A
ACE: Ace compressed archive format
ACT: Microsoft office helper files
AIF, AIFF: Audio Interchange Files, Silicon Graphic and Macintosh Application Sound Format
ANI: Animated Cursor in Windows
ARC: LH ARC compressed archive file
ARJ: Robert Jung ARJ compressed archive file
ASD: Auto Save file for Microsoft Word; Microsoft Advanced Streaming Format (Microsoft Office Assistant File)
ACT: Audio Interchange File, Silicon Graphic and Macintosh application sound format
ACT. ASF: Microsoft Advanced Streaming Format (ASF) description file; Velvet Studio example file that can be opened with NSREX
ASF: Microsoft Advanced Streaming Format file
ASM: Assembly language source file, Pro/E assembly file
ASM: Assembly language source file. Pro/E assembly files
ASP: Dynamic Web page files; ProComm Plus installation and connection script files; Astound introduction files
AST: Astound multimedia files; ClarisWorks "helper" files
Axx: ARJ zip file packet number file, used to compress a large file into several small packets (xx takes the number 01-99)
A3L: Authorware 3.x library files
A4L: Authorware 4.x library files
A5L: Authorware 5.x library files
A5L: Authorware 5.x library files
A5L: Authorware 5.x library files
A3M, A4M: Authorware Macintosh unpackaged files
A3W, A4W, A5W: unpackaged Authorware Windows files
B
BAK: Backup files
BAS: BASIC source files
< p>BAT: batch fileBIN: binary file
BINHex: an Apple encoding format
BMP: Windows or OS/2 bitmap file
BOOK: Adobe FrameMaker Book file
BOX: Lotus Notes mailbox files
BPL: Borlard Delph 4 Packaging Library
BSP: Quake graphics files
BUN: CakeWalk sound bundle (a MIDI program)
C
C
C0l: Typhoon Waveform files
CAB: Microsoft Compressed Archive File
CAD: Softdek's Drafix CAD file
CAM: Casio Camera Format
CAP: Compressed Music File Format
CAS: Comma Separated ASCII File
CCB: Visual Basic Dynamic Button Configuration File
CCH: Corel Chart File
CCO: CyberChat Data File
CCT: Macromedia Director Shockwave Projection
CDA: CD Audio Track
CDF: Microsoft Channel Definition Format File
CDI: Philip's High Density Disk Interactive Format
CDM: Visual dBASE Custom Data Module File
CDR: CorelDRAW Drawing File; raw audio CD data file
CDT: CorelDRAW Template
CDX: CorelDRAW compressed drawing file; Microsoft Visual FoxPro index file
CFG: Configuration file
CGI: Public **** Gateway Interface script file
CGM: Computer Graphics Metafile
CH: OS/2 configuration file
CHK : fragments of files saved by Windows Disk Defragmenter or disk scanning
CHM: compiled HTML files
CHP: Ventura Publisher chapter files
CHR: character sets (font files)
CHT: ChartViem files; Harvard Graphics vector files
CIF: Adaptec CD Creator CD image files
CIL: Clip Gallery download packages
CIM: SimCity 2000 files
CIN: OS/2 change control files used to keep track of changes in INI files
CLASS: Java class files
CLP: Windows Clipboard files
CLL: Crick Software Clicker files
CLS: Visual Basic class files
CMD: Windows NT, OS/2 command files; DOS CD/M command files; dBASE II program files
CPI: Microsoft MS-DOS Code Page Information files
CPL: Control Panel Extension, Corel Color Plates
CPP: C++ code files
CPR: Corel Provides Instructions files
CPT : Corel Photo-Painting Image
CST: Macromedia Director Cast file
CUR: Windows Cursor File
D
DBF: dBASE file, a format created by Ashton-Tate that can be ACT! Lipper, FoxPro, Arago, Wordtech, Xbase, and similar databases or database-related products; usable data files (can be opened by Excel
97); Oracle 8.1.x tablespace files
DBX: DataBearn images; Microsoft Visual FoxPro form files
DCT: Microsoft Visual FoxPro database container
DCU: Delphi Compilation Unit files
DCX: Microsoft Visual FoxPro database container; PCX-based fax images; macros
DIR: MacromediaDirector file
DLL: Dynamic Link Library
DOC: FrameMaker or FrameBuilder document; Word Star document, Word
Perfect document, Microsoft: Word document; DisplayWrite documents
DOT: Microsoft Word document templates
DPL: Borland Delph 3 compression library
DRV: Driver
DRW: Micrografx Designer/Draw; Pro/E drawing files
DSF: Micrografx Designer VFX files
DSG: DOOM saved files
DSM: Dynamic Studio Music Module (MOD) files
DSP: Microsoft Developer Studio project files
DSQ: Corel QUERY (query) file
DST: Embroidery machine graphics file
DSW: Microsoft Developer Studio workspace file
DTA: World Bank (World Bank) STARS data file
DTD: SGML Document Type Definition (DTD) file
DTED: Digital Terrestrial Elevation Data (data format for graphs) file
DTF: Symantec Q&A related database data file
DTM: DigiTrakker Module file
DUN: Microsoft Pull Network Export File
DV: Digital Video File (MIME)
DWG: AutoCAD engineering drawing file; drawing format for older versions of AutoCAD or Generic CADD
DXR: Macromedia Director Protected (non-editable) Movie File
E
EDA: Ensoniq ASR disk image
EDD: Element Definition Document (FrameMaker + SGML document)
EDE: Ensoniq EPS disk image
EDK: Ensoniq KT disk image
EDQ. SQ1/SQ2/Ks32 disk images
EDS: Ensoniq SQ80 disk images
EDV: Ensoniq VFX-SD disk images
EFA: Ensoniq ASR files
EFE: Ensoniq EPS files
EFK: Ensoniq KT files
EFQ: Ensoniq SQ1/SQ2/Ks32 files
EFS: Ensoniq SQ80 files
EFV: Ensoniq VFX-SD files
EMD: ABT Extension Module
EMF: Windows Enhanced Metafile
EML: Microsoft Outlook Express mail message (MIME RTC822) file
EXE: Executable file (program)
F
FAV: Microsoft Outlook Navigation Bar
FAX: Fax Type Image
FCD: Virtual CD-ROM
FDF: Adobe Acrobat Forms Document File
FLA: Macromedia Flash Movie
FND: Microsoft Explorer saved search file (Find applet)
< p>FON: System fontFRT: Microsoft FoxPro report file
FRX: Visual Basic form text; Microsoft FoxPro report file
FXP: Source file compiled by Microsoft FoxPro
G
GDM: Ringtones, Whistles, and Soundboard Module Format
GetRight: GetRight incomplete download file
GHO: Norton Clone Disk Image
GID: Windows 95 Global Index File (includes help status)
GIF: CompuServe bitmap files
GL: Animation format
GRP: Program Management Group
H
HEX: Macintosh BinHex 2.0 files
HLP: Help files; Date CAD Windows help files
HPP: C++ program header files
HQX: Macintosh BinHex 4.0 files
HT: HyperTerminal
HTM, HTML: HyperText Document
HTT: Microsoft HyperText Template
HTX: Extended HTML templates
I
ICO: Windows Icon
IDX: Microsoft FoxPro related database index files; Symantec Q&A related database index files; Microsoft Outlook Express files
IMG : GEM image
INF: Information File
INI: Initialization File; Mwave DSP Synth's "nwsynth.ini" GMS installation; Cravis Ultrasound bank installation
INP: Oracle version 3.0 or earlier form source code
INRS: INRS Remote Communications Sound
INS: InstallShield installation script; X-Internet signature file; Ensoniq EPS word cluster device; Cell/II MAC/PC sampling device
INT: Intermediate code, when a source program is syntax-checked and compiled to produce an executable code
IOF: Findit documentation
IQY: Microsoft Internet Query Yield File
ISO: Listing of files on a CD-ROM in accordance with the ISD 9660 standard for the CD-ROM file system
ISP: X-Internet Signature File
IST: Digital Tracking Device File
ISU: InstallShield Uninstallation Script
IT: Impulse Tracking System Music Module (MOD) File
ITI: Impulse Tracking System Instrument
ITS. System Sampling, Internet Document Location
IV: File format used in Open Inventor
IVD: More than 20/20 microdata dimensions or variable level files
IVP: More than 20/20 subset of user profiles
IVT: More than 20/20 tables or sets of Data files
IVX: more than 20/20 microdata catalog files
IW: Idlewild screen saver
IWC: Install Watch documentation
J
J62: Ricoh Camera Format
JAR: Java archive file (a type of JAR: Java Archive File (a compressed file used for applets and related files)
JAVA: Java Source File
JAR: Java Archive File (a compressed file used for applets and related files)
JAVA: Java Source File
JFF, JFIF, JIF: JPEG File
JPE, JPEG, JPG: JPEG graphics files
JS: javascript source files
JSP: HTML web pages containing a reference to a Java servlet
K
KAR: Karaoke MIDI files (text + MIDI)
L
LAB: Visual dBASE tagged file
LBT, LBX: Microsoft FoxPro tagged file
LDB: Microsoft Access locked file
LHA: LZH replacement file suffix
LOG: log file
LZH: LH ARC compressed archive
M
M1V: MPEG related files (MIME "mpeg" type)
M3D: Corel Motion 3D animation files
M3U: MPEG URLs (MIME sound files)
MAM: Microsoft Access Macro
MAQ: Microsoft Access Query File
MAR: Microsoft Access Report File
MBX: Microsoft Outlook save email format; Eudora mailbox
MCW: Microsoft Word document for Macintosh
MDB: Microsoft Access database
MDN: Microsoft Access empty database template
MDW: Microsoft Access workgroup file
MID: MIDI Music
MMM: Microsoft Multimedia Movie
MOV: QuickTime for Windows Movie
MP2: Layer 2 MPEG Audio File
MP3: Layer 3 MPEG Audio File
MPA: MPEG Related File , MIME "mpeg type"
MPE, MPEG, MPG: MPEG animation files
MPP: Microsoft Project files; CAD drawing file format
MPR: Microsoft FoxPro menu (compiled)
MPR: Microsoft FoxPro menu (compiled)
MPR: Microsoft FoxPro menu (compiled) compiled)
MSI: Windows Installer Package
MSN: Microsoft Network Documents; Descent Mission files
O
OBD: Microsoft Office Binder
OBJ: Object File
OBZ: Microsoft Office Loose-leaf Binder Wizard
OCX: Microsoft Object Linking and Embedding Custom Control
ODS: Microsoft Outlook Express Mailbox File
OFT: Microsoft Outlook Template
OPX: OPL Extended DLL (Dynamic Link Library)
OSS: Microsoft Office Lookup Files
OST: Microsoft Exchange / Outlook Offline Files
P
PAL: Compressed Files
PART: Go!Zilla Parts Download Files
PAS: Pascal source code
PCS: PICS animation files
PDF: Adobe Acrobat
Exportable Document Format files (which can be displayed in a Web browser); Microsoft Systems Management Server package definition files; NetWare printer definition
PHP, PHP3: HTML pages with PHP scripts
PHTML: HTML pages with PHP scripts; HTML interpreted by Perl parsing
PM5: Pagemaker 5.0 files
PM6: Pagemaker 6.0 files
PPS: Microsoft System Management Server package definition files.
PPS: Microsoft Powerpoint Slide Show
PPT: Microsoft Powerpoint Presentation
PRF: Windows System File, Macromedia Director Setup File
PSD: Adobe photoshop Bitmap files
PSM: Protracker Studio model format; source data files for Epic games
PST: Microsoft Outlook personal folder files
PWL: Windows 95 password list files
Q
QIF: QuickTime-related images (MIME); Quicken import files
QT, QTM: QuickTime movies
QTI, QTIF: QuickTime-related images
QTP: QuickTime Prioritized files
QTS: Mac PICT image files; QuickTime-related images
QTX: QuickTime-related images
R
RA: RealAudio sound files
RAM: RealAudio metafiles
RAR: RAR compressed archives (Eugene Roshall format
REC: Recorder macro; RapidComm sound file
REG: Registry file
REP: Report file for Visual dBASE
RES: Resource file for Microsoft Visual C++
RM: RealAudio video file
RM: RealAudio metafile
RMF: RealAudio Metafile
RAM: RealAudio Metafile
RMF: Rich Map Format (used by 3D game editors to save maps)
ROM: Cartridge-based home game emulator files (exact copies of ROMs from Atari 2600, Colecovision, Sega, Nintendo, etc. cartridges, which are not interchangeable between emulators)
Rxx. /p>
Rxx: RAR compressed file on multi-volume archive (xx=a number between 1 and 99)
S
SAV: Game save file
SB: Raw signed byte (8-bit) data
SBK: Creative Labs' Soundfont 1.0 Bank file; ( Soundb laster)/EMU SonndFont v1.x Bank file
SBL: Shockwave Flash object file
SCF: Windows Explorer command file
SCH: Microsoft Schedule+1
< p>SCP: Dial-up network script fileSCR: Windows screen saver; fax image; script file
SFX: RAR self-extracting archive
SHTML: HTML file with server-side includes (SSI)
SPL: Shockwave Flash object; DigiTrakker sampling
SQL: Informix SQL query; file extension commonly used by database products for SQL queries (script, text, binary)
STM: short suffixed form of .shtml containing a server-side include (SSI) HTML file; Scream Tracker V2 Music Module (MOD) files
STR: Screensaver files
SWA: Shockwave sound files in Macromedia director files (MP3 files)
SWF: Shockwave Flash Objects
SYS: System files
T
T64: Commodore 64 emulator tape image files
THEME: Windows 95 desktop theme files
TIF, TIFF: Tagged Image File Format (TIFF) bitmaps
TMP: Temporary Windows Messages
TRM: Terminal files
TXT.
TXT: Sound data in ASCII text format
TZ: Old compressed format file
V
VBA: VBase file
VBP: Microsoft Visual Basic project file
VBW: Microsoft Visual Basic Workspace files
VBX: Microsoft Visual Basic user-customizable controls
VQE, VQL: Yamaha Sound-VQ locator files
VQF: Yamaha Sound-VQ files (standards may appear)
VRF: Oracle 7 Configuration files
VSL: Download list files (GetRight)
W
WAB: Microsoft Outlook files
WAD: Large files containing DOOM games with videos, player levels, and other information
WAL: Quake 2 body files
WAV: Windows Waveform Sound Forms
WBK: Microsoft Word Backup Files
WFM: Visual dBASE Windows Forms
WFN: Symbols Used in CorelDRAW
WIZ: Microsoft Word Wizard
WRL: Virtual Reality Model
WWL: Microsoft Word interpolator file
X
X
XLK: Microsoft Excel Backup
XLL: Microsoft Excel interpolator file
XLM: Microsoft Excel Macros
XLS: Microsoft Excel Worksheets
XLT: Microsoft Excel Templates
XLV: Microsoft Excel VBA Modules
XLW: Microsoft Excel Workbook / Workspace
Z
ZAP: Windows Software Installation Profile
ZIP: Zip file
Other
000-999: Used for numbering older (or backed up) versions of files (e.g., the CONFIG.SYS file that was changed by the installer); also used to number multiple user-related data files of a small range of PC Multiple user-related data files for small PC applications
12M: Lotus 1-2-3 97 SmartMaster files
123: Lotus 1-2-3 97 files
2D: VersaCAD 2D drawing files
2GR, 3GR: VGA graphics driver/configuration files for Windows. VGA graphics drivers/profiles
386: files for use on 386 or higher processors
3D: 3-dimensional drawing files for VersaCAD
3DM: 3D NURBS modeler, Rhino
3DS: 3D Studio (under DOS) format files
386: files for use on 386 or higher processors
4GE: Informix 4GL compiled code
4GL: Informix 4GL source code
669: Composer 669; UNIX Composer music modeling files; 669 track module
# 01 and higher numbers: picture file numbering method for a series of movies scanned for computer presentations
$$$: archive files used by OS/2 for tracking
@@@: screen files for use during installation and instructional files for use in applications like Microsoft Code view for C