File extension	The full name of the file	Popularity
File extension A	Static Library
File extension A00	Split Multi-volume ARJ compressed file archive (part 2)
File extension A01	Split Multi-volume ARJ compressed file archive (part 3)
File extension A02	Split Multi-volume ARJ compressed file archive (part 4)
File extension A1WISH	Audials Wishlist File
File extension A26	Atari 2600 ROM image file
File extension A2B	Adlib Tracker II Instrument Bank
File extension A2C	Alice Scene file
File extension A2I	Adlib Tracker II Instrument File
File extension A2L	ASAP2 ECU Description File
File extension A2M	Adlib Tracker II File
File extension A2P	Adlib Tracker II Pattern File
File extension A2T	Adlib Tracker II Tiny Module File
File extension A2THEME	Aston 2 Theme File
File extension A2W	Alice World
File extension A3L	Authorware 3 Library
File extension A3M	Authorware 3 Macintosh File
File extension A3W	Authorware 3 Windows File
File extension A4L	Authorware 4 Library
File extension A4M	Authorware 4 Macintosh File
File extension A4P	A4Desk Pro Project File
File extension A4W	Authorware 4 Windows File
File extension A52	Atari 5200 ROM
File extension A5L	Authorware 5 Library
File extension A5W	Alpha Five Webpage File
File extension A65	Authorware 6.5 File
File extension A6P	Authorware 6 Program
File extension A8S	Anim8or Script
File extension AA	Audible Audio Book File
File extension AA3	Sony ATRAC audio file
File extension AAC	Advanced Audio Coding File
File extension AAF	Advanced Authoring Format multimedia file
File extension AAM	Authorware Map File
File extension AAO	Agenda At Once File
File extension AAUI	Acrobat User Interface File
File extension AAWDEF	Ad-Aware Definitions File
File extension AAX	Audible Enhanced Audiobook File
File extension AB	Google Android Debug Bridge backup file
File extension AB1	DNA Electropherogram File
File extension AB2	Print Shop Address Book File
File extension AB3	PhotoImpact 3 Album File
File extension ABA	Palm Address Book Archive
File extension ABBU	Address Book Backup
File extension ABC	ABC Music Notation
File extension ABCD	AudioVisual Book Data File
File extension ABDATA	Adobe Bridge Data File
File extension ABF	Analysis Services Backup File
File extension ABI	DNA Chromatogram File
File extension ABK	Automatic Backup File
File extension ABKPRJ	Ashampoo Backup Project
File extension ABM	Photo Album
File extension ABP	AVS Barcode Profile
File extension ABR	Adobe Photoshop Brushes File
File extension ABS	Absolute Database File
File extension ABW	AbiWord Document
File extension ABY	AOL Address Book File
File extension AC	AC3D geometry file
File extension AC$	AutoCAD Temporary File
File extension AC3	Audio Codec 3 File
File extension AC5	ArtCut 5 Document
File extension AC6	ArtCut 6 Document
File extension ACA	Agent Character Animation File
File extension ACB	Adobe Photoshop Color Book File
File extension ACBL	Adobe Color Book Legacy File
File extension ACC	Quicken 2002 internet common file
File extension ACCDA	Access Add-in File
File extension ACCDB	Access 2007 Database File
File extension ACCDC	Microsoft Access Signed Package
File extension ACCDE	Access Execute Only Database
File extension ACCDR	Access Runtime Application
File extension ACCDT	Microsoft Access Database Template
File extension ACCDU	Access Add-in File
File extension ACCDW	Microsoft Access Database Link File
File extension ACCFT	Microsoft Access Data Type Template
File extension ACCOUNTPICTURE-MS	Windows 8 Account Picture File
File extension ACD	ACID Project File
File extension ACD-BAK	Sony ACID Project Backup File
File extension ACD-ZIP	Sony ACID Project With Embedded Media File
File extension ACE	WinAce Compressed File
File extension ACF	Steam Application Cache File
File extension ACFM	Adobe Composite Font Metrics File
File extension ACG	Audio Comparer Group File
File extension ACL	AutoCorrect List File
File extension ACM	Interplay Audio File
File extension ACO	Adobe Photoshop Color Swatch File
File extension ACORN	Acorn Image
File extension ACP	Alfresco Content Package
File extension ACR	Bitmap graphics
File extension ACROBATSECURITYSETTINGS	Adobe Acrobat Security Settings File
File extension ACRODATA	Acrobat Data File
File extension ACROPLUGIN	Adobe Acrobat Plug-in
File extension ACS	Agent Character File
File extension ACSM	Adobe Content Server Message File
File extension ACT	ADPCM Compressed Audio File
File extension ACTION	Automator Action
File extension ACTM	AutoCAD Action Macro File
File extension ACTX	DS Game Maker Action Description File
File extension ACV	Photoshop Curves File
File extension ACW	Windows Accessibility Wizard File
File extension ACX	Atari ST Program
File extension AD	After Dark Screensaver
File extension ADA	Ada Source Code
File extension ADADOWNLOAD	Adobe Download Assistant Partial Download File
File extension ADB	Alpha Five Database File
File extension ADC	Scanstudio 16 Color Image
File extension ADCP	Adobe Device Central Project File
File extension ADD	Dynamics AX Developer Documentation File
File extension ADDIN	Visual Studio Add-in Definition File
File extension ADDON	CFS Console Add-on File
File extension ADE	Access Project Extension
File extension ADF	ArcView ARC/INFO coverage data file
File extension ADG	Ableton Device Group
File extension ADI	Active@ Disk Image Backup File
File extension ADM	Administrative Template File
File extension ADML	Microsoft administrative language-specific XML template file
File extension ADMX	Group Policy Administrative Template File
File extension ADN	Access Blank Project Template
File extension ADO	Adobe Photoshop Duotone Options File
File extension ADOX	ActivDox Document
File extension ADP	Access Project
File extension ADPP	Adobe Device Profile Package
File extension ADR	Opera Bookmarks File
File extension ADS	Ada Specification File
File extension ADT	ACT! Document Template
File extension ADTS	Audio Data Transport Stream File
File extension ADU	Addict User Dictionary File
File extension ADV	Nortek Acoustic Doppler Velocimeter File
File extension ADVS	Adobe Device Central Device Set
File extension ADX	Approach Index File
File extension ADZ	Compressed Amiga Disk File
File extension AEA	AdWords Editor Archive
File extension AEC	Cinema 4D After Effects Composition
File extension AEP	After Effects Project
File extension AEPKEY	Advanced Encryption Package Key File
File extension AEPX	After Effects XML Project
File extension AES	AES Crypt Encrypted File
File extension AET	After Effects Project Template
File extension AETX	After Effects XML Project Template
File extension AEX	Alpha Five Compiled Global Functions File
File extension AF2	Micrografx ABC FlowCharter 2 File
File extension AF3	Micrografx ABC FlowCharter 3/4 File
File extension AFC	Compressed audio interchange file format
File extension AFD	Alphacam Flame Drawing
File extension AFE	Avid File Exchange File
File extension AFF	AFF Disk Image
File extension AFM	Adobe Font Metrics File
File extension AFP	FileProtector Encrypted File
File extension AFPLOC	Apple Filing Protocol Location
File extension AFS	STAAD.foundation Project File
File extension AFT	Ancestry.com Family Tree Database
File extension AFX	Auto F/X Image format
File extension AGB	Game Boy Advance ROM
File extension AGD	AgileGraph Data File
File extension AGE3SCN	Age of Empires 3 Scenario File
File extension AGGR	Adobe Captivate Aggregate File
File extension AGI	Asterisk Gateway Interface File
File extension AGIF	Active GIF Creator Project
File extension AGM	DTS Multi-channel Pro Packer File
File extension AGP	ArtGem Project File
File extension AGR	Ableton Groove File
File extension AHD	Microsoft Dynamics AX On-line help data file
File extension AHI	Microsoft Dynamics AX online help index file
File extension AHK	AutoHotkey Script
File extension AHL	eMule Metadata File
File extension AHS	Adobe Halftone Screen File
File extension AHU	Adobe Photoshop HSL File
File extension AHX	WinAHX Tracker Module
File extension AI	Adobe Illustrator graphics file
File extension AIA	Adobe Illustrator Action File
File extension AIC	Advanced Image Coding File
File extension AIF	Audio Interchange File Format sound file
File extension AIFB	AIF Builder Project File
File extension AIFC	Compressed Audio Interchange File
File extension AIFF	Audio Interchange File Format
File extension AIM	AIMMS ASCII Model File
File extension AIMPPL	AIMP Playlist File
File extension AIN	Source Engine Compiled AI Nodegraph File
File extension AIP	Illustrator Plug-in
File extension AIR	Adobe AIR Installation Package
File extension AIS	ACDSee Image Sequence File
File extension AIT	Adobe Illustrator Template
File extension AIU	Advanced Installer Updates Configuration File
File extension AIV	AIVault Data File
File extension AJP	AJP Player video file
File extension AKP	Akai S5000, S6000 program file
File extension AL	A-Law Compressed Sound Format
File extension ALAC	Apple Lossless Audio Codec audio file
File extension ALAW	A-Law Compressed Sound Format
File extension ALB	Alpha Five Library
File extension ALBM	Photo album file
File extension ALC	Ableton Live Clip File
File extension ALD	Dynamics AX Application Label Data File
File extension ALE	Avid Log Exchange File
File extension ALF	ACT! Lookup File
File extension ALI	Dynamics AX Label Index File
File extension ALL	Cubasis Project File
File extension ALP	Ableton Live Pack File
File extension ALR	ADRIFT Language Resource File
File extension ALS	Ableton Live Set File
File extension ALT	Dynamics AX Temporary File
File extension ALV	Adobe Photoshop Levels File
File extension ALX	ActiveX Layout Control File
File extension ALZ	ALZip Archive
File extension AM	Automake Makefile Template
File extension AM1	Adventure Maker
File extension AM4	AutoPlay Media Studio 4 Project File
File extension AM5	AutoPlay Media Studio 5 Project File
File extension AM6	AutoPlay Media Studio 6 Project
File extension AM7	AutoPlay Media Studio 7 Project
File extension AMB	All My Books Database File
File extension AMC	AMC Video File
File extension AMF	Advanced Module File
File extension AMFM	Adobe Multiple Font Metrics File
File extension AML	Microsoft Assistance Markup Language
File extension AMM	Abbyy file
File extension AMP	Adobe Photoshop Curves Map File
File extension AMR	Adaptive Multi-Rate Codec File
File extension AMS	Adobe Monitor Setup file
File extension AMSORM	OnLine Ringman file
File extension AMU	Sony PictureGear Studio photo album file
File extension AMV	AMV video file format
File extension AMX	Adobe Motion Exchange File
File extension AMXD	Ableton Max Patch File
File extension AMXX	AMX Mod X plug-in file
File extension AMZ	Amazon MP3 Downloader file
File extension AN	Adobe Edge Animate Project File
File extension AN1	DeLorme Street Atlas drawing file
File extension AN2	Croc animation file
File extension AN8	Anim8or 3D animation file
File extension ANE	Adobe AIR Native Extension
File extension ANI	Animated cursor
File extension ANIM	Amiga animation file
File extension ANIMSET	FaceFX Animation Set File
File extension ANIMSET_INGAME	FaceFX In-Game Animation Set File
File extension ANJUTA	Anjuta IDE Project File
File extension ANM	3D Animation File
File extension ANME	Anime Studio project file
File extension ANN	Help Annotations
File extension ANNOT	Adobe Digital Editions Annotations File
File extension ANS	ANSI Text File
File extension ANSYM	Adobe Edge Animate Library File
File extension ANTISPAM5	Personal AntiSpam Settings File
File extension ANX	HotDocs answer file
File extension ANY	AnyRail Layout Plan
File extension AOB	DVD-Audio Audio Object File
File extension AOD	Microsoft Dynamics AX object data file
File extension AOF	Artlantis object file
File extension AOI	Art of Illusion 3D Scene
File extension AOIS	CFS Console Add-on Installer Settings File
File extension AOL	America On-line related file
File extension AOM	Adobe After Effects output settings file
File extension AOS	ARCHOS PCtablet Firmware File
File extension AP	Active Page
File extension APA	RSView Application Manager Archive
File extension APALBUM	Apple Aperture album file
File extension APD	ACDSee Photo Document
File extension APE	AVS Plugin Effects File
File extension APF	Adobe Profile File
File extension APH	Ability Photoalbum album database file
File extension API	Acrobat Plug-in
File extension APK	Google Android package file
File extension APL	ArcPad Layer File
File extension APLG	Audials One add-on file
File extension APLIBRARY	Aperture pictures library database file
File extension APLP	Audials One add-on installation package file
File extension APM	Aldus Placeable metafile
File extension APNG	Animated portable network graphics file
File extension APNX	Amazon Page Number Index File
File extension APP	Mac OS X Application
File extension APPDOWNLOAD	Mac App Store Partially Downloaded App
File extension APPLESCRIPT	AppleScript File
File extension APPLET	Eclipse Java Applet Policy File
File extension APPLICATION	ClickOnce Deployment Manifest File
File extension APPREF-MS	Application Reference file
File extension APPUP	Erlang Application Upgrade File
File extension APPX	Windows 8 App Package
File extension APPXSYM	Windows 8 App Package Symbols File
File extension APPXUPLOAD	Windows 8 App Upload Package
File extension APR	ArcView Project File
File extension APS	Visual C++ Resource File
File extension APT	Almost Plain Text File
File extension APX	Borland C++ appexpert database file
File extension APXL	Keynote Presentation Data File
File extension APZ	AMS shared project file
File extension AP_	ADT Android Developer Package
File extension AQM	AlpineQuest Map File
File extension AQT	AQTitle Subtitles File
File extension AR	Unix Static Library
File extension ARA	Archivaldo Resource Archive
File extension ARC	ARC lossless data compression and archive format
File extension ARCH00	F.E.A.R. Game Archive
File extension ARCUT	Adobe Prelude rough cut file
File extension ARD	ArtiosCAD Workspace File
File extension ARENA	Quake 3 Engine Arena File
File extension ARF	WebEx Advanced Recording File
File extension ARFF	Weka attribute-relation file
File extension ARG	AutoCAD Profile
File extension ARH	El Airplane game archive file
File extension ARI	ARRI raw image file
File extension ARIA	Chipsounds audio file
File extension ARIAX	Chipsounds XML Sound File
File extension ARJ	ARJ Compressed File Archive
File extension ARK	PowerDesk Pro Archive
File extension ARL	AOL Organizer File
File extension ARO	SteelArrow Web Application File
File extension ARP	Audition Replay File
File extension ARPACK	ArtRage Package
File extension ARR	Advanced RAR Password Recovery Project
File extension ARS	After Effects Render Settings File
File extension ARSC	Google Android resource file
File extension ARSCRIPT	ArtRage Script
File extension ART	Bernina Artista embroidery file
File extension ARTB	Artboard Document
File extension ARTPROJ	Artifacts Project
File extension ARTWORK	ArtStudio Image
File extension ARW	Sony Digital Camera Image
File extension ARX	AutoCAD Runtime Extension File
File extension AS	ActionScript File
File extension AS2PROJ	FlashDevelop project file
File extension AS3PROJ	FlashDevelop ActionScript 3 Project File
File extension AS4	askSam Backup File
File extension ASA	ASP Configuration File
File extension ASAT	Assemble SAT 3D Model File
File extension ASAX	ASP.NET application optional source file
File extension ASB	Alphacam Stone VB Macro File
File extension ASC	ASCII text file
File extension ASCII	ASCII Text File
File extension ASCS	ActionScript Communication Server File
File extension ASCX	ASP.NET User Control File
File extension ASD	Word AutoSave File
File extension ASDB	Asphyre Sphinx Archive File
File extension ASE	Adobe Swatch Exchange File
File extension ASEC	Android Secure Application File
File extension ASF	Advanced Systems (streaming) format
File extension ASH	Audiosurf Audio Metadata File
File extension ASHBAK	Ashampoo Backup Archive
File extension ASHDISC	Ashampoo Burning Studio Image
File extension ASHPRJ	Ashampoo Burning Studio Project
File extension ASHX	ASP.NET Web Handler file
File extension ASI	Alpha Five Variable File
File extension ASK	askSam Database
File extension ASL	Photoshop Style
File extension ASM	Assembler source code file
File extension ASMX	ASP.NET Web Service File
File extension ASND	Adobe Sound Document
File extension ASP	Active Server Page
File extension ASPX	Active Server Page Extended File
File extension ASR	ActionScript Remote Document
File extension ASS	Aegisub Advanced Substation Alpha File
File extension ASSET	Unity Asset File
File extension AST	Adobe Color Separations Table
File extension ASV	Adobe Photoshop Selective Color File
File extension ASVF	Asphyre Sphinx Archive File
File extension ASW	ACDSee Slideshow Wizard File
File extension ASWCS	Avast! Compressed Skin File
File extension ASWS	Avast! Skin File
File extension ASX	Microsoft Advanced Streaming Redirector file
File extension ASY	Asymptote Module
File extension AT3	ATRAC3 Audio File
File extension AT5	Lowrance Map File
File extension ATAHD	ATA Hard Drive Flag File
File extension ATC	AutoCAD catalog file
File extension ATE	Office Accounting Compressed Backup File
File extension ATF	Axon Text File
File extension ATH	Alienware AlienFX Theme File
File extension ATI	Office Accounting Updated Company File
File extension ATL	Artlantis 3D Scene File
File extension ATM	Vue Atmospheres File
File extension ATN	Photoshop Actions File
File extension ATOM	Atom web feed file
File extension ATR	Atari Disk Image
File extension ATRAC	Sony ATRAC Audio File
File extension ATS	Advanced ETL Transformation Script
File extension ATT	Web Form Data file
File extension ATTR	iPhoto Attributes File
File extension ATX	ArcGIS Attribute Index File
File extension ATY	Association Type Placeholder
File extension ATZ	Aston Compiled Theme
File extension AU	Audio File
File extension AU3	AutoIt v3 Script
File extension AUD	Video Game Compressed Audio File
File extension AUP	Audacity Project File
File extension AUT	AutoIt Script File
File extension AUTOMATICDESTINATIONS-MS	Windows Jump List File
File extension AUTOPLAY	AutoPlay Media Studio Project File
File extension AUX	TeX/LaTeX auxiliary references file
File extension AUZ	Ableton Authorization File
File extension AVA	AvaaBook eBook
File extension AVASTLIC	Avast! License File
File extension AVASTSOUNDS	Avast! Soundpack File
File extension AVATAR	Google Talk Avatar File
File extension AVB	Avid Bin File
File extension AVC	MPEG-4 AVC Advanced Video Coding movie file
File extension AVCHD	High Definition Video File
File extension AVD	MAGIX Movie Edit Pro video data file
File extension AVE	Avid User File
File extension AVENIRPROJ	StoryMill Project
File extension AVERY	Avery Design & Print Online Label File
File extension AVGDX	AVG Diagnostics File
File extension AVHD	Hyper-V SnapShot File
File extension AVI	Audio Video Interleave File
File extension AVJ	Avira Anti-Vir job file
File extension AVL	ArcView Legend File
File extension AVP	Avid Project File
File extension AVR	Audio Visual Research File
File extension AVS	AviSynth Script File
File extension AVV	Avid Volume Bin File
File extension AVX	ArcView Extension plugin file
File extension AW	Answer Wizard File
File extension AWB	AMR-WB Audio File
File extension AWC	Emulex AWC Firmware Update File
File extension AWCAV	ActiveWorlds Custom Avatar File
File extension AWD	Microsoft Fax Document
File extension AWDB	Access Walker Database File
File extension AWG	Activeworlds Object Group File
File extension AWK	AWK Script
File extension AWKW	Awkwords Word Generator File
File extension AWLIVE	Active Webcam Video File
File extension AWM	AllWebMenus Project File
File extension AWP	Ability Write Template
File extension AWS	Ability Spreadsheet File
File extension AWT	AbiWord Template
File extension AWW	Ability Write Document
File extension AX	DirectShow Filter
File extension AXD	ASP.NET Web Handler File
File extension AXE	Microsoft Autoroute map file
File extension AXM	AXMEDIS Object
File extension AXP	CDBurnerXP Audio Compilation File
File extension AXT	Adobe Photoshop Extract File
File extension AXX	AxCrypt Encrypted File
File extension AY	AY Chiptune File
File extension AZ!	Vuze Partial Download File
File extension AZF	Secure format file
File extension AZS	AirZip FileSECURE File
File extension AZW	Amazon Kindle eBook File
File extension AZW1	Amazon Topaz eBook
File extension AZW2	Kindle Active Content App File
File extension AZW3	Amazon KF8 eBook File
File extension AZW4	Amazon Print Replica eBook
File extension AZZ	AZZ Cardfile Database File
File extension AZZX	Uncompressed AZZ Cardfile Data File