A File Extensions

File Extension File Type Popularity
.A Static Library 4
.A1WISH Audials Wishlist File 4.3
.A2B Adlib Tracker II Instrument Bank 4.5
.A2C Alice Object File 4.2
.A2I Adlib Tracker II Instrument File 4.5
.A2L ASAP2 ECU Description File 4.5
.A2M TS-AudioToMIDI Settings File 4.2
.A2M Adlib Tracker II File 4
.A2P Adlib Tracker II Pattern File 3.5
.A2T Adlib Tracker II Tiny Module File 3.5
.A2THEME Aston 2 Theme File 4.5
.A2W Alice World 4.3
.A2W Adlib Tracker II Instrument Bank with Macros 3.5
.A3D Alternativa Player 3D Export File 3.5
.A3X Compiled AutoIt v3 Script 3.2
.A4P A4Desk Pro Project File 4.4
.A5L Authorware 5 Library 4
.A5W Alpha Five Webpage File 4.5
.A5W Authorware 5 Windows File 3.5
.A5WCMP Alpha Five Web Components File 3.5
.A65 Authorware 6.5 File 3.5
.A6P Authorware 6 Program 4.5
.A7D Authorware 7 Model 3.5
.A7L Authorware 7 Library 3.5
.A7P Authorware 7 Project 4
.A7R Authorware 7 Runtime File 4
.A8S Anim8or Script 4.2
.AA Audible Audio Book File 4.2
.AA Generic CD Image 3
.AA3 ATRAC Audio File 4.2
.AAC Advanced Audio Coding File 4.3
.AAE Sidecar Image Format File 4
.AAF Advanced Authoring Format File 4
.AAM Authorware Map File 4.3
.AAN Pro Tools Elastic Audio Analysis File 3.5
.AAO America's Army Map File 4.6
.AAO Agenda At Once File 3.5
.AAUI Acrobat User Interface File 3.8
.AAWDEF Ad-Aware Definitions File 4.4
.AAX Audible Enhanced Audiobook File 3.6
.AAXPLUGIN Avid Audio eXtension Plugin File 4.8
.AB Android ADB Backup File 3.9
.AB Ambling BookPlayer MP3 File 3.5
.AB DNA Sequence File 3
.AB Applix Builder File 3
.AB1 DNA Electropherogram File 4.3
.AB3 PhotoImpact 3 Album File 4
.ABA Palm Address Book Archive 4
.ABA Avant Browser Add-on File 3.5
.ABBU Address Book Backup 3.5
.ABC ActionScript Byte Code File 4.5
.ABC Micrografx ABC FlowCharter 6 File 4.2
.ABC ABC Source File 3.9
.ABC ABC Music Notation 3.6
.ABCD AudioVisual Book Data File 4.2
.ABCDDB Apple Address Book Contact List 3.2
.ABCDP Address Book CoreData Person File 3.5
.ABDATA Adobe Bridge Data File 4.2
.ABF Adobe Binary Screen Font File 4.5
.ABF Analysis Services Backup File 4.2
.ABI DNA Chromatogram File 4.4
.ABI AbiWord Plug-in 3.3
.ABK Automatic Backup File 4.7
.ABK Arena Opening Book File 4.5
.ABK Need for Speed Underground Audio File 4.4
.ABKPRJ Ashampoo Backup Project 4
.ABM Music Album 4.5
.ABM Photo Album 4.2
.ABP AVS Barcode Profile 3.8
.ABR Adobe Photoshop Brushes File 4.6
.ABS Absolute Database File 4.2
.ABS AB SuDoKu Saved Game 3.5
.ABS TurboZIP Auto Compress Script 3.5
.ABS Avant Browser Skin File 3
.ABT Annotated Braille Text File 4
.ABU Asus App Backup File 3.8
.ABW AbiWord Document 4.2
.ABX WordPerfect Address Book 3.5
.ABY AOL Address Book File 4
.AC Autoconf Script 4.8
.AC AC3D 3D File 4.2
.AC$ AutoCAD Temporary File 3.5
.AC3 Audio Codec 3 File 4.3
.AC5 ArtCut 5 Document 3.8
.AC6 ArtCut 6 Document 3.2
.ACB Adobe Photoshop Color Book File 4.5
.ACB AutoCAD Color Book File 4.2
.ACB AOL Cab Launcher 3.8
.ACBL Adobe Color Book Legacy File 3.5
.ACC GEM Accessory File 4
.ACC Graphics Accounts Data File 4
.ACCDA Access Add-in File 4
.ACCDB Access 2007 Database File 4.3
.ACCDC Microsoft Access Signed Package 4
.ACCDE Access Execute Only Database 4.5
.ACCDR Access Runtime Application 4
.ACCDT Microsoft Access Database Template 4.5
.ACCDU Access Add-in File 3.5
.ACCFT Microsoft Access Data Type Template 4
.ACCOUNTPICTURE-MS Windows 8 Account Picture File 4.5
.ACD ACID Project File 4.2
.ACD RSLogix 5000 Program 3.7
.ACD-BAK MAGIX ACID Project Backup File 4.5
.ACD-ZIP Sony ACID Project With Embedded Media File 4.5
.ACE WinAce Compressed File 4.3
.ACF Steam Application Cache File 4.5
.ACF X-Plane Aircraft File 4.3
.ACF Agent Character Data File 3.9
.ACF Adobe Photoshop Custom Filter File 3.8
.ACFM Adobe Composite Font Metrics File 4
.ACG Audio Comparer Group File 4
.ACG Agent Preview File 3.5
.ACID ACID Encrypted File 3.5
.ACL AutoCorrect List File 4.6
.ACM Interplay Audio File 4.1
.ACO Adobe Photoshop Color Swatch File 4.7
.ACORN Acorn Image 3.5
.ACP Alfresco Content Package 4.8
.ACP aacPlus Audio File 4.2
.ACP EditPlus Auto-Completion File 3.5
.ACR Audio Comparer Results File 4.5
.ACR ACRobot Script 4.4
.ACR Acer eRecovery Management Backup File 3.5
.ACR American College of Radiology File 3
.ACROBATSECURITYSETTINGS Adobe Acrobat Security Settings File 4.7
.ACROPLUGIN Adobe Acrobat Plug-in 4.7
.ACS Agent Character File 4.7
.ACS2 AIMP Skin File 4.4
.ACS3 AIMP Skin File 4.7
.ACSM Adobe Content Server Message File 4.2
.ACT ADPCM Compressed Audio File 4.6
.ACT Alma CAD/CAM Document 4.1
.ACT Adobe Color Table File 4
.ACT Genesis3D Actor File 3.8
.ACT DS Game Maker Action File 3.2
.ACT FoxPro Documenting Wizard Action Diagram 3.2
.ACTION Automator Action 4.4
.ACV Photoshop Curves File 4.5
.ACWW Animal Crossing Wild World Pattern File 4.6
.ACZ AppCraft Project 4.2
.AD After Dark Screensaver 4.2
.ADA Ada Source Code 3.5
.ADADOWNLOAD Adobe Download Assistant Partial Download File 4.3
.ADB Ada Body File 4.3
.ADB Alpha Five Database File 4
.ADB Ability Database File 3.8
.ADB Now Contact Address Book Template 3.2
.ADBLOCK Alpha Five Library Temporary File 3.8
.ADCP Adobe Device Central Project File 4.5
.ADD Dynamics AX Developer Documentation File 3.5
.ADDIN Visual Studio Add-in Definition File 4
.ADDISM Addism Data File 4
.ADE Access Project Extension 3.5
.ADF Amiga Disk File 4.8
.ADF ACT! Data File 4.5
.ADF ESRI ArcInfo Binary Grid Format 4.3
.ADG Ableton Device Group 3.9
.ADI [email protected] Disk Image Backup File 4.7
.ADI AutoCAD Device-Independent Binary Plotter File 4.5
.ADI Dynamics AX Developer Documentation Index File 4.5
.ADI AOMEI Backupper Disk Backup File 4.5
.ADM Administrative Template File 4.5
.ADM Portfolio Admin-Level Access Flag 4.3
.ADMX Group Policy Administrative Template File 4.7
.ADN Access Blank Project Template 3.5
.ADO Adobe Photoshop Duotone Options File 3.5
.ADOC AsciiDoc File 4
.ADP Access Project 3.5
.ADPP Adobe Device Profile Package 4
.ADR Opera Bookmarks File 4.3
.ADS Ada Specification File 4.5
.ADT ACT! Document Template 4.7
.ADT World of Warcraft Map File 4.7
.ADT ADTS Audio File 4.4
.ADT AutoCAD Audit Log 3.5
.ADTS Audio Data Transport Stream File 4
.ADV Ableton Device Preset File 3.9
.ADV Nortek Acoustic Doppler Velocimeter File 3.8
.ADV Audio Driver File 3.6
.ADVS Adobe Device Central Device Set 4
.ADX Approach Index File 4.2
.ADZ Compressed Amiga Disk File 4
.AEA Ae Timer Alarm Document 3.8
.AEA AdWords Editor Archive 3.5
.AEC Cinema 4D After Effects Composition 4.2
.AECACHE After Effects Cache File 3.8
.AEP After Effects Project 4.7
.AEP Activ E-Book Project 4.5
.AEP Advanced Encryption Package Encrypted File 3.7
.AEPKEY Advanced Encryption Package Key File 4
.AEPX After Effects XML Project 4.4
.AES AES Crypt Encrypted File 4
.AES ooVoo Log File 3.2
.AETX After Effects XML Project Template 4.1
.AEX Alpha Five Compiled Global Functions File 3.9
.AFC Mass Effect 2 Audio File 4.5
.AFD Alphacam Flame Drawing 4.5
.AFD AFF Disk Image Part File 4
.AFDESIGN Affinity Design Document 3.3
.AFF Spellcheck Dictionary Description File 4.4
.AFF AFF Disk Image 4.1
.AFI AOMEI Backupper File Backup File 3.9
.AFM Adobe Font Metrics File 3.5
.AFM AFF Metadata File 3.2
.AFP Advanced Function Presentation File 4
.AFP FileProtector Encrypted File 3.8
.AFPLOC Apple Filing Protocol Location 4
.AFT Ancestry.com Family Tree Database 4
.AFX Auto FX PhotoGraphic Edges Image 4
.AFZPLUG AfterShot Pro Plugin Archive 3.5
.AGE3REC Age of Empires 3 Recording 4.5
.AGE3SAV Age of Empires 3 Save File 4.7
.AGE3SCN Age of Empires 3 Scenario File 4.4
.AGE3XREC Age of Empires 3: The WarChiefs Recording 4.2
.AGE3XSAV Age of Empires 3: The WarChiefs Save File 4.5
.AGE3YREC Age of Empires 3: The Asian Dynasties Recording 4
.AGE3YSAV Age of Empires 3: The Asian Dynasties Save File 4.5
.AGG Bulk Data File 4.2
.AGGR Adobe Captivate Aggregate File 4
.AGI Asterisk Gateway Interface File 4.2
.AGIF Active GIF Creator Project 3.8
.AGLIB Adobe Photoshop Lightroom Library 4.2
.AGM DTS Multi-channel Pro Packer File 4
.AGMODULE Photoshop Lightroom Module 3.5
.AGP ArtGem Project File 4
.AGR Ableton Groove File 4.5
.AGTEMPLATE Adobe Photoshop Lightroom Template 3.5
.AGTOOLKIT Adobe Photoshop Lightroom Toolkit 3.5
.AGX AGT Game File 4.5
.AHD Dynamics AX Online Help Data File 4
.AHI Dynamics AX Online Help Index File 4
.AHK AutoHotkey Script 4.7
.AHL eMule Metadata File 4
.AHS Adobe Halftone Screen File 4
.AHU Adobe Photoshop HSL File 4
.AHX WinAHX Tracker Module 4.2
.AI Adobe Illustrator File 4.4
.AI Battlefield 2 Artificial Intelligence File 4
.AIA MIT App Inventor Source Code File 4.3
.AIA Adobe Illustrator Action File 4
.AIDL Android Interface Definition Language File 4.2
.AIF Audio Interchange File Format 4.4
.AIF Symbian Application Information File 4.1
.AIFB AIF Builder Project File 4
.AIFC Compressed Audio Interchange File 3.3
.AIFF Audio Interchange File Format 4.5
.AIM AIMMS ASCII Model File 4.2
.AIM AOL Instant Messenger Launch File 3.6
.AIMPPL AIMP Playlist File 4.6
.AIN Source Engine Compiled AI Nodegraph File 4.7
.AIN AIN Compressed File Archive 4
.AIP Illustrator Plug-in 4.3
.AIP Advanced Installer Project 4
.AIP Actual Installer Project 3.5
.AIR Adobe AIR Installation Package 4.5
.AIR M.U.G.E.N. Animation File 4.2
.AIS Velvet Studio Instrument 3.5
.AIS ACDSee Image Sequence File 3.5
.AIT Adobe Illustrator Template 3.5
.AIU Advanced Installer Updates Configuration File 4.7
.AJP CCTV Video File 4
.AKP Akai Sampler File 4
.ALAW A-Law Compressed Sound Format 3.2
.ALB Alpha Five Library 3.8
.ALBUM GLC_Player Album File 4
.ALC Ableton Live Clip File 4.2
.ALC Dynamics AX Label Description File 3.5
.ALD Dynamics AX Application Label Data File 4
.ALDF Aldfaer Genealogy File 4
.ALE Avid Log Exchange File 4
.ALF ACT! Lookup File 4.8
.ALI Dynamics AX Label Index File 4.5
.ALI RoboHelp Alias File 3.5
.ALL Java RMI Policy File 3.9
.ALL Cubasis Project File 3.2
.ALM Alpha Five Library 4.3
.ALP AnyLogic Project File 4.4
.ALP Ableton Live Pack File 4.2
.ALS Ableton Live Set File 4.7
.ALT Dynamics AX Temporary File 4.7
.ALV Adobe Photoshop Levels File 4.2
.ALX BlackBerry Application Loader XML File 4.7
.ALX ActiveX Layout Control File 4.5
.ALX Alpha Five Library Index File 3.5
.ALZ ALZip Archive 3.9
.AM1 Adventure Maker 4.5
.AM4 AutoPlay Media Studio 4 Project File 4
.AM5 AutoPlay Media Studio 5 Project File 4
.AM6 AutoPlay Media Studio 6 Project 4
.AM7 AutoPlay Media Studio 7 Project 4.3
.AMB All My Books Database File 4
.AMB AIMMS Model File 3.5
.AMC AMC Video File 4.5
.AMC Ant Movie Catalog File 4.5
.AMF Additive Manufacturing File 4.5
.AMF Advanced Module File 4
.AMFM Adobe Multiple Font Metrics File 4
.AML ACPI Machine Language File 4.6
.AML Arc Macro Language File 4.1
.AML Abstract Markup Language 3.9
.AML Microsoft Assistance Markup Language File 3.8
.AMM All My Movies Database File 4.5
.AMP Adobe Photoshop Curves Map File 3.8
.AMR Adaptive Multi-Rate Codec File 4.3
.AMS Adobe Monitor Setup file 3.8
.AMS Velvet Studio Module 3.5
.AMS Extreme Tracker Module 3.3
.AMSORM OnLine Ringman Auction Client File 4
.AMV Anime Music Video File 4
.AMX AMX Mod Plugin File 4.7
.AMX Adobe Motion Exchange File 4.2
.AMXD Ableton Max Patch File 4.5
.AMXX AMX Mod X Plugin File 4.7
.AMZ Amazon MP3 Downloader File 4
.AN Adobe Edge Animate Project File 3.8
.AN8 Anim8or File 4.5
.AN8 Vector NTI DNA File 4
.ANE Adobe AIR Native Extension 4.5
.ANG Anghami Audio File 4.5
.ANH Project ROME File 4
.ANI Windows Animated Cursor 4.7
.ANIM Maya Animation File 4.3
.ANIM Unity Animation File 4.2
.ANIM Amiga Animation File 3.5
.ANIM Antibody Animation File 3.2
.ANIMSET FaceFX Animation Set File 4
.ANM 3D Animation File 4.4
.ANME Anime Studio Document 4.3
.ANN Lingvo Dictionary Annotation File 3.8
.ANN Help Annotations 3.2
.ANS ANSI Text File 4.3
.ANS HotDocs Binary Answer File 3.5
.ANSYM Adobe Edge Animate Library File 3.5
.ANTISPAM5 Personal AntiSpam Settings File 4.5
.ANTMPL Adobe Edge Animate Template File 3.5
.ANX HotDocs Answer File 4.5
.ANX Annodex Exchange Format File 3.5
.ANY AnyRail Layout Plan 4
.AO ActionOutline Outline File 3.8
.AOB DVD-Audio Audio Object File 4.2
.AOD Dynamics AX Object Data File 4.5
.AOF Artlantis Object File 4
.AOI Art of Illusion 3D Scene 4.2
.AOI Dynamics AX Application Object Index File 3.5
.AOM After Effects Output Module 4
.AP Active Page 4.4
.AP ArtPro File 4
.AP_ ADT Android Developer Package 4.2
.APA RSView Development Project Archive 4.7
.APALBUM Aperture Album File 3.5
.APD Eclipse Plugin Descriptor File 4.3
.APD ACDSee Photo Document 4
.APE AVS Plugin Effects File 4.4
.APE Monkey's Audio Lossless Audio File 3.8
.APF Adobe Profile File 4.2
.APF Sony Ericsson Firmware Acoustics File 3.5
.API Adobe Photoshop Inks File 4.5
.API Acrobat Plug-in 4.2
.APK Android Package File 4.7
.APKG Exported Anki Flashcard Deck 4.2
.APL Monkey's Audio Track Information File 4.2
.APL ACDSee Plugin File 3.5
.APL ArcPad Layer File 3.5
.APLG Audials Plug-in 4
.APLIBRARY Aperture Library 4
.APLP Audials Plug-in Package 3.8
.APNG Animated Portable Network Graphic 4
.APNX Amazon Page Number Index File 4.5
.APP Mac OS X Application 4.5
.APP Symbian OS Application 4
.APP FoxPro Generated Application 3.8
.APPCACHE HTML5 Cache Manifest File 4.5
.APPDOWNLOAD Mac App Store Partially Downloaded App 4.8
.APPEX OS X Application and System Extension File 3.5
.APPLESCRIPT AppleScript File 4.4
.APPLET Eclipse Java Applet Policy File 4.5
.APPLICATION ClickOnce Deployment Manifest File 4.3
.APPREF-MS Microsoft Application Reference File 4.3
.APPUP Erlang Application Upgrade File 4
.APPX Windows 8 App Package 4.3
.APPXSYM Windows 8 App Package Symbols File 4.2
.APPXUPLOAD Windows 8 App Upload Package 3.9
.APR ArcView Project File 3.7
.APR Apadana Project File 3.5
.APS Visual C++ Resource File 4.3
.APS Greeting Card Studio Project File 3.5
.APT Almost Plain Text File 4.3
.APX Ability Photopaint Studio Image 3.8
.APXL Keynote Presentation Data File 3.5
.APZ Autoplay Media Studio Exported Project 4
.AQM AlpineQuest Map File 3.8
.AR Unix Static Library 4.6
.AR Midtown Madness Data File 4.4
.ARA Archivaldo Resource Archive 4.2
.ARC Norton Backup Archive 4.5
.ARC Compressed File Archive 4.5
.ARC African Safari Data File 4.2
.ARC Symbian OS Backup File 4
.ARC Nintendo Archive File 3.6
.ARCH00 F.E.A.R. Game Archive 4.5
.ARCHIVER Archiver Compressed File Archive 4
.ARCUT Prelude Rough Cut File 4
.ARD ArtiosCAD Workspace File 3.5
.ARF WebEx Advanced Recording File 4
.ARFF Attribute-Relation File Format 3.8
.ARG AutoCAD Profile 4.5
.ARI ARRIRAW Image 4.2
.ARI ARI Compressed File Archive 4
.ARIA2 aria2 Control File 4.5
.ARJ ARJ Compressed File Archive 4.2
.ARN Autoruns Data File 4
.ARO SteelArrow Web Application File 4
.ARP Advanced RAR Password Recovery Setup 4.8
.ARP Audition Replay File 4.5
.ARR Amber Graphic File 4.4
.ARR MultiMedia Fusion Array File 4.3
.ARR Advanced RAR Password Recovery Project 4.2
.ARS After Effects Render Settings File 4.2
.ARS Carmageddon Saved Game 3
.ARSC Android Package Resource File 4.6
.ART ArtCAM Model 4.2
.ART BERNINA Embroidery File 4
.ART AOL Compressed Image File 3.9
.ART Art Document 3.6
.ART Artifacts Artifact File 3.5
.ARTB Artboard Document 3.5
.ARTICLE Twixl Publisher Article 4.2
.ARTPROJ Artifacts Project 4
.ARW Sony Digital Camera Image 4.5
.ARW ArtStudio Image 4
.ARX AutoCAD Runtime Extension File 4.2
.AS ActionScript File 4.4
.AS AngelScript File 3.5
.AS AppleSingle File 3
.AS2PROJ FlashDevelop ActionScript 2 Project File 4.5
.AS3PROJ FlashDevelop ActionScript 3 Project File 4.5
.ASA ASP Configuration File 4.2
.ASAX ASP.NET Server Application File 4.8
.ASC Autodesk ASCII Export File 4.5
.ASC PGP ASCII Armored File 4.5
.ASC ActionScript Communication File 4.2
.ASC LTspice Circuit Schematic File 4.2
.ASC ASCII Text File 4.2
.ASCS ActionScript Communication Server File 3.5
.ASCX ASP.NET User Control File 4.7
.ASD Word AutoSave File 4.5
.ASD Ableton Live Sample Analysis File 4.3
.ASDB Asphyre Sphinx Archive File 4.2
.ASE Adobe Swatch Exchange File 4.2
.ASE Autodesk ASCII Scene Export File 4
.ASE Velvet Studio Sample 3.2
.ASEC Android Secure Application File 4.5
.ASEF Adobe Swatch Exchange File 4
.ASF Advanced Systems Format File 4.2
.ASHBAK Ashampoo Backup Archive 4
.ASHDISC Ashampoo Burning Studio Image 4.4
.ASHPRJ Ashampoo Burning Studio Project 3.8
.ASHX ASP.NET Web Handler File 4.3
.ASI Grand Theft Auto Mod Library 4.8
.ASI Alpha Five Variable File 4.6
.ASK askSam Database 4.5
.ASK Ableton Live Skin File 3.8
.ASL Photoshop Style 4.3
.ASM Assembly Language Source Code File 4.4
.ASM Pro/ENGINEER Assembly File 4.3
.ASM Visual Studio Assembler Source Code File 4.2
.ASM Solid Edge Assembly File 4
.ASMX ASP.NET Web Service File 4.2
.ASND Adobe Sound Document 4.2
.ASP Active Server Page 4.4
.ASP Adobe Color Separation Setup File 4.2
.ASPX Active Server Page Extended File 4.3
.ASR ActionScript Remote Document 4.4
.ASR Audio Streaming Resource Archive 4
.ASR Adobe Photoshop Scratch File 3
.ASS Aegisub Advanced Substation Alpha File 4.3
.ASS Splinter Cell Blacklist Game Data File 3.2
.ASSETPROJ Camtasia Studio Asset Information File 3.5
.ASSTRM Splinter Cell Blacklist Game Data File 4.2
.AST ClarisWorks Assistant File 4
.AST Adobe Color Separations Table 3.9
.AST Ability Spreadsheet Template 3.5
.ASV Finale Auto-save File 4
.ASV Adobe Photoshop Selective Color File 3.5
.ASVF Asphyre Sphinx Archive File 4.5
.ASVX Finale Auto-save File 4
.ASW ACDSee Slideshow Wizard File 3.6
.ASX Microsoft ASF Redirector File 4
.ASX Alpha Five Library Temporary Index File 3.6
.ASY Asymptote Module 4.2
.ASY LTspice Symbol File 4
.AT3 ATRAC3 Audio File 4.3
.AT5 Lowrance Map File 3.8
.ATC AutoCAD Tool Catalog File 3.8
.ATF Axon Text File 4.2
.ATF Alternativa Texture File 4
.ATF Photoshop Transfer Function File 3.5
.ATH Alienware AlienFX Theme File 3.5
.ATL Artlantis 3D Scene File 4.5
.ATM Vue Atmospheres File 4.5
.ATM PSP Game Audio File 3.2
.ATN Photoshop Actions File 4.6
.ATOM Atom Syndication Format 3.9
.ATS Advanced ETL Transformation Script 4
.ATT Web Form Post Data File 3.8
.ATT Alphacam Lathe Tool File 3.5
.ATTR iPhoto Attributes File 3.5
.ATX ArcGIS Attribute Index File 4
.ATX Animation Master Plugin File 3.5
.ATY Association Type Placeholder 3.5
.ATZ Atomic Time Zone File 4.6
.ATZ Aston Compiled Theme 4.5
.AU Audacity Audio File 4.7
.AU Audio File 4
.AU3 AutoIt v3 Script 4.5
.AUD Video Game Compressed Audio File 4.2
.AUP Audacity Project File 4.5
.AUTOPLAY AutoPlay Media Studio Project File 4
.AUTOSAVE Fusion Auto-save File 4.5
.AUX LaTeX Auxiliary File 4.5
.AUX Auxiliary File 4.2
.AUZ Ableton Authorization File 4.2
.AVASTLIC Avast! License File 4.5
.AVATAR Google Talk Avatar File 4.5
.AVB Microsoft Comic Chat Character 4
.AVB Avid Bin File 4
.AVC Kaspersky Virus Database 4.5
.AVC Avid Media Composer Script 3.5
.AVCHD High Definition Video File 4.3
.AVERY Avery Design & Print Online Label File 4.3
.AVGDX AVG Diagnostics File 3.5
.AVHD Hyper-V SnapShot File 4.5
.AVI Audio Video Interleave File 4.4
.AVL ArcView Legend File 4.5
.AVL AntiVir Status Report File 3.5
.AVP AntiVir Profile 4
.AVP Avid Project File 4
.AVS AVS Preset File 4.6
.AVS Avid Project Preferences File 4
.AVS Application Visualization System File 3.8
.AVS AviSynth Script File 3.6
.AVS Adobe Photoshop Variations File 3.5
.AVV Avid Volume Bin File 4
.AVX ArcView Extension File 4.9
.AVX Avid Plugin File 4.7
.AW Answer Wizard File 4.5
.AWBR WriteOnline WordBar File 4
.AWD Microsoft Fax Document 4
.AWD Award BIOS Update File 4
.AWD Artweaver Document 3.8
.AWDB Access Walker Database File 4
.AWG Ability Draw Document 3.5
.AWG Activeworlds Object Group File 3.5
.AWK AWK Script 4
.AWLIVE Active Webcam Video File 3.6
.AWM AllWebMenus Project File 4.5
.AWS AutoCAD Work Space File 4.2
.AWS Ability Spreadsheet File 3.8
.AWW Ability Write Document 4
.AX DirectShow Filter 4.3
.AXA Annodex Audio File 3.8
.AXD ASP.NET Web Handler File 4.5
.AXE AutoRoute Map File 4.2
.AXE Annotated XML Example File 3.8
.AXM AXMEDIS Object 4
.AXT Adobe Photoshop Extract File 4
.AXT Microsoft AutoRoute Template 3.5
.AXV Annodex Video File 3.5
.AXX AxCrypt Encrypted File 4.7
.AZF AirZip FileSECURE File 3.5
.AZS AirZip FileSECURE File 4.2
.AZW Amazon Kindle eBook File 4.5
.AZW1 Amazon Topaz eBook 3.8
.AZW2 Kindle Active Content App File 4
.AZW3 Amazon KF8 eBook File 4.3
.AZW4 Amazon Print Replica eBook 4.4
.AZZ AZZ Cardfile Database File 4.5
.AZZX Uncompressed AZZ Cardfile Data File 4.2