| A |
Library file (Unix) |
| A3L |
Authorware 3.x library |
| A3M |
Authorware MacIntosh file (unpackaged) |
| A3W |
Authorware Windows file (unpackaged) |
| A4L |
Authorware 4.x library |
| A4M |
Authorware MacIntosh file (unpackaged) |
| A4P |
Authorware file (packaged without runtime) |
| A5L |
Authorware 5.x library |
| A5W |
Authorware Windows file (unpackaged) |
| AA |
Audible audio file (commonly used for downloadable audio books) |
| AAM |
Authorware shocked file |
| AAS |
Authorware shocked packet |
| AB |
Applix Builder file |
| ABF |
Adobe Binary Screen Font |
| ABK |
Corel Draw AutoBackup |
| ABM |
Audio album file (HitPlayer) |
| ABO |
Applix Builder Turbo file |
| ABP |
Barcode profile file in Alver Valley Software's AVS Barcode Source |
| ABS |
Standard GNU compiler output file for a PC platform |
| AC$ |
AutoCAD Undo Info file |
| AC3 |
Dolby Digital audio files used on DVDs |
| ACA |
HTTP animation file (Microsoft Agent) |
| ACB |
ACBM Graphic image |
| ACC |
DR-DOS Viewmax file |
| ACD |
Sonic Foundry ACID file |
| ACE |
ACE Archiver Compression file |
| ACF |
HTTP character file (Microsoft Agent) |
| ACI |
ACI development appraisal (ACIWEB) |
| ACL |
Corel Draw 6 keyboard accelerator file |
| ACM |
Interplay compressed sound file (Fallout 1,2, Baulder's Gate) |
| ACP |
Microsoft Office Assistant Preview file |
| ACR |
American College of Radiology file |
| ACS |
Character structured storage file (Microsoft Agent) |
| ACT |
FoxPro Foxdoc Action Diagram |
| ACV |
Used to Compress and decompress audio data |
| AD |
After Dark screensaver |
| Ada |
Ada source text file (non-GNAT) |
| ADB |
HP 100LX Organizer Appointment database |
| ADC |
Scanstudio 16 color Bitmap Graphic file |
| ADD |
OS/2 adapter driver file used in the boot process |
| ADF |
Amiga disk file |
| ADI |
AutoCAD device-independent binary plotter file |
| ADL |
QEMM Mca adaptor description library |
| ADM |
Windows NT policy template |
| ADN |
Lotus 1-2-3 Add-In file |
| ADP |
FaxWorks Faxmodem setup file |
| ADR |
Smart Address address book |
| ADS |
Ada source text specification file (GNAT) |
| ADT |
AdTech Fax file |
| ADX |
Lotus Approach dBase Index |
| ADZ |
Packed ADF file (Extracts with WinZip) |
| AE |
Author/Editor file (SoftQuad) |
| AEP |
ArcExplorer project file |
| AF2 |
ABC FlowCharter 2.0 Flowchart |
| AF3 |
ABC Flowchart |
| AFC |
Apple Sound file |
| AFI |
Truevision Bitmap graphic |
| AFM |
HP NewWave Cardfile application |
| AG |
Applix graphic |
| AI |
Corel Trace drawing |
| AIF |
Audio Interchange File, a sound format used by Silicon Graphics and Macintosh applications |
| AIFC |
Similar to AIF (compressed) |
| AIFF |
Similar to AIF |
| AIM |
AOL Instant Messenger Launch file |
| AIN |
AIN Compressed archive |
| AIO |
APL Input Output |
| AIS |
Velvet Studio Instruments file |
| AIS |
Xerox Arry of Intensity Samples Graphic |
| AIX |
HP NewWave Cardfile Application data |
| AKB |
HaleyAuthority Authority Knowledge Base File |
| AKW |
Contains all A-keywords in the RoboHELP Help Project Index Designer not associated with topics |
| ALAW |
European Telephony audio |
| ALB |
JASC Image Commander album |
| ALI |
Document file (SAP proprietary format) |
| ALIAS |
Alias Image |
| ALL |
WordPerfect for Windows General printer information file |
| ALS |
Alias Image |
| ALT |
WordPerfect Library Menu |
| AM |
Applix SHELF Macro |
| AMF |
DSMIA/Asylum module music (Crusader,No Remorse,Aladdin) |
| AMG |
ACTOR System image |
| AMI |
Annotation file (Cocreate SolidDesigner) |
| AMR |
Adaptive Multi-Rate Codec File |
| AMS |
Extreme's Tracker Module |
| AMU |
Sony Photo Album |
| AN |
Text file (Sterling Software) (Groundworks COOL Business Team Model) |
| ANC |
Canon Computer Pattern Maker file that is a selectable list of pattern colors |
| ANI |
Microsoft Windows Animated cursor |
| ANM |
DeluxPaint Animation |
| ANN |
Windows 3.x Help annotation |
| ANS |
ANSI Text file |
| ANT |
SimAnt for Windows saved game |
| AOM |
Adobe Download Manager Online Manager Shortcut |
| AOS |
Nokia 9000 Add-on software |
| AOT |
Applicatio binary object template file (ZenWorks snAPPshot) |
| AP |
WHAP Compressed Amiga archive |
| APC |
Lotus 1-2-3 Printer driver |
| APD |
Lotus 1-2-3 Printer driver |
| APE |
Winamp Plugins AVS File |
| APF |
Project file (Allaire) (Created by Homesite) |
| API |
Lotus 1-2-3 Printer driver |
| APL |
APL Workspace file |
| APP |
Symphony Add-in Application |
| APR |
Employee Appraiser Performance Review file |
| APS |
Advanced patching systems with error checking, (Similar to IPS) |
| APT |
Text mode application file (Centura Team Developer) |
| APX |
Borland C++ Appexpert database |
| AQ |
Applix data |
| ARC |
SQUASH Compressed archive |
| ARF |
Automatic Response file |
| ARI |
Aristotle audio file |
| ARJ |
Robert Jung ARJ compressed archive (ARJ) |
| ARK |
ARC File Archiver CPM/Port archive |
| ARL |
AOL v4.0 organizer file |
| ARR |
Atari Cubase Arrangement |
| ART |
Canon Crayola art |
| ARX |
AutoCAD Runtime Extension |
| AS |
Applix Spreadsheet |
| ASA |
Microsoft Visual InterDev file |
| ASC |
PGP armored encrypted file |
| ASD |
Lotus 1-2-3 Screen driver |
| ASE |
Velvet Studio Sample file |
| ASF |
Microsoft Advanced Streaming Format |
| ASH |
TASM 3.0 Assembly language header |
| ASI |
Borland C++/Turbo C Assembler Include file |
| ASM |
Pro/E assembly file |
| ASO |
Astound Dynamite Object |
| ASP |
Procomm Plus setup and connection script |
| ASRTC |
AurelloSoft Removal Tool Configuration File |
| AST |
Claris Works "assistant" file |
| ASV |
DataCAD Autosave file |
| ASX |
Microsoft Advanced Streaming Redirector file |
| AT2 |
Aldus Persuasion 2.0 Auto Template |
| ATM |
Adobe Type Manager data/info file |
| ATT |
AT&T Group 4 bitmap |
| ATW |
AnyTime Deluxe for Windows personal information manager file from Individual Software MultiModule screensaver |
| AU |
Audio U-law (pronounced mu-law) |
| AUD |
Audio file (Westwood Studios) (Kyrandia 3,C&C,RedAlert,C&C:TS) |
| AUP |
Audacity project file |
| AUX |
ChiWriter Auxilliary Dictionary file |
| AVA |
Avagio Publication |
| AVB |
Inculan Anti-Virus virus infected file |
| AVG |
AVG Virus Information Database |
| AVI |
Microsoft Audio Video Interleaved file for Windows movie |
| AVR |
Audio Visual Research file |
| AVS |
Stardent AVS-X Image |
| AVX |
File Extension (ArcView) |
| AW |
Applix Words file |
| AWD |
FaxView Document image |
| AWE |
Acrobat Bookmark XML File |
| AWK |
AWK Script/Program |
| AWM |
Animation Works Movie |
| AWR |
Telsis file for digitally stored audio |
| AWS |
StatGraphics Data file |
| AXL |
ArcIMS XML project file |
| AXT |
ASCII application object template (ZenWorks snAPPshot) |
| AXX |
ARJ compressed file from a multi-volume archive (xx = a number from 01 to 99) |
| IAM |
Autodesk Inventor assembly file |
