List of file formats (alphabetical)

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List of file formats (alphabetical)

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This
alphabetical list of
filename extensions

contains standard extensions associated with
computer files
.

Contents

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

#


Sym


[
edit
] Sym

Ext.

Description

Used by

###

Temporary file

program
-
dependent format

#24

Printer data file for
24 pin matrix
printer

LocoScript

#IB

Printer data file

LocoScript

#nn

Part of file image

Long

#SC

Printer data file

LocoScript

#ST

Standard mode
printer definitions

LocoScript

$$$

OS/2 archive file
(i.e. archives.$$$,
keys.$$$)

OS/2

$$$

Temporary file


$?

ZX Spectrum

file in
HOBETA format


$00

Pipe file

DOS

$DB

Temporary file

d
BASE IV

$ED

Editor temporary
file

MS C

$O1

Pipe file

DOS

$VM

Virtual manager
temporary file

Windows 3.x

)2(

LHA archiver
temporary file

LHA


??$

Backup

file

P
-
CAD


??_

Microsoft packed
file

Expand


?DK

Disk image

Loaddskf.exe


?UT

Nonpacked FTN
mail (?
-

flavor)

FTN sof
tware


!ut

Unfinished
µTorrent

download

µTorrent

___

Adinf table

Adinf

EX_

Compressed
executable file

Note: EX could be any first two characters in a file extension (e.g.
BM_ for
compressed bitmap (BMP), DL_ for compressed library,
etc.) Files compressed using this method have been in use on
Microsoft software CDs and floppies since around 1995.


?Q?

Squee
ze

for
CP/M

and
MS
-
DOS


~$~

Temporary file

1st Reader

~??

Old Backup files
(.MNU to .~MN)

Resource Workshop
-

Borland Delphi

~H

Cardfile heap

AZZ Cardfile

μ

Metrowerks

Codewarrior

project


Π

THINK C

project


@@1,
@@2,
etc.

Hidownload

temporary file

Hidownload

[
edit
] #

Ext.

Description

Used by

0

Compressed harddisk data

DoubleSpace

0B

Printer font with lineDraw extended character
set

PageMaker

1337

Kiwi's RTCoD File Format

Se7ensins & Teh1337

001, 002,
...

Split parts of a single whole file

HJSplit
, JJSplit,
split (Unix)

(when
using numeric suffixes)

1

Fax


1

Fax

many

1

Roff/nroff/troff/groff source for manual page

cawf2.zip

123

Spreadsheet

Lotus 1
-
2
-
3 version 9
-

Lotus 1
-
2
-
3
version 97

15U

Printer font with PI font set

PageMaker

1ST

Usually README.1ST text file


2GR

286 Grabber File

Win

301

Fax

Super FAX 2000
-

Fax
-
Mail 96

386

Intel 80386 processor

driver

Windows 3.x

386

Windows virtual device driver

Win

3DMF

QuickDraw 3D Metafile

QuickDraw

3DS

3D Studio Graphics format

3D Studio

3DT

Database in which the meta
-
data of a 3D
Topicscape is
held

3D Topicscape

3DV

3
-
D wireframe graphics by Oscar Garcia

3dv wireframe viewer

3FX

Effect

CorelChart

3GR

386 Grabber File

Win

3GP

Mobile Phone Video


3T4

Binary file converter to ASCII

Util3

4C$

Datafile

4Cast/2

4MD

Musical file


4SW

4DOS Swap File

4DOS

4TH

FORTH

source code file

ForthCMP
-

LMI Forth

555

16 bit per pixel image file format (5bit per
component)

Sierra Entertainment

668

Music (the mixing
is always at 12048

Hz)


669

Music (8 channels)

The 669 Composer

6CM

Music (6 Channel Module)

Triton FastTracker

75

75x75 dpi display font

Ventura Publisher

7z

7
-
Zipped

file


8

A86

assembler source code file


85

85x85 dpi display font

Ventura Publisher

8BF

Adobe
Photoshop

compatibile filters/plugins


8CM

Music (8 Channel Module)

Triton FastTracker

8M

Printer font with Math 8 extended character
set

PageMaker

8U

Printer font with Roman 8 extended character
set

PageMaker

83p

Executable program for TI
-
83 Plus Graphing
Calculator

TI Connect

89p

Executable program for TI
-
89/89 Titanium

Graphing Calculator

TI Connect

8xp

Executable program for TI
-
83/84 Plus
Graphing Calculator

TI Connect

91

91x91 dpi display font

Ventura Publisher

96

96x96 dpi display font

Ventura Publisher

[
edit
] A

Ext.

Description

Used by

A

ADA

source code file


A

Library

Unix

A##

AlZip Compressed Files' pieces


A11

Graphics AIIM image file


A80

Assembler language source for 8080


AA, AB,
...

Split parts of a single whole file

split (Unix)

AAC

Advanced Audio Coding

is a standardized,
lossy compression and encoding scheme
for digital audio.


AAF

AutoPatcher

file


AAF

Advanced Authoring For
mat

is an
advanced media wrapper file for
professional applications.


AAS

Animation Play Script

AAPlay

AB6

Datafile

ABStat

AB8

Datafile

ABStat

ABC

Document

ABC FlowCharter 1.0

ABP

Data

ABComp

compressed

ABP

AVS Barcode Profile

AVS Barcode

Source

ABF

Adobe Binary Screen Font

Adobe Systems

Software

ABK

Automatic backup file

CorelD
RAW

ABM

Image PALS album file


ABM

Album file (various programs)


ABR

Adobe Brush file for
PhotoShop

PhotoShop

ABS

Abstracts (info file)


ABS

Data file

Abscissa

AC

Project backup

Audit Command Language (ACL)

ACA

Project

Project Manager Workbench

ACB

Archive

ACB

ACB

see ACMB


ACC

Program (
DR
-
DOS

-

ViewMax)

GEM / resident

ACCDA

Data

Microsoft Access

Database Wizard
(Open XML)

ACCDB

Data

Microsoft Access

Database (Open XML)

ACCDE

Data

Microsoft Access

Database Wizard
(Open XML)

ACCDT

Data

Microsoft Access

Database Template
(Open XML)

ACCDU

Data

Microsoft Access

Database Wizard
(Open XML)

ACE

Archive

ACE

ACF

Adobe Custom Filter for PhotoShop

PhotoShop

ACL

Project

Audit Command Language (ACL)

ACL

AutoCorrect List

Microsoft Office

ACM

Audio Compression Module add
-
on

Win

ACMB

Graphics file


ACO

Adobe Color Palette


ACT

ACTOR source code file

ACTOR

ACT

Animations Works Actor (Graphics cell)

Animation Works

ACT

FoxDoc Action Diagrams

FoxPro

ACT

Presentatio
n

Action!

AD

AfterDark
screensaver

module

AfterDark

AD2

ADPCM 2
-
bit compressed voice file

ZFAX

AD3

ADPCM 3
-
bit compressed voice file

ZFAX

ADA

Ada

source code file


ADB

Ada

Package Body


ADC

Bitmap graphics (16 colors)

Scanstudio

ADC

Dictionary

Lingvo

ADD

OS/2

adapter device driver


ADF

Amiga Disk File

unADF, UAE, WinUAE etc...

ADG

Data

ADG 3D Scene

ADI

Graphics file

AutoCAD

ADI

Database Index File

Advantage Database Server

ADICHT

LabChart data acquisition file

ADInstruments

ADL

MCA adapter description library

QEMM

ADM

After Dark support file

AfterDark

ADM

ADEM file format

ADEM

ADI

Database Memo File

Advantage Database Server

ADN

Add
-
in

Lotus 1
-
2
-
3

ADR

After Dark support file

AfterDark

ADS

Ada

Package Specification


ADT

WoW geographical map location file

Blizzard Entertainment games
(various)

ADT

Datafile for cardfile application

HP NewWave

ADT

Dictionary

Lingvo

ADT

Fax

AdTech

ADI

Database Table

Advantage Database Server

ADV

GUS device driver

Gf166.com

ADX

Document

Archetype Designer

ADZ

Amiga Disk Zipped (See
Amiga Disk File
)

GZip

AEP

After Effects Project File

Adobe After Effects

AF2

Flowchart

ABC FlowCharter 2.0

AF3

Flowchart

ABC FlowCharter 3.0

AFI

Truevision bitmap graphics


AFL

Font file (for Always)

Lotus 1
-
2
-
3

AFM

Datafile for cardfile application

HP NewWave

AFM

Type 1 font metric
ASCII

data for font
installer

ATM
-

many

AFP

Shape palette

ABC
FlowCharter

AFT

Template

ABC FlowCharter 3.0

AFW

Workplace

ABC FlowCharter 3.0

AGR

ArcView

ASCII grid


AHK

AutoHotkey script file

AutoHotkey

AI

Vector graphics file

Adobe Illustrator

AIF

see AIFF


AIFC

Audio Interchange File Format

with
Compression


AIFF

Audio Interchange File Format

Convert (c) Villena

AiM

Asm Text Mode Image File

The Ultimate Draw

AIN

Archive

AIN

AIN

Job schedule

AutoIntern

AIO

APL programming language

file transfer
format file


AIR

Adobe AIR installation package

The
Adobe AIR

runtime environment.

AIS

Array of Intensity Samples graphics file

Xerox

AIX

Datafile for cardfile application

HP NewWave

AKM

"
Akai

Multitimbral"
sample

information
file

Akai

S5000 and S6000 hardware
samplers

(
MS
-
DOS
-
based) and
compatible
software samplers

AKP

"
Akai

Program"
sa
mple

information file

Akai

S5000 and S6000 hardware
samplers

(
MS
-
DOS
-
based) and
compatible
software samplers

ALC

Molecular coordinates

Alchemy
,
RasMol

ALG

Activity Log

ARCSOLO

ALE

Avid Log Exchange (used in film & video
editing)

Avid

ALL

Arts & Letters symbol and font files

Arts & Letters

ALL

Filelist
w/ all files

FRQView

ALL

Format file for working pages

Always

ALL

General printer information

WordPerfect

for Win

ALO

Almanac support file


ALT

Menu file

WordPerfect Library

ALZ

AlZip Compressed

Files


AMD

Maxum chromatograph offline database

Siemens Maxum Chromatograph

AMF

Music (Advanced Module Format)

DMP

AMG

Archive

AMGC

AMG

System image file

ACTOR

AML

AutomationML

AutomationML Group

AMR

Audio format for mobile phones (Nokia,
SonyEricsson)


AMS

Adobe Monitor Setup
calibration file

PhotoShop

AMS

Music format


ANA

Lumina Decision Systems
Analytica

file


ANI

Animation cursors for Win

Win95
-

WinNT

ANI

Animation

IconAuthor

ANM

Animation

Deluxe Paint Animator

ANN

Help Annotations

Windows 3.x

Ann

Multi volume ARJ archive

ARJ

ANS

ANSI character graphics (animation) file

ANSView

ANS

ASCII text ANSI character set

NewWave Write

AOL

America On
-
line
for Windows DLL

Win

AOS

Add
-
On Software

Nokia 9000

AP

Archive

WHAP

AP

Datafile

Datalex EntryPoint 90

APC

Printer driver

Lotus 1
-
2
-
3

APD

Printer driver

Lotus 1
-
2
-
3

APE

Monkey's Audio

(Lossless)

audio media players

APF

Printer driver

Lotus 1
-
2
-
3

API

Adobe Printer Ink file for PhotoShop

PhotoShop

API

Passed parameter file

1st Reader

API

Printer driver

Lotus 1
-
2
-
3

APL

APL

work space format file


APL

Support module used by Manugraphics
APL products


APL

EV
-
Dos Application File


APM

Authorware Macintosh

Authorware

APP

Add
-
in application file

Symphony

APP

Application object file

dBASE Application Generator

APP

Application

FoxPro

APP

Application and Application Bundle

Mac OS X

APP

Executable workflow / macro file

Automator

APP

Executable application file

DR
-
DOS

-

NeXTstep
-

Atari

APP

Generated application

FoxPro

APR

Employee performance review

Employee Appraiser

APW

Authorware Windows

Authorware

APX

Appexpert database file

Borland C++ 4.5

AR

Argon
-

for 3D Modeling

Ashlar
-
Vellum

AR7

Archive

AR7

ARC

Archive

ARC

-

PKARC
/PKXARC
-

PKPAS
-

PKUNPAK
-

QUARK

ARC

Archive

SQUASH

ARD

Map

Holux

-

Alan

ARF

Automatic Response File


ARH

Archivers definitions file

DN

ARI

Archive

ARI

ARJ

Archive

ARJ

-

ARJZ

ARK

ARC archive

CP/M

port of ARC file archiver

ARK

Archive

QUARK

ARK

Managing your Money Archive File


ARR

Arrangement

Atari Cubase

ART

Gerber artwork

Cadence

Allegro

ART

First Publisher, Designworks, Greenstreet
Draw graphic file

All GST/Greenstreet Draw
products

ART

Graphics (scrapbook)

Art Import

ART

Graphics format (Another Ray Tracer)

PFS:1st publisher
-

Art Import

ARTX

file format

Artisteer

ARTX

file format

belightsoft Text Art

ARX

Archive

ARX

ASC

ASCII

text file


ASC

Transport armor file

PGP

ASD

Autosave

file

Microsoft Word

ASD

Presentation

Astound

ASD

Screen driver

Lotus 1
-
2
-
3

ASD

Spectral Data Set

ASD Inc. RS3 spectral acquisition
program

ASE

Velvet Studio Sample

AWAVE

ASE

ASCII Scene Export

3D Studio

ASF

Datafile

STATGRAPHICS

ASF

Screen font

Lotus 1
-
2
-
3

ASF

Advanced Streaming Format (Compressed
Windows audio/video)

Microsoft Corporation

ASK

SYSGEN answer file

RT
-
11

ASH

Assembly language

header file

TASM 3.0

ASI

ASIC language source

ASIC

ASI

Assembler include file

Turbo C

-

Borland C++

ASM

Assembler language source

TASM
,
MASM
,
NASM
,
Yasm
,
FASM

ASMX

ASP.NET

Web Se
rvice

Microsoft Corporation

ASO

Assembler object (object
-
oriented) file

Turbo Assembler

ASP

ASPECT source code file

Procomm Plus

ASP

Association of Shareware Professionals
OMBUDSMN.ASP notice


ASP

Active Server Pages of Microsoft.Net

Microsoft
Corporation

ASPX

ActiveX Server Pages of Microsoft.Net

Microsoft Corporation

ASS

Amalgam Scene Specification

Halo 2 Map Editor

ASS

Advanced SubStation Alpha (Subtitles)


AST

Adobe Color Separation table for
PhotoShop

PhotoShop

ASV

Autosave File

MATLAB

ASW

Authorware Star

Authorware

ASX

Advanced Stream Redirector file, redirects
to an ASF file (see ASF)

Microsoft Corporation

ASZ

Skin

AltDesk

AT2

Auto template

Aldus Persuasion 2.0

AT3

Atrac 3 Sound/music file

All Sony devices and programs with the
Atrac 3+
specification

ATM

Adobe Type Manager data/info


ATN

Adobe Photoshop action

Adobe Photoshop

ATT

AT&T Group

GCGW

ATY

Produced when an association type is
exported by 3D Topicscape

3D Topicscape

AU

Sun/NeXT/DEC Audio file

AWAVE, GoldWave

AU

Sound (audio) file

Sun Microsystems

-

Convert (c) Villena

AUD

Audio file

AudioRack

AUP

Audacity project file

Audacity

AUX

Auxiliary dictionary

ChiWriter

AUX

Auxiliary references

TeX
/
LaTeX

AUZ

Ableton Live File

Authorization File for
Ableton Live

AVA

Publication

Avagio

AVB

AntiViral Toolkit Pro Bases


AVI

Audio Video Interleaved animation file

Video for Windows

AVR

Audio Visual Research

AWAVE

AVS

Audio Video Software

AVS Video Editor

(video editing
software)

AVT

AVATAR
-
coding files

A3E

AW

Text file

HP AdvanceWrite

AWA

Animations Works Accelerated Movie

Animation Works

AWD

Microsoft Fax At Work Document

Microsoft Fax At Work

AWK

AWK script/program


AWM

Animations Works Movie (as .AVI)

Animation Works

AWS

Data

STATGRAPHICS

Ax

Directshow

filter file format


AXF

ARM Executable Image

generated by the
ARM tools.


AXM

Axmedis

object

Axmedis

Tools

AZD

Amazon Software Download

Amazon Software Download

AZW

DRM enabled eBook

All models of
Amazon Kindle

AZW1

DRM enabled eBook with embedded fonts

All models
Amazon Kindle

AZW2

Program file

All models of
Amazon Kindle

excluding
Kindle 1

AZZ

Data file

AZZ Cardfile

[
edit
] B

Ext.

Description

Used by

B&W

Black and white graphics file

atari
-

mac

B&W

Mono binary screen image

1st Reader

B

Batch list

APPLAUSE

B

Grand Theft Auto

saved game

Any of the 3D
Grand Theft Auto

games in either III or IV era.

B_W

Black and white graphics file

Atari

-

mac

B1N

Both mono and color binary screen image

1st Reader

B30

Printer font (JLaser
-

Cordata)

Corel Ventura

Publisher

B8

Raw graphics file (one byte per pixel) plane two

PicLab

BA

Binary Archive

Scifer Archiver and Compression
[External Header Mode]

BAC

Compiled BASIC

RT
-
11

BASIC
-
11

BAD

Bad file

Oracle Corp
oration

-

many

BAD

File which covers bad blocks on disk volume
(not to be moved)

RT
-
11

BAK

Backup file


BAL

Music score

Ballade

BALANCE

Balance accounting sheet file

Balance

BAP

Blaze Audio Wave
Information File

BlazeAudio
MadCap Software

BAR

Horizontal bar menu object file

dBASE

Application Generator

BAR

Info Bar for
GFX2EXE

GFX2EXE

BAR

Broker Archive. Compressed file containing
number of other files for deployment.
[1]

IBM WebSphere Message Broker

BAS

BASIC

language source

QuickBASIC

-

GW
-
BASIC

-

FreeBASIC

BAT

Batch file

MS
-
DOS
,
RT
-
11

BB

Database backup

Papyrus Design Group

BBL

Bibliographic reference file

TeX/BibTeX

BBM

Brush

Deluxe Paint

BBP

Playlist

BassBox

BBS

Bulletin Board System announce or text info file


BBS

Hudson
-
style messagebase

FTN software

BC!

Unfinished download

Unfinished BitComet download (a
BitTorrent client)

BCF

Card data

Bingo Card Creator

BCH

Batch process object
file

dBASE

Application Generator

BCH

Datafile

Datalex EntryPoint 90

BCO

Outline font description

Bitstream Inc.

BCP

Borland

C++ makefile


BCT

Backup dictionary

Clarion

BCW

Environment settings

Borland C++

4.5

BDB

Bookends database

Bookends

BDC

Dictionary

Lingvo

BDEF

Builder Definition

Websphere Portlet Factory

BDF

Adobe Glyph Bitmap Distribut
ion Format

Adobe Software

BDF

Binary update file

BUPDATE.EXE (c) TNT Techn.

BDF

Bitmap Distribution Format font file

X11

BDF

Datafile

Egret

BDM

Videoclip

AVCHD

BDMV

BluRay Video Data Content file

Media players / software that
supports BluRay structure

BDR

Border

Microsoft Publisher

BDT

Dictionary

Lingvo

BEF

Bleck Encrypted File


BEZ

Outline font description

Bitstream

BF

Brainfuck

sourcefile


BF2

Bradford 2 font


BFC

Briefcase

Win95

Win95

BFM

Font metrics

unix/Frame

BFX

Fax

BitFax

BGA

Bitmap graphics


BGI

Borland Graphics Interface device driver

Turbo C

-

Turbo Pascal

BH

Blackhole

data compression format

BI

BASIC

include file

Visual Basic

-

FreeBASIC

BIB

Bibliography (ASCII)


BIB

Database
-

not
compatible with TeX format

Papyrus

BIB

Literature database

TeX/
BibTeX

BIF

Binary Image Forma
t b&w graphics file

Image Capture board

BIK

Bink video file (RAD Video)


BIN

Binary file, usually zero
-
start (.com analog)


BIN

SGI Powerflip


BIN

Text mode memory dump

The Draw

-

TUD
-

ACiDDraw

-

etc.

BIO

BioniX Wallpaper playlist f
ile

BioniX Wallpaper Changer

BIO

OS/2

BIOS


BIT

Bitmap X11


BK!

Document backup

WordPerfect

for Win

BK

Faxbook

JetFax

BK?

Backup file


BKn

Timed backup file for document window n

WordPerfect for Win

BKP

Backup file

Write
-

TurboVidion
DialogDesigner

BKW

Mirror image of font set

FontEdit

BLD

BLoaDable picture

BASIC

BLD

SYSGEN Build procedure file

RT
-
11

BLEND

Blender3D

Project File

Blender

BLG

Backup Log

ARCSOLO

BLK

Temporary file

WordPerfect

for Win

BLP

Blizzard Game Picture

Blizzard Entertainment games
(various)

BM

BitMap graphics file


BM3

UIQ3

Phone backup


BMK

Help Bookmarks

Windows
3.x

BMP

OS/2

or Win graphics format (BitMap Picture)

QPeg
-

CorelDraw
-

PC
Paintbrush
-

many

BMPW

bitmap
world
-
file
-

geo
-
references info


BMT

Ami Pro Button

Ami Pro

BNA

Data

Atlas Boundary

BNK

Adlib instrument bank file


BNR

Graphics Banner

Banner
-

Poster

BOK

Shamela Library

book

Shamela Library

Program

BOO

Book
-
format

READIBM

BOO

Compressed file ASCII archive created by BOO
(msbooasm.arc)

msboo
asm.arc

BOO

Boo programming language source file.

Boo Programming Language

BOT

Bot

files, these go with JKB files

Quake 3 Engine

BPC

Chart

Business Plan Toolkit

BPOLY

Data

Prisms binary 3D object

BPP

Backup application

Clarion

BPT

Bitmap fills file

CorelDRAW

BR

Script

Bridge

BRD

Eagle Layout File


BRD

Tanzzle board file

Tanzzle

BRD

Cadence Allegro board file

Cadence

BRF

Braille

Braille embossers and

refreshable
displays

BRK

Fax

Brooktrout Fax
-
Mail

BRK

The Brake! Mailer REXX script

The Brake!

BRL

CAD

Ballistic Research Laboratory
CAD

BS2

Archive

BS2.EXE

BSA

Archive

BSArc

BSC

Compressed Apple II file archive created by
BINSCII

BINSCII

BSC

Database

Source Browser

BSC

Pwbrmake object file

Microsoft Fortran

BSP

Half
-
Life
\
Half
-
Life 2 map files

Valve Corporation

BSS

Casio Phone base

PC
-
LINK

BST

BiblioTex file (BiblioTex=bibliography file)

TeX

BSY

Busy flag

FTN soft

BTM

Batch
-
to
-
memory (quick batch)

4dos
-
ndos

BTN

Makeover Button file


BUFR

Binary Universal Form for the Representation of
Meteorological Data


BUG

Bugs and Problems


BUN

LucasArts

Bundle File


BUP

Backup file


BUT

Button definitions

Buttons!

BUY

Datafile format

movie

BVn

Overflow file below insert point in Doc n

WordPerfect for Win

BWB

Spreadsheet application

Visual Baler

BWR

Beware (buglist)

Kermit

BYU

BYU Movie

BYU

BZ2

Archive

bzip2

BZM

Map

Blitzkrieg

[
edit
] C

Ext.

Description

Used by

C
--

C

language source

Sphinx C
--

C

C language

source

Note that on case sensitive platforms like Unix
and with the gcc compiler the uppercase .C
extension indicates a C++ source file.

Watcom C/C
++, Borland
C/C++, gcc and other C
compilers

C

Unix file archive

COMPACT

C++

C++

language source


C00

Print file

Ventura Publisher

C01

Typhoon wave files

AWAVE

C86

C source code file

Computer
Innovation C86

CA

Initial cache data for root domain servers

Telnet

CA?

Borland

packed and split file

Borland Installer

CAB

Win 95 packed file

Win 95

CAC

dBASE IV executable when caching on/off
(see
cachedb.bat)


CAD

Drawing

BobCAD
-
CAM

CAD

Document

Drafix Windows CAD

CAL

Calendar file

Windows 3.x

CAL

Spreadsheet format

SuperCalc

CALS

Computer Aided Acquisition and Logistics


CALS

Support Raster Format


CAM

Casio

Camera


CAN

Fax

Navigator Fax

CAP

Caption

Ventura Publisher

CAP

Capture file

ProComm
-

Telix

CAS

C + ASM language source

Turbo C

CAT

Catalog

CP Backup
-

dBASE IV

CAT

Device driver
digital signature

Microsoft Windows

CAT

Stellarium Star Catalogue

Stellarium

CATDrawing

Drawing file of CATIA V5

CATIA V5

CATPart

Part file of CATIA V5

CATIA V5

CATProduct

Assembly file of CATIA V5

CATIA V5

CATS

Combined source

ATS

CBA

Source code

Creative BASIC

CBC

Fuzzy logic system

CubiCalc

CBL

COBOL

source code file


CBM

Compiled bitmap graphics

XLib

CBR

Comic Book

Reader (RAR file)

CDisplay

and similar

CBS

MasterWord button bar configuration file


CBT

Computer Based Training

many

CBZ

Comic Book Reader (ZIP file)

CDisplay

and similar

CC

C++

source code file


CC

CC language source

CC

CCC

Bitmap graphics (native format)

Curtain Call

CCF

Communications
configuration file

Symphony

CCH

Chart

CorelChart

CCITT

CCITT

Group 3 and Group 4 Encoding


CCL

Communication Command Language file

Intalk

CCO

BTX Graphics file

XBTX

CCT

Print Template

BobCAD
-
CAM

CD

CD description

DN

CDA

CD
-
Audio

Win95

CDB

Card database

CardScan

CDB

Main database

TCU Turbo C Utilities

CDF

Common Data Format


CDF

Company Data File

Nominal Small Business
Accounting software

CDF

Cyberspace Description Format


CDF

Graphics

netcdf

CDK

Document

Atari Calamus

CDL

CADKey CADL Language

CADKey

CDM

Disk Drivers NPA

Novell

NetWare

CDM

Music format (compressed)


CDR

Vector graphics format (drawing)

CorelDraw
!

CDT

Corel Draw Template File

CorelDraw!

CDX

Compound index file

Visual FoxPro
, Advantage
Database Server

CE

Computer Eyes

Conversion Artist

CE

Main.ce

The FarSide Computer
Calendar

CEB

Cont. Edge Bitmap

Conversion Artist

CEF

CA
-
Clipper Workbench Application

CA Clipper

CEF

Export File


CEF

Compact Embedded Font

Adobe Illustrator

CEG

Bitmap graphics

Tempra Show
-

Edsun
Continuous Edge Graphics

CEL

Animation
CEL

3D Studio

CEL

Graphics

Autodesk Animator

-

Lumena

CF

Configuration file

imake

CFA

Audio file

Adobe Premiere Pro

CFG

Configuration file


CFC

ColdFusion

Component

Adobe ColdFusion

CFG

Configuration file


CFL

Chart

CorelFLOW

CFM

ColdFusion

Markup Language

Adobe ColdFusion

CFN

Font
data

Atari

Calamus

CFO

C Form Object internal format object file

TCU Turbo C Utilities

CFP

Fax

The Complete Fax Portable

CFT

CFast graphics file

Disney Animation Studio

CGA

CGA display font

Ventura Publisher

CGI

Common Gateway Interface

script


CGM

Computer Graphics Metafile

vector graphics

A&L
-

HG
-

many

CH

Clipper language header

CA Clipper

CH3

Chart

Harvard
Graphics

3.0

CH4

Presentation

Charisma 4.0

CHD

Font descriptor

FontChameleon

CHI

ChiWriter

Document

ChiWriter
-

Chiview

CHK

Recovered data

DOS
CH
KDSK

CHK

Temporary file

WordPerfect for Win

CHL

Configuration History Log


CHM

Compiled Help File

Microsoft Windows
,
Help
Explorer Viewer

CHML

Encrypted Data File

Krasbit Technologies
,
Chameleon Imaging
Workflow Software

CHN

Data

Ethnograph 3

CHP

Chapter file

Ventura
Publisher

CHR

Character set

Turbo C

-

Turbo Pascal

CHT

Chart

Harvard Graphics 2.0
-

SoftCraft Presenter

CHT

CHeaT in any program/game

many

CHT

Interface file for ChartMaster

dBASE

CHZ

Archive

CHARC

CIF

Caltech Intermediate Format graphics file


CIF

Chapter information

Ventura Publisher

CIF

Crystallographic Info
rmation File

RasMol
,
Jmol

CiM

C Text Mode Image File

The Ultimate Draw

CIX

Database index

TCU Turbo C Utilities

CKB

Borland C++

4.x editor keystroke mapping

BCW.EXE

CL

COMMON LISP source code file


CLA

Source

Clarion

CLASS

Java class file

Java

CLD

Clipper debugger configuration file

CA Clipper

CLJ

Clojure source code

Clojure

CLP

Clip art graphics file

Quattro
Pro

CLP

Clipboard file

Windows 3.x

CLP

Compiler response file

CA Clipper

CLP

Graphics format

PCPAINT/Pictor

CLPI

ClipAV Clip Information file for BluRay

Media hardware / software
with BluRay structure
support

CLR

Color binary screen image

1st Reader

CLR

Color definitions

Photostyler

CLR

Color scheme

Boxer/2

CLR

Palette file for GIS format


CLS

C++ class definition file


CLW

MFC Class Wizard information

Microsoft VC++

CM

Data file

CraftMan

CMB

Xtree for Windows Button Bar file


CMD

Command

dBASE

-

Waffle

CMD

Command Prompt

batch file

Microsoft Windows NT
based operating systems

CMD

executable programs

CP/M
-
86 operating system

CMD

External command menu

1st Reader

CMD

OS/2

batch/
REXX

file

OS/2

CMF

FM
-
music file (Creative Music File)


CMK

Card

Card Shop Plus

CMM

CMM script (batch) file

CEnvi

CMP

Bitmap graphics (Lead CMP compression)


CMP

Compressed data

PKWare Inc. data
compression library

CMP

Header file for PostScript printer files

CorelDRAW

CMP

Photofinish Calibration Map

Photofinish

CMP

User dictionary

Microsoft Word

for DOS

CMRL

Concise message routing
language

DOTGO

CMS

Content Management System

Any Web Browser

CMU

Carnegie Mellon University Formats


CMV

Animation (CorelMove
CorelDraw 4.0)

CorelMove CorelDraw 4.0

CNC

CNC general program data


CND

System generation conditional file

RT
-
11

CNF

Configuration (program
-

printer setup)

program
-

printer setup

CNF

Configuration
file


CNV

Temporary file

WordPerfect

for Win

CNV

Winword DLL used as part of an import
operation (CNV=converter)

Microsoft Word

CO

Cobalt
-

parametric drafting and 3D modeling

Ashlar
-
Vellum

COB

Calgari trueSpace2

File Format


COB

COBOL

source code file


COD

Code definition table

UUPC

COD

Datafile

Forecast Plus
-

Microsoft
Multiplan

-

StatPac Gold

COD

file uncluding CODES for any program/game

many

COD

Printer code
definition file

Boxer/2

COD

Program compiled code

FORTRAN

COD

Template source file

dBASE Application
Generator

COD

Videotext file


COE

Coefficient file

Xilinx ISE

COF

Animation Control File

Diablo II

COL

Color palette

Autodesk Animator
-

many

COL

Spreadsheet

Microsoft Multiplan

COM

Command (memory image of executable
program)

DOS

COM

Indirect command file (sequence of commands
to be executed)

RT
-
11

CON

Configuration file

Simdir

CON

MSTS Consist file

MSTS

CPC

Compressed image

Cartesian Perceptual
Compression

CPD

Script

Complaints
Desk

CPF

Fax

The Complete Fax

CPI

ColorLab Processed Image bitmapped graphics
file


CPI

MS
-
DOS codepage file

MODE.EXE

CPL

Control panel file

Windows 3.x

CPL

Presentation

Compel

CPMZ

ConPro/Miradi Zipfile

Miradi and ConPro

CPP

C++

language source

Watcom C/C++

CPP

Presentation

CA
-
Cricket Presents

CPR

Knowledge Access

GCGW

CPS

backup of startup files by QEMM (?)
autoexec.cps


CPT

Encrypted memo file

dBASE

CPT

Mac file archive

COMPACT PRO

CPT

Template

CA
-
Cricket Presents

CPZ

Music text file

COMPOZ

CR2

Raw image format

Canon

digital cameras

CRA

Advanced crack file (usually text)


CRD

Cardfile

Windows 3.x
-

YourWay

CRD

Map

Holux
-

Alan

CRD

Molecular coordinates

CHARMM
,
RasMol

CRDOWNLOAD

Google Chrome download in progress

Google Chrome

CRF

Cross
-
reference

Microsoft MASM
-

Zortech
C++,
RT
-
11

CREF

CRK

Crack file (usually text)


CRP

Encrypted database

dBASE IV

CRS

File Conversion Resource

WordPerfect

5.1

CRT

Terminal settings
information

Oracle

CRU

Compressed file archive created by CRUSH


CS

C# source file

C#

CSD

Compact Shared Document

Dream To Reality

CSG

Batch file (Submit)

ISIS/w

CSG

Graph

Statistica/w

CSM

Borland C++ 4.x precompiled header file

BCW.EXE

CSP

PC Emcee Screen Image file

Computer Support
Corporation

CSS

Datafile

CSS
-

Stats+

CSS

Datasheet

Statistica/w

CSS

cascading style sheet


CSV

Adjusted
EGA
/
VGA

palette

CompuShow

CSV

Comma Separated
Values text file format
(ASCII)


CTC

Control file

PC Installer

CTF

Character code translation file

Symphony

CTK

CommonTime

Key file

CommonTime

software
applications

CTL

Control file

dBASE IV
-

Aldus Setup

CTL

BATCH control file (generated by BATCH

from .BAT file)

RT
-
11

CTT

BATCH Temporary file

RT
-
11

CTX

Ciphertext file

Pretty Good
Privacy

RSA

System

CTX

Course TeXt file

some Microsoft online
guides

CTX

document

Creativyst Table eXchange

CUF

C Utilities Form definition

TCU Turbo C Utilities

CUR

Windows resource (cursor image file)

Resource Workshop
-

WRT
-

Watcom Resource Editor

CUT

Graphics format (bitmapped graphics)

dr. Halo

CV4

Color file

CodeView

CVP

Cover page

WinFax

CVS

Graphics

Canvas

CVT

Backup file for CONVERTed database file

dBASE IV

CVW

Color file

CodeView

CWEB

C
Web


CWK

Datafile

ClarisWorks, Appleworks

CXX

C++ source code file

Zortech C++

[
edit
] D

Ext.

Description

Used by

D

D Programming Language

source file

DMD

D3V

Video file

Nintendo DS

(with ARME,
MMCF etc.)

D4D

Data

Dra
w 4D object

D4P

Data

Draw 4D Pro object

D64

Commodore 64

disk image


D88

Toshiba Pasopeia D88 disk image format

A series of emulators of
Japanese computers

DAA

Direct Access Archive


DAF

Data file

Digital Anchor

DAT

Maxum chromatograph chromatogram

Siemens Maxum
Chromatograph

DAT

LDraw (Sub)Part File, 3D Model

LDraw

DAT

Document

Microsoft Word Format (old)

DAT

data

RSNetWorx Project

DAT

Data file in special format or
ASCII


DAT

Database file

Clarion (programming
language)

DAT

Optical disc image (can be ISO9660, but not
cdrdao
,
burnatonce

restricted to)

DAT

Video CD

MPEG

stream


DATS

Dynamic source

ATS

DB$

Temperature debug info

Clarion Modula
-
2

DB$

Temporary file

dBASE

DB

Database file

Paradox
-

XTreeGold
-

dbvista

DB

Configuration

dBASE IV
-

dBFast

DB

Multi Edit config

ME

DB2

Database

dBASE II

DB3

Database

dBASE III

DBA

Database file

Turbo
Prolog

-

DataEase

DBA

DarkBasic source code


DBC

DataBaseContainer

Visual FoxPro

DBD

Business data

Business Insight

DBD

Debug info

Clarion
Modula
-
2

DBF

Database file

dBASE

III/IV
-

Visual
FoxPro

-

dBFast
-

DataBoss
-

DBVista
-

CA
-
Clipper

-

Visual Objects

-

Alaska
Xbase++
-


Advantage Database Server

DBG

Debugger script

DOS debug
-

Watcom
debugger

DBG

Symbolic debugging information

Microsoft
C/C++

DBK

Database backup

dBASE IV

DBL

DIBOL source file


DBM

Datafile

DataEase

DBM

Menu template

DataBoss

DBO

Compiled program

dBASE IV

DBPro

DarkBasicPro Project


DBS

Data file used by Managing Your Money


DBS

Database in SQL Windows format


DBS

Datafile

PRODAS

DBS

Printer description file

Microsoft Word
,
Microsoft
Works

DBT

FoxBASE+ style memo

FoxPro 2.x

DBT

Memo file for
database w/same name

dBASE IV
-

dBFast

DBW

Windows file

DataBoss

DBX

DataBeam

GCGW

DBX

AutoCAD Database

AutoCAD

DBX

Archive File

Outlook Express

DC

CAD drawing file

DesignCAD 3000 for
Windows

DC6

Image file

Diablo II

DCA

Document Content
Architecture text file

IBM DisplayWrite

DCC

Animation

Diablo II

DCD

CAD Drawing File

DesignCAD 3DMax for
Windows

DCF

floppy disk image

Disk Copy Fast

DCH

Schematic Drawing file

DipTrace

Schematic Capture

DCI

Dreamcast Save File

Dreamcast

DCL

Delphi
Control Library

Borland Delphi

DCM

DCM music module

AWAVE

DCP

OS/2 device code page

OS/2

DCS

Bitmap graphics (CYMK format)

QuarkXPress

DCS

Datafile

ACT! Activity Files

DCT

Dictionary: used by many programs with program
dependent format

Clarion

DCT

Spell checking dictionary

Harvard Graphics 3.0

-

Symphony

DCT

DataBaseContainer Extension

Visual FoxPro

DCU

Delphi unit (compiled)

Borland Delphi

DCW

Walter Machine Programing

Walter Profile Editor

DCX

Multi
-
page PCX graphics (common fax format)

Intel
-

SpectraFAX

DCX

DataBaseCont
ainer Index

Visual FoxPro

DD

Macintosh file archive

DISKDOUBLER

DDA

Data

GLBasic ASCII 3D object

DDB

Bitmap graphics


DDB

Digidesign Database File

Digidesign

ProTools

DDI

Disk image

DiskDupe

DDP

Device Driver Profile file

OS/2

DDS

DirectDraw Surface

file

Microsoft Flight Simulator,
other Microsoft programs

DEB

DEBUG script

DOS Debug

DEF

Assembly header file

Geoworks

DEF

Defaults
-

definitions


DEF

Linker definition file

TLink
-

WLink...

DEM

Demonstration


DEM

Digital Elevation Model


DEM

Graphics file

VistaPro

DEM

Vista DEM file

Meta.exe VP3

DES

Ascii text parameter description

AWAVE

DESKLINK

Windows Explorer Desktop Control (commonly
"Desktop (create shortcut).DESKLINK", 0 bytes).
Uses a 'special' hidden file extension
(NeverShowExt flag inside the
Registry
), o
verriding
the
Windows Explorer

option of showing/hiding file
extensions.


desktop

Desktop Entry

freedesktop.org

DEV

Device driver


DEV

SYSGEN handler build procedure

RT
-
11

DEV

Dev
-
C++ project file

Dev
-
C++

DFD

Data Flow Diagram graphic file

Prosa

DFF

RenderWare

model data (e.g.
Grand Theft Auto III

and later)


DFI

Outline font description

Digifont

DFL

Default program settings

Signature

DFM

Data Flow Diagram model file

Prosa

DFM

Delphi form
module

Borland Delphi

DFS

Delight Sound File


DFV

Printing form (Word)

Microsoft Word

DFX

Micrografx Effects DLL


DGN

Graphics file

MicroStation

DGS

Diagnostics


DH

Dependency information for .ph

Geoworks

DHP

Dr. Halo PIC Format graphics file

Dr. Halo II
-

III

DHT

Datafile

Gauss

DI

D Programming Language

interface file

DMD

DIA

Diagraph graphics file

Computer Support
Corporation

DIB

Device Independent Bitmap

rarely used Windows 3.0
bitmap; Win
-

OS/2

DIC

Dictionary (e.g. from WinWord)


DIF

Borland patch data file

Borland patch

DIF

Data Interchange Format

Visicalc

DIF

OS/2 V2.2 Display Information File

OS/2

DIF

Output from Diff command
-

script for Patch

command

DIF

SRCCOM, BINCOM output file

RT
-
11

DIG

Digilink

AWAVE

DIG

Sound Designer 1 audio file

AWAVE

DIP

Graphics


DIP

Watcom debug info processor

WatcomDebugger

DIP

PCB Drawing file

DipTrace

PCB Layout

DIR

Dialing directory file

Procomm Plus

DIR

Directory file

VAX
-

CPS Backup

DIR

Movie

MacroMind Director 4.x

DIR

Directory listing file

RT
-
11

DIS

Distribution file

VAX Mail

DIS

Thesaurus

CorelDraw

DIZ

Description file (Description In Zip)


DJVU

DJVU Document Format, a format similar to PDF
but with higher
compression rates at the same
quality.

DJVU

DKB

Raytraced graphics

DKBTrace

DL

Animation format (Italian origin)

Display
-

DL Viewer

DLD


Lotus 1
-
2
-
3

DLF

Dialogue Live Format

Produced by Exstream
Dialogue and edited by
Dialogue Live Editor

DLG

Dialog resource script file

Microsoft Windows SDK

DLG

Dialog resources

DN

DLG

Windows SDK dialog editor data file


DLG

Windows SDK dialog editor
data file


DLL

Dynamic
-
link library

Windows 3.x
-

OS/2

DLL

Export/import filter

CorelDRAW

DLM

Microsoft File Transfer Manager

Microsoft File Transfer
Manager

DLP

Data

DAQLab

DLS

Setup

Norton Disklock

DMF

Music format (Delusion Digital Music File)

Delusion

DMG

Apple Disk Image

Mac OS X

(
Disk Utility
),

DMO

Demo

Derive

DMP

Dump file (e.g. screen or memory)


DMP

DUMP utility output file

RT
-
11

DMS

Amiga file archive

DISKMASHER

DNG

Digital Negative (DNG)
, a publicly available
archival format for the raw files generated by digital
cameras.

At least 30 camera models
from at lea
st 10
manufacturers, and at least
200 software products.

DNT

data

RSNetWorx Project

DO

Java

servlet file

Web browser (Various)

DOC

A Document,

or an ASCII text file with text
formatting codes in with the text. This generic
extension is used by many word processors.

Microsoft Word

and others

DOCM

Microsoft Word 2007 Master document

Micr
osoft Word 2007

DOCX

Office Open XML

Text document

Microsoft Word

DOF

Delphi project options file

Borland Delphi

DOG

Screen file

Laughing Dog Screen Maker

DOH

Dependency information for .poh

Geoworks

DOR

Roland Digital audio file

Roland

DOS

External command file

1st Reade
r

DOS

Network driver (e.g. pkt_dis.dos)


DOS

OS/2 V3 SVGA PMI
-
File

Svga.exe

DOS

System file for 'pure' MS
-
DOS usage (e.g.
MSDOS.DOS, AUTOEXEC.DOS; alternate
versions of MSDOS.SYS and AUTOEXEC.BAT
respectively)

Windows 95
,
98

DOS

Text file containing DOS specific info


DOT

Line
-
type definition file

CorelDRAW

DOT

Microsoft Word document
template

Microsoft Word

DOTX

Office Open XML

Text document template

Micros
oft Word

DOX

Text file

MultiMate 4.0

DOZ

Description Out of Zip

VENDINFO

DP

Calendar file

Daily Planner

DP

Data file

DataPhile

DPR

Default project
-

and state
-
related information

Borland C++
-

Delphi
-

C

DPX

Digital Moving Picture Exchange


DRP

Web3D

File

Web3D

DRS

Display Resource

WordPerfect for Win

DRV

Driver


DRW

Designer vector graphics file

Designer
-

MicroGraphix

DS

TWAIN Data Source

Any twain
-
source must
supply one xxx.ds file

DS1

Map file

Diablo II

DS4

Vector graphics

Micrografx
Designer 4.x

DSC

Celestia Deep Space Catalog file

Celestia

DSC

Description file


DSC

Discard file

Oracle

DSD

Database

DataShaper

DSF

Data Storage Format

Golden Helix

DSF

Delusion Digital Sound
File

Delusion

DSK

Desktop configuration

BP
-

DN
-

BC++
-

TP

DSK

Disk Drivers

Novell NetWare

DSK

Logical disk file

RT
-
11

DSM

Digital Sound Module

DSI

DSN

Design

Object System Designer

DSP

Display
parameters

Signature

DSP

Dynamic Studio Professional Module

Dynamic Studio

DSP

Graphics display driver

Dr. Halo

DSP

Norton viewer DLL

Win

DSR

Driver Resource

WordPerfect for Win

DSS

Screensaver file

DCC

DSS

Digital Speech Standard (Sound)

Digital
Soup

DSS

SQL Script for .Time Framework

Exaktime

DST

WAIN (Scanner spec) data source DLL

Win

DSW

Borland C++ 4.x desktop layout file

BCW.EXE

DSY

DAISY container file

ADAKTA.EXE

DT1

Tile file

Diablo II

DT2

msn
-
emoticon

paint

DT_

Data fork of a
Macintosh file

Mac
-
ette

DTA

Data file

Turbo Pascal
-

PC
-
File
-

Stata

DTB

Database Backup for .Time Framework

Exaktime

DTF

Database file

PFS
-

Q&A

DTL

Django template language

djangoproject

DTM

DigiTrekker music module

AWAVE

DTO

data

Directory Toolkit

output

DTP

Desk Top Publishing Document

Timeworks / greenstreet
Publisher3/ Greenstreet
Publisher 4.5

DTP

Page Magic 2.0 publication

Page Magic 2.0 upgrades to
Greenstreet Publisher

DTP

Publication

Publish
-
It! upgrades to
Greenstreet Publisher

DVC

Data

Lotus 1
-
2
-
3

DVDPROJ

iDVD project file

iDVD (Apple iLife '08)

DVI

DeVice Independent document

TeX

DVP

DESQView run
-
file

DESQView

DVP

Device parameter file

AutoCAD

DW2

Drawing

DesignCAD for DOS, &
DesignCAD for Windows

DWB

Coryphaeus Software
Designers Workbench

CSD

DWC

Archive

DWC

DWD

DiamondWare Digitized file

AWAVE

DWG

Drawing

AutoCAD
,
IntelliCAD
,
PowerCAD, Drafix, etc.

DX

Text file

DEC WPS/DX format
-

DEC
WPS Plus

DXF

Dialogue Exchange Format

Exstream Dialogue

DXF

Drawing

Interchange File Format vector graphics

AutoCAD, IntelliCAD,
PowerCAD, etc.

DXN

Fax

Fujitsu dexNET

DXP

SpotFire data

TIBCO

Spotfire

DXP

ISO creation project file

CD Burner XP Pro

DYLIB

Dynamic Library

Mac OS
-
X

DYN

Data

Lotus 1
-
2
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[
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] E

Ext.

Description

Used by

E

E language source code

E

E2D

2
-
dimensional vector graphics file

Editor included in
JFire

EAS

Extended file attributes

OS/2

EAR

Enterprise archive

archive

EBA

Source code

Emergence BASIC

EBJ

Error
-
checking object file

Geoworks

EBQ

CITE standard electronic BQ exchange file


EC

Error
checking preprosessed Goc source
code

Geoworks

EC

Source code

Ecere SDK

ECC

Error
-
checking file

dvdisaster

ECE

Escenic Contentng Engine dynamic page

Escenic

ECMS

Status document

ECMerge

ECMT

Template document / Session

ECMerge

ED5

EDMICS

GCGW

EDA

Ensoniq ASR disk image

AWAVE

EDE

Ensoniq EPS

disk image

AWAVE

EDF

European data format

Medical timeseries storage files

EDF

Macrocom Online Kitchen
-
planer


EDK

Ensoniq KT disk image

AWAVE

EDL

EDL

Premiere

EDQ

Ensoniq sq1,2/ks32 disk image

AWAVE

EDS

Ensoniq SQ80 disk image

AWAVE

EDT

Default settings

VAX Edt editor

EDT

Ensoniq TS disk image

AWAVE

EDT

External editors definitions

DN

EDV

Ensoniq VFX
-
SD disk image

AWAVE

EEB

Button bar for Equation Editor

WordPerfect for Win

EFA

Ensoniq ASR file

AWAVE

EFA

Encrypted File Archive


EFE

Ensoniq EPS file

AWAVE

EFE

Ensoniq EPS instrument file

AWAVE

EFK

Ensoniq KT file

AWAVE

EFQ

Ensoniq SQ1/SQ2/KS32 file

AWAVE

EFS

Ensoniq SQ80 file

AWAVE

EFT

Ensoniq TS
file

AWAVE

EFT

High resolution screen font

ChiWriter

EFV

Ensoniq VFX
-
SD file

AWAVE

EFX

Fax

Everex EFax

EGA

EGA display font

Ventura Publisher

EKA

Internal data files

Borland's Eureka

EL

ELISP source code file

Emacs lisp

ELB

Synergy/DE library


ELC

Compiled ELISP code

Emacs lisp

ELI

Archive

ELI

ELT

Event list text file

Prosa

EMAKER

E language source code (maker)

E

EMD

ABT Extended MoDule

AWAVE

EMF

Microsoft Enhanced Metafile


EML

Stationery Template

Outlook Express

EMU

Terminal emulation data

BITCOM

ENC

Encoded file
-

UUENCODEd file

Lotus 1
-
2
-
3
-

uuexe515.exe

ENC

Music

Encore

END

Arrow
-
head definition file

CorelDRAW

ENFF

Extended Neutral File Format


ENG

Dictionary engine

Sprint

ENG

English documentation


ENG

Graphics file (charting)

EnerGraphics

ENV

Envelope or Environments


ENV

Enveloper macro

WOPR

ENV

Environment file

WordPerfect for Win

EPD

Publication

Express Publisher

EPI

Document

Express Publisher

EPI

Encapsulated PostScript graphic file


EPS

Encapsulated PostScript (Graphics format)

CorelDraw
-

PhotoStyler
-

PMView
-

Adobe Illustrator
-

Ventua Publisher

EQN

Equation filE

WordPerfect for Win

ERD

Entity Relationship Diagram graphic file

Prosa

ERL

Erlang

source code file


ERM

Entity Relationship Diagram model file

Prosa

ERR

Compiler/linker error report


ESH

Extended Shell batch file


ETH

Document

Ethnograph 3

ETF

Encrypted Text File. Used in some security
programs.


ETW

Proprietary format from EnterTech for the
MagicSing/Mic Karaoke product line.

Enter
-
Tech

ETX

Structure
-
enhanced text for some ascii text
browsers


EUI

Ensoniq EPS family CD image

AWAVE

EVT

Events descriptions


EVY

Document

WordPerfect Envoy

EWD

Document

Express Publisher for Windows

EX3

Device driveR

Harvard Graphics 3.0

EXC

Exclude file for Optimize (do not process)
(QEMM)

QEMM

EXC

REXX source code file

VM/CMS

EXE

Directly executable program

DOS

EXF

Excute file

OnHand PC

EXM

MSDOS executable, system
-
manager
compliant (HP calculator)

HP calculator

EXP

Protected mode EXE by PharLap Software

PharLap

EXP

Exports Library File

VisualStudio

EXT

Exte
nsions descriptions file


EXX

Intermediate file by MsgPut

IBM LinkWay

EZF

Fax

Calculus EZ
-
Fax

[
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] F

Ext.

Description

Used by

F

Archive

FREEZE

F

Fortran language

source code file (in fixed form)

Many Fortran compilers

F01

Fax

perfectfax

F03

Fortran language

source code file (in free form)

Many Fortran compilers

F2R

Farandole Linear Module

Farandole

F3R

Farandole Blocked Linear Module

Farandole

F4

Fortran IV

source code file


F4A

Audio for
Adobe

Flash Player


F4B

Audio Book for Adobe Flash Player


F4P

Protected Video for Adobe Flash Player


F4V

Video for Adobe Flash Player


F77

Fortran language

source code file (in fixed form)

Many Fortran compilers

F90

Fortran language

source code file (in free form)

Many Fortran compilers

F95

Fortran language

source code file (in free form)

Many Fortran compilers

F96

Fax

Frecom FAX96

FAC

see FACE


FACE

Usenix FACE graphics file


FAL

Falcon script source

Falcon

FAM

Famtasia Famicom image format

Famtasia

FAQ

Frequently Asked Questions text file


FAR

Music format (Farandole Composer Module)

Farandole

FAS

Macsyma
compiled program


FAX

Fax (raster graphics in CCITT format)

most Fax programs

FBM

Fuzzy Bitmap


FC

Spell checking dictionary

Harvard Graphics 2.0

FCM

Binary file patch file (forward compression)

jlpak10.zip

FD

Declaration file

Microsoft Fortran

FD

Field offsets for compiler

DataFlex

FD

Front Door' resource files

FD

FDB

Font Definition Block

Ming library

FDS

fwNES Famicom Disk System image

fwNES

FDS

Headerless Famicom Disk System image


FDW

Form

F3 Design and
Mapping

FE

Data

Surface Evolver 3D surface

FEB

Button bar for Figure Editor

WordPerfect for Win

FEI

Fatal Error Infotable

Geoworks

FES

File produced when a fileless occurrence in 3D
Topicscape is exported to Windows

3D Topicscape

FF

Intelligont FIAS format


FF

Outline font description

Agfa Compugraphics

FFE

Front Fareast

Famicom image format


FFF

Fax

defFax

FFI

Atech FastFont (AllType)


FFIVW

File Format for the Interchange of Virtual Worlds


FFT

Dca/FFT Final Form Text text file (DisplayWrite)


FFT

DCA/FFT Final Form Text text file

DisplayWrite

FH3

Vector graphics

Aldus FreeHand 3.x

FH4

Vector graphics

Aldus FreeHand 3.x

FI

Interface file

Microsoft Fortran

FIF

Fractal Image Format file


FIG

Figure File

MATLAB

FIL

Table Data

Audit Command Language
(ACL)

FIL

File template

Application Generator

FIL

Filelist


FIL

Files list object file

dBASE Application
Generator

FIL

Mirror. FIL is the
name given to the saved FAT by the
mirror program included in some versions of DOS and
in PCTools

MS
-
DOS
-

FIL

Overlay

WordPerfect

FIL

File which was moved to the Virus Vault by
AVG


FILM

Filmkey film file

Filmkey Player

FIN

Print
-
formatted text file

Perfect Writer
-

Scribble
-

MINCE

FIO

Aldus PhotoStyler graphics filter


FIO

Image PALS viewer DLL


FIT

File Index Table

WindowsNT

FIT

see FITS


FIT

Fityk Script

Fityk

FITS

Flexible Image Transport System


FIX

Patch file


FKY

Macro file

FoxPro

FLA

Adobe Flash files' basic format


FLAC

Audio codec, Audio

file format


FLAME

Fractal configuration file

Apophysis

FLB

Format library

Papyrus

FLC

Animation format FLIC >320x200

AAPlay
-

Autodesk AniPro

FLD

Folder

Charisma

FLI

Animation format FLIC 320x200

Autodesk Animator

FLI

TeX font library

EmTeX

FLM

Film Roll

AutoCAD/AutoShade

FLP

Flstudio

project file

Fruity Loops (FlStudio)

FLT

Data/file

conversion filter (or overlay)

Alsud,
Microsoft Word

FLT

Filter file

Micrografx Picture Publisher

FLT

MultiGen Flight


FLT

Support file
-

graphics filter

Asymetrix ToolBook

FLX

Animation
format


FLX

Compiled binary

DataFlex

FLV

Flash video file

Flash Video Player

FM

Database

FileMaker Pro

FM1

Spreadsheet format overlay

Lotus 1
-
2
-
3 release 2.x

FM3

Device driver

Harvard Graphics 3.0

FM3

Spreadsheet

Lotus 1
-
2
-
3 release 3.x

FMB

File Manager Button bar

WordPerfect for Win

FMF

Font or icon file

IBM LinkWay

FMK

Makefile

Fortran PowerStation

FMO

Compiled format file

dBASE IV

FMT

Format file

dBASE IV
-

FoxPro
-

Clipper 5
-

dBFast

FMT

Gate3 format file


FMT

Style sheet

Sprint

FMV

Full Motion Video file


FN3

Font file

Harvard Graphics 3.0

FND

Files searching properties

Win95

FNI

FileNet Native

Document

FileNet

FNK

FunkTracker music module

AWAVE, FunkTracker

FNM

Fannie Mae Residential Loan Data (RLD) format for
mortgage submission to DO/DU.

Desktop Originator

Fnn

DOS screen text font
-

height nn pixels

fntcol13.zip

FNT

Font file

many

FNX

Inactive font

Exact

FO1

Font file

Borland Turbo C

FO2

Font file

Borland Turbo C

FOG

Fontographer Database File

Fontographer3.5

FOL

Folder of saved messages

1st Reader

FON

Log of all calls

Procomm
Plus

FON

Terminate phonebook

Terminate
-

Terminator
-

Telix

FON

Windows bitmapped font file

Win

FONT

Font data

unix

FOP

Freedom of the Press graphic file


FOR

Form

WindowBase

FOR

Fortran language

source file

many

FOT

Installed Truetype font

Windows Font Installer

FOX

Foxbase executable (precompiled .prg)

FoxBase

FP

Final Page file

FoxPro for DOS

FP

Tiff file

TIFF/IT P1

FP

Video file

DVICO/TVIX MPEG1
video file

FP3

Database

FileMaker Pro

FP4

Database

FileMaker Pro

FP5

Database

FileMaker Pro

FP7

Database

FileMaker Pro

FPC

Catalog

FoxPro

FPD

TMT Pascal compiled unit

TMT Pascal

FPM

Configuration file

FoxPro for MacIntosh

FPT

Foxpro memo field tables

FoxPro

FPU

Configuration file

FoxPro for Unix

FPW

Floorplan drawing

FloorPLAN plus for
Windows

FPW

Configuration file

Visual FoxPro

FPX

FlashPix Bitmap Image File

FlashPix

FR?

Packed mail

FTN software

FR3

Renamed dBASE III+ form file

dBASE IV

FRF

FontMonger Database file

FontMonger

FRG

Uncompiled report file

dBASE IV

FRL

GP
-
Forth library

GP
-
Forth

FRM

Registration or other form


FRM

Report file

dBASE IV
-

Clipper 5
-

dBFast

FRM

Visual Basic Form

Visual Basic

FRO

Compiled report file

dBASE IV

FRP

Form

PerForm PRO Plus
-

FormFlow

FRS

Screen Font Resource

WordPerfect for Win

FRT

Additional (FPT)
report description file

FoxPro

FRT

GP
-
Forth source file

GP
-
Forth

FRX

Main (DBF) report description file

Visual FoxPro

FRX

Visual Basic binary program file

Visual Basic

FSA

Applied Biosystems
Genetic Analysis data file

GeneScan

FSIM

Simulation File Format

Loudsoft

FSL

Form

Paradox for Windows

FSM

Farandole Composer WaveSample

Farandole

FSPROJ

Habanero Firestarter project

Habanero

Firestarter

FST

Linkable program

dBFast

FST

Temporal database file

GTKWave data file

FSTICK

Temporal database file

Flash Joystick

FSX

Data

Lotus 1
-
2
-
3

FTD

Falcon
dynamic template

Falcon

FTM

Fielded Text Meta
-

Contains schema/Meta for a Fielded
Text file

Fielded Text

FTM

Font file

Micrografx

FTX

Declared Fielded Text

Fielded Text

FTXT

text

Cloanto text document

FTP

Configuration

FTP Softwar
e PC/TCP

FW

Database

FrameWork

FW2

Database

Framework II

FW3

Database

Framework III

FWEB

Fortran WEB


FX

On
-
line guide

FastLynx

FXD

Phonebook

FAXit

FXP

Foxpro executable (precompiled .prg)

Visual FoxPro

FXS

FAX Transmit Format graphics file

WinFax

FYF

FileLoc

FyTek, Inc.

[
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