delphi Compiled Resource File
.DRES Diagnosis Results
.DRJ Deraj Data File
.DRL DocObject Resource Locator
.DRM Steinberg Cubase Drum File
.DRN Darn for DOS
.DRS WordPerfect Driver Resource
Age of Empires 2 Archive [Dragon UnPACKer]
.DRV Device Driver
.DRW Drawing (various)
Micrografx Vector Graphic
Pro/E Drawing
.DRX Adobe Photoshop Tutorial
.DRZ Draz Paint [XnView]
.DS Chemisty Software
PhotoMax Drive
HP Officejet T Series All-in-One TWAIN File
.DS4 Micrografx Designer Graphics (ver 4)
.DSA DasyTec DASYLab File
.DSB DasyTec DASYLab File
.DSC Oracle Discard File
Nikon Coolpix Disk Identification File
dpkg-source (info needed help unpack Debian source archives)
.DSCE Diagnosis Scenario
.DSD DataShaper Database File
Document Structure Definition File
.DSES Diagnosis Session
.DSF Micrografx Designer
PC-TRUST Document Signer (Extension means file is signed)
Delusion/XTracker Digital Sample
.DSG Doom Saved Game
.DSH Dashboard PDA Wallpaper
.DSI Digital Sound Module Tracker Format (unverified)
R-Studio Hard Disk Scan Results File
.DSK Borland C++ or Turbo Pascal Project Desktop File
Novell Driver File
Lotus Notes Design Elements
SHARP MZ-series Emulator File
.DSL Lingvo User Feature Dictionary
.DSM Delphi Symbol File
Digital Sound Module Tracker Format
Dynamic Studio Music Module
.DSN ODBC Data Source
SureThing Office Labeler (formerly DesignExpress) Document
Object System Designer Design
Orcad Schematic Capture Schematic File
.DSP Signature Display Parameters
Dr. Halo Graphic Screen Driver
MS Developer Studio Project
.DSQ Corel QUERY File
DASYLab Worksheet Sequence
.DSR WordPerfect Driver
Active Designer File
.DSRES MS Dungeon Siege Texture File
.DSS Digital Soup Digital Sound File
DCC Active Designer File
Digital Speech Standard File (Voice Recorders & IBM's ViaVoice)
.DSST ConsumerPoint File (CACR Marketing)
.DST PC-RDist Distribution File
Embroidery Machine Stitch File (VeePro) [possibly read with Melco Sizer Software]
.DSW MS Developer Studio Workspace
Borland C++ Desktop Settings
.DSX Active Designer Binary File
.DSY PC Draft Symbol Library
.DSZ Embroidery Machine Stitch File (VeePro)
.DT_ Macintosh Data File Fork
.DTA Data (Various)
Stata Binary Saved Datasets
Hidden & Dangerous Archive [Dragon UnPACKer]
.DTB DesignTools PCB Design and Make (printed circuit design - common in UK schools)
.DTD SGML Document Definition File
DesignTools 2D Design (vector drawing - common in UK schools)
.DTEA Diagnosis Template Archive
.DTF Q&A Database
MS Exchange Header File (Used when sending to Lotus Notes)
.DTL Hal/Supernova/Lunar/LunarPlus Screen Readers/Magnifiers
.DTM DigiTrekker Module
Softshare Delta Translation Map
.DTP SecurDesk! Desktop
Timeworks Publisher Text Document
Publish-It! Publication
Pressworks Template File
.DTQ Database Tools Query
.DTS Digital Surround Audio File Format
MS Data Transformation Services (Data Transformation Packages used by MS SQL Server)
.DTX LaTeX Source and Documentation Archive
E-Book File
DocuTech Print6 Engine File (Prints DocuTech Closing Documents)
LithTech Model Texture File
.DUN Dial-Up Network
.DUP Duplicate Backup
.DUS Readiris Font Dictionary
.DV DESQview Script
Digital Video File
.DVB Visual Basic for Applications Macro Project
.DVC Lotus File
.DVF DV Studio Camcorder Graphics File
.DVI TeX Device Independent Document
.DVP DESQview Program Information
AutoCAD Device Parameter
.DVR Device Driver
.DW2 DesignCAD Drawing File
.DWC Compressed Archive
.DWD DiamondWare Digitized File
.DWF Autodesk WHIP! Drawing Web File
MS WHIP autoCAD REader Drawing Web File
.DWG AutoCAD Drawing Database
Drafix Drawing
.DWI Dance With Intensity (dance simulator)
.DWK Locked DWG File
.DWN Cisco Download File (usually a system update)
Firmware Update File (several)
Experimental File Format (.DAWN)
.DWP Dweep Game Levels
DeScribe Document File
.DWS Dyadic Workspace File
AutoCAD Standartization File
.DWT AutoCAD Template/Prototype File
Macromedia Dreamweaver Template File
Demon's World Game Texture File
.DWY Dwyco Video Clip
.DX Document Imaging File
Digital Electric Corporation (DEC) Data Exchange File
Deus Ex File
.DXB Drawing Interchange Binary
.DXF AutoCAD Drawing Interchange Format
.DXL Dapyx MP3 Explorer (MP3 database organizer)
DOORS Extension Language
.DXMAX Oozic File
.DXN Fujitsu dexNet Fax Document
.DXPACK DesktopX Object (customizes the Windows Desktop)
.DXR Vegas Jackpot Gold Game File
.DXTHEME DesktopX Theme File (customizes the Windows Desktop)
.DXR Macromedia Director Protected Movie File
Dependable Strengths Administrator Resources (Macintosh)
Green Building Advisor File
.DYN Lotus File
.DZ Dzip Compressed File
