| Extension | File Type | File Description |
|---|---|---|
| A | Programming Files | Static Library |
| A | Programming Files | Ada programming language source code file |
| A | Game Files | Hellhog XP game archive |
| A00 | Archive Files | ALZip Second Split Archive File |
| A01 | Archive Files | ALZip Third Split Archive File |
| A02 | Archive Files | ALZip Fourth Split Archive File |
| A11 | Miscellaneous Files | |
| A14 | Archive Files | |
| A26 | Game Files | Atari 2600 ROM |
| A2C | 3D Graphics Files | Alice Object File |
| A2M | Audio Files | AdLib Tracker 2 File |
| A2M | Settings Files | TS-AudioToMIDI Settings File |
| A2THEME | Settings Files | Aston 2 Theme File |
| A2W | Programming Files | Alice World |
| A31 | Data Files | Adobe Authorware library file |
| A52 | Audio Files | Dolby Digital Audio File |
| A52 | Game Files | Atari 5200 ROM |
| A64 | Raster Image Files | |
| A64 | Text Files | |
| A6L | Miscellaneous Files | |
| A6P | Executable Files | Authorware 6 Program |
| A8S | 3D Graphics Files | Anim8or Script |
| AA | Audio Files | Audible Audio Book File |
| AA | Document Files | Automated Analyst document file |
| AA | Disk Image Files | Generic CD Image |
| AA3 | Audio Files | ATRAC Audio File |
| AAA | Database Files | Sybase SQLAnywhere temporary file |
| AAC | Audio Files | Advanced Audio Coding File |
| AAE | Settings Files | Apple sidecar file |
| AAF | Audio Files | |
| AAF | Data Files | |
| AAR | Archive Files | |
| AAS | Data Files | |
| AAS | Game Files | |
| AAS | Raster Image Files | |
| AAS | Data Files | Archos signed encrypted data |
| AAWDEF | Miscellaneous Files | Ad-Aware Definitions File |
| AAX | Audio Files | Audible Enhanced Audiobook File |
| AB | Data Files | DNA Sequence File |
| AB | Audio Files | Ambling BookPlayer MP3 File |
| AB | Backup Files | Android ADB Backup File |
| AB! | Data Files | ABI chromatograms file |
| AB1 | Data Files | DNA Electropherogram File |
| AB1 | Binary Files | ABIF file format |
| AB2 | Data Files | Print Shop Address Book File |
| ABA | Archive Files | Palm Address Book Archive |
| ABA | Data Files | Avant Browser Add-on File |
| ABC | Programming Files | ABC Source File |
| ABC | Audio Files | ABC Music Notation |
| ABC | Data Files | ACT! E-mail Address Book |
| ABC | Game Files | LithTech game engine 3D model file |
| ABC | Programming Files | ActionScript Byte Code File |
| ABC | Vector Graphics Files | Micrografx ABC FlowCharter 6 File |
| ABCD | Audio Files | AudioVisual Book Data File |
| ABF | Backup Files | Analysis Services Backup File |
| ABF | Font Files | Adobe Binary Screen Font File |
| ABF | Data Files | Altair Binary Format |
| ABI | Data Files | DNA Chromatogram File |
| ABI | Plugin Files | AbiWord Plug-in |
| ABK | Backup Files | Automatic Backup File |
| ABK | Game Files | Need for Speed Underground Audio File |
| ABM | Audio Files | Music Album |
| ABM | Raster Image Files | Photo Album |
| ABOOK | Data Files | address book files |
| ABP | Settings Files | |
| ABR | Miscellaneous Files | Adobe Photoshop Brushes File |
| ABS | Settings Files | Avant Browser skin file |
| ABS | Game Files | AB SuDoKu save game |
| ABS | Raster Image Files | Optocat picture format |
| ABS | Settings Files | Absolute Packager configuration file |
| ABS | Database Files | Absolute Database File |
| ABW | Document Files | AbiWord Document |
| ABX | Settings Files | Corel WordPerfect Mail address book file |
| ABY | Data Files | AOL Address Book File. |
| AC | Text Files | AC3D geometry file |
| AC | Miscellaneous Files | Mopac Cartesian chemical modeller output file |
| AC | 3D Graphics Files | ACwin project file |
| AC | Data Files | Working Papers client file |
| AC | Executable Files | Autoconf Script |
| AC | Settings Files | GLPK automake/autoconf configure definitions file |
| AC$ | Miscellaneous Files | AutoCAD Temporary File |
| AC3 | Audio Files | Audio Codec 3 File |
| AC5 | Vector Graphics Files | ArtCut 5 Document |
| AC6 | Vector Graphics Files | Artcut software graphics design file |
| AC6 | Vector Graphics Files | ArtCut 6 Document |
| AC6 | Miscellaneous Files | SPICE AC/frequence domain output file |
| ACA | Data Files | Agent Character Animation File |
| ACAD | Miscellaneous Files | |
| ACAD | Database Files | |
| ACB | Data Files | Adobe Photoshop Color Book File |
| ACB | Archive Files | AOL Cab Launcher |
| ACB | Settings Files | AutoCAD Color Book File |
| ACBL | Settings Files | Adobe Color Book Legacy File |
| ACC | Data Files | Graphics Accounts Data File |
| ACC | Raster Image Files | |
| ACC | Executable Files | Atari ST program executable file |
| ACC | Document Files | Accent Duo document file |
| ACC | Miscellaneous Files | DR DOS - ViewMax file |
| ACC | Image Files | MS Image Composer |
| ACC | Image Files | Graphic Accounts account data file |
| ACCDA | Plugin Files | Access Add-in File |
| ACCDB | Document Files | Access 2007 Database File |
| ACCDC | Database Files | Microsoft Access Signed Package |
| ACCDE | Database Files | Access Execute Only Database |
| ACCDR | Database Files | Access Runtime Application |
| ACCDT | Database Files | Microsoft Access Database Template |
| ACCDU | Document Files | |
| ACCDW | Database Files | Microsoft Access Database Link File |
| ACCESS | System Files | Java access control file |
| ACCFT | Database Files | |
| ACD | Audio Files | ACID Project File |
| ACD | Programming Files | RSLogix 5000 Program |
| ACD | Data Files | Chromeleon channel raw data file |
| ACD-BAK | Audio Files | Sony ACID Project Backup File |
| ACD-ZIP | Audio Files | Sony ACID Project With Embedded Media File |
| ACE | Archive Files | WinAce Compressed File |
| ACE | Raster Image Files | ACE Texture File |
| ACE | Game Files | Train Simulator Texture File |
| ACF | Game Files | Steam Application Cache File |
| ACF | Game Files | X-Plane description file |
| ACF | Data Files | Agent Character Data File |
| ACF | Settings Files | Adobe Photoshop Custom Filter File |
| ACFM | Font Files | Adobe Composite Font Metrics File |
| ACG | Data Files | |
| ACG | Game Files | |
| ACH | Data Files | Payroll Mate automated clearing house file |
| ACL | Miscellaneous Files | AutoCorrect List File |
| ACL | Programming Files | ArchiCrypt Live secured data file |
| ACL | Data Files | RaidenFTPD rights file |
| ACL | Miscellaneous Files | CorelDRAW Keyboard accelerator file |
| ACM | Audio Files | Interplay Audio File |
| ACM | System Files | Windows system directory files |
| ACMB | Raster Image Files | |
| ACO | Raster Image Files | Adobe color palette and swatches file |
| ACO | 3D Graphics Files | ArCon project file |
| ACO | Settings Files | Adobe Photoshop Color Swatch File |
| ACORN | Vector Graphics Files | |
| ACP | Backup Files | Alfresco Content Package |
| ACP | Programming Files | EditPlus Auto-Completion File |
| ACP | Audio Files | aacPlus Audio File |
| ACP | Data Files | ArCon Project Files |
| ACP | Data Files | TCPDUMP's style capture files |
| ACR | Raster Image Files | American College of Radiology File |
| ACR | Executable Files | ACRobot Script |
| ACROBATSECURITYSETTINGS | Settings Files | Adobe Acrobat Security Settings File |
| ACRODATA | Settings Files | Acrobat Data File |
| ACROPLUGIN | Plugin Files | Adobe Acrobat Plug-in |
| ACS | Miscellaneous Files | Agent Character File |
| ACSM | Data Files | Adobe Content Server Message File |
| ACT | Data Files | FoxPro action diagrams |
| ACT | Game Files | Train Simulator activity file |
| ACT | Audio Files | ADPCM Compressed Audio File |
| ACT | 3D Graphics Files | Genesis3D Actor File |
| ACT | Settings Files | Adobe Color Table File |
| ACTION | Programming Files | Mac OS X Automator action file |
| ACTM | Executable Files | AutoCAD Action Macro File |
| ACTX | Programming Files | DS Game Maker Action Description File |
| ACV | Raster Image Files | Adobe Photoshop colour curves file |
| ACV | Settings Files | Photoshop Curves File |
| ACV | System Files | Compress and decompress audio data |
| ACV | Miscellaneous Files | FreeBSD file |
| ACW | Settings Files | Windows Accessibility Wizard File |
| ACX | Game Files | Atari ST Program |
| AD | Miscellaneous Files | After Dark Screensaver |
| AD2 | Audio Files | |
| AD3 | Audio Files | |
| ADA | Document Files | ActiveDocs Opus document file |
| ADA | Audio Files | Advanced Digital Audio compressed audio files |
| ADA | Programming Files | Ada Source Code |
| ADADOWNLOAD | Miscellaneous Files | Adobe Download Assistant Partial Download File |
| ADB | Database Files | Ability Database File |
| ADB | Page Layout Files | Now Contact Address Book Template |
| ADB | Programming Files | Ada Body File |
| ADB | Database Files | Alpha Five Database File |
| ADC | Text Files | Lingvo dictionary file |
| ADC | Miscellaneous Files | ClearSight Analyzer related file |
| ADC | Image Files | Scanstudio 16 Color Image |
| ADC | Data Files | Data file |
| ADC | Document Files | ActiveDocs Clipping Catalog |
| ADC | Data Files | XemiComputers Active Desktop Calendar Files |
| ADC | Miscellaneous Files | Xmap output file |
| ADC | Miscellaneous Files | SMS evaluator addition file |
| ADD | Raster Image Files | Adobe PageMaker related file |
| ADD | 3D Graphics Files | Alphacam die-cut drawing file |
| ADD | Database Files | Advantage Database Server data file |
| ADD | Miscellaneous Files | Dynamics AX Developer Documentation File |
| ADD | Data Files | Microsoft Dynamics AX developer documentation file |
| ADD | Plugin Files | Athena service configuration tool add file |
| ADDIN | Programming Files | Visual Studio Add-in Definition File |
| ADDON | Plugin Files | CFS Console Add-on File |
| ADE | Data Files | Access Project Extension |
| ADF | Disk Image Files | Amiga Disk File |
| ADF | Data Files | ESRI ArcInfo Binary Grid Format |
| ADF | Database Files | ACT! Data File |
| ADG | Audio Files | Ableton Device Group |
| ADH | Data Files | Audible Manager file. |
| ADI | Raster Image Files | AutoCAD Device-Independent Binary Plotter File |
| ADI | Miscellaneous Files | Dynamics AX Developer Documentation Index File |
| ADI | Backup Files | Active@ Disk Image Backup File |
| ADL | Game Files | |
| ADL | Settings Files | openEHR Archetype Definition Language |
| ADL | Text Files | ADONIS Models and Model Groups export file |
| ADL | Audio Files | |
| ADL | Data Files | |
| ADM | Data Files | Addict compiled dictionary file |
| ADM | Settings Files | Adobe Creative Suite application bar |
| ADM | System Files | Administrative Template File |
| ADM | Game Files | NovaLogic game animation data map file |
| ADM | 3D Graphics Files | Alphacam die-cut parameter macro file |
| ADML | System Files | Group Policy Language-Specific Administrative Template |
| ADMX | Settings Files | Microsoft administrative XML template file. |
| ADMX | System Files | Group Policy Administrative Template File |
| ADN | Document Files | |
| ADN | Plugin Files | |
| ADO | Settings Files | Adobe Photoshop Duotone Options File |
| ADO | Miscellaneous Files | Stata related file |
| ADOBEBRIDGE | Data Files | |
| ADP | Web Files | AOLserver Dynamic Page file |
| ADP | Executable Files | Microsoft Access project file |
| ADP | 3D Graphics Files | Alphacam die-cut post file |
| ADR | Web Files | Opera Bookmarks File |
| ADS | Programming Files | Ada Specification File |
| ADT | Database Files | Casio Pocket Viewer Add-in Data file |
| ADT | Data Files | |
| ADT | Text Files | |
| ADT | Document Files | |
| ADT | Game Files | |
| ADT | Database Files | Advantage Data Server table |
| ADTS | Audio Files | Audio Data Transport Stream File |
| ADV | Audio Files | Ableton Device Preset File |
| ADX | Database Files | Lotus Approach database index |
| ADZ | Disk Image Files | Compressed Amiga Disk File |
| AEA | Backup Files | AdWords Editor Archive |
| AEA | Settings Files | Ae Timer Alarm Document |
| AEA | Audio Files | MD STUDIO audio |
| AEC | 3D Graphics Files | DataCAD drawing file |
| AEF | 3D Graphics Files | ELECTRICAL Designer related file |
| AEF | Data Files | Visual Objects application export file |
| AEF | Programming Files | Cisco Unity Express script |
| AEP | Video Files | After Effects Project |
| AEP | Programming Files | Activ E-Book Project |
| AEP | Document Files | ArcExplorer project file |
| AEPX | Video Files | After Effects XML Project |
| AET | Video Files | After Effects Project Template |
| AETX | Video Files | After Effects XML Project Template |
| AEX | Web Files | Alpha Five Compiled Global Functions File |
| AEX | Encrypted Files | Armored extracted public encryption key |
| AEX | Raster Image Files | Greetings card file |
| AF2 | Vector Graphics Files | Micrografx ABC FlowCharter 2 File |
| AF3 | Vector Graphics Files | Micrografx ABC FlowCharter 3/4 File |
| afa | Miscellaneous Files | |
| AFC | Audio Files | Mass Effect 2 Audio File |
| AFD | CAD Files | Alphacam Flame Drawing |
| AFD | Disk Image Files | AFF Disk Image Part File |
| AFD | Document Files | ArisFlow flowchart diagram file |
| AFF | Data Files | Mozilla Firefox dictionary file |
| AFF | Vector Graphics Files | Acorn vector draw file |
| AFF | Document Files | AnyForm form file |
| AFF | Disk Image Files | AFF Disk Image |
| AFF | Miscellaneous Files | Nvu file |
| AFI | Raster Image Files | |
| AFL | Game Files | X-Plane file |
| AFL | Miscellaneous Files | |
| AFL | Font Files | |
| AFM | Font Files | Adobe Font Metrics File |
| AFM | Data Files | |
| AFM | 3D Graphics Files | Alphacam flame parameter macro file |
| AFM | Miscellaneous Files | Lout document formatting system |
| AFM | Disk Image Files | AFF Metadata File |
| AFP | Encrypted Files | FileProtector Encrypted File |
| AFP | Miscellaneous Files | XMap flight plan (statistic) file |
| AFP | 3D Graphics Files | Alphacam flame post file |
| AFP | Document Files | Advanced Function Presentation File |
| AFS | CAD Files | STAAD.foundation Project File |
| AFS | Miscellaneous Files | STAAD.foundation project file |
| AFS | Font Files | Adobe Type Manager font set. |
| AFS | Settings Files | AktivFilter specification application file |
| AFS | Audio Files | Sega Dreamcast compressed audio file |
| AFS | Miscellaneous Files | Aire Freshener schedule file |
| AFT | Data Files | Ancestry.com Family Tree Database |
| AFW | Miscellaneous Files | |
| AFX | Raster Image Files | Auto FX Photo/Graphic Edges Image |
| AGE3SCN | Game Files | Age of Empires 3 Scenario File |
| AGI | Programming Files | Asterisk Gateway Interface File |
| AGIF | Raster Image Files | Active GIF Creator Project |
| AGM | Audio Files | DTS Multi-channel Pro Packer File |
| AGP | Raster Image Files | ArtGem Project File |
| AGR | Raster Image Files | APM Graph vector graphic file |
| AGR | Miscellaneous Files | AepGraph file |
| AGR | Document Files | Grace project file |
| AHD | Miscellaneous Files | Dynamics AX Online Help Data File |
| AHI | Miscellaneous Files | Dynamics AX Online Help Index File |
| AHK | Executable Files | AutoHotkey Script |
| AHL | Settings Files | eMule Metadata File |
| AHS | Settings Files | Adobe Halftone Screen File |
| AHS | Miscellaneous Files | |
| AHS | Raster Image Files | |
| AHU | Settings Files | Adobe Photoshop HSL File |
| AHU | Miscellaneous Files | Adobe Photoshop file |
| AHX | Audio Files | Amiga THX Tracker Music File |
| AHX | Audio Files | WinAHX Tracker Module |
| AI | Vector Graphics Files | Adobe Illustrator File |
| AI | Game Files | Battlefield 2 Artificial Intelligence File |
| AI | Archive Files | Ai Archivator compressed archive |
| AIA | Settings Files | Adobe Illustrator Action File |
| AIC | Raster Image Files | Advanced Image Coding File |
| AIF | Audio Files | Audio Interchange File Format |
| AIF | Miscellaneous Files | |
| AIF | Data Files | |
| AIFC | Audio Files | Compressed Audio Interchange File |
| AIFF | Audio Files | Audio Interchange File Format |
| AIM | Text Files | |
| AIM | Data Files | |
| AIN | Archive Files | AIN Compressed File Archive |
| AIN | Database Files | |
| AIN | Game Files | Source Engine Compiled AI Nodegraph File |
| AIP | Game Files | Nova Logic game AI perimeters file |
| AIP | Game Files | ROSE Online AI file |
| AIP | Plugin Files | Illustrator Plug-in |
| AIP | Miscellaneous Files | Advanced Installer project file |
| AIPD | Miscellaneous Files | |
| AIR | Game Files | M.U.G.E.N. Animation File |
| AIR | Executable Files | Adobe AIR Installation Package |
| AIR | Data Files | SeeYou airspace file |
| AIS | Audio Files | Velvet Studio Instrument |
| AIS | Image Files | ACDSee Image Sequence File |
| AIT | Settings Files | Adobe Illustrator Template |
| AIX | Data Files | |
| AJP | 3D Graphics Files | Alphacam water jet post file |
| AJP | Audio Files | CCTV Video File |
| AJP | Raster Image Files | Anfy (Java) Applet Generator saved file |
| AKP | Audio Files | Akai Sampler File |
| AL | Audio Files | A-Law Compressed Sound Format |
| ALA | Miscellaneous Files | |
| ALAC | Audio Files | ALAC Encoded Audio File |
| ALAW | Audio Files | A-Law Compressed Sound Format |
| ALB | Programming Files | Alpha Five data dictionary |
| ALB | Raster Image Files | Diji Album File |
| ALB | Data Files | Chief Architect library file |
| ALB | Image Files | Web Easy image file |
| ALB | Audio Files | Steinberg Cubase backup song file |
| ALBM | Raster Image Files | HP Photo Printing Software Album File |
| ALC | Data Files | |
| ALC | Audio Files | |
| ALC | Data Files | Acucorp ACUCOBOL-GT license file |
| ALE | Video Files | Avid Log Exchange File |
| ALF | Database Files | ACT! Lookup File |
| ALG | 3D Graphics Files | |
| ALG | Image Files | |
| ALG | Programming Files | |
| ALIAS | Image Files | Alias image file |
| ALIAS | Data Files | Find and Run Robot (FARR) alias |
| ALL | Audio Files | Cubasis Project File |
| ALL | Data Files | AlligatorSQL project file |
| ALL | Document Files | Lotus 1-2-3 always working page format file |
| ALL | Font Files | Arts & Letters library file |
| ALL | Settings Files | Java RMI Policy File |
| ALL | Settings Files | Corel WordPerfect general printer information file |
| ALN | Miscellaneous Files | |
| ALO | Game Files | |
| ALP | Plugin Files | Ableton Live Pack File |
| ALP | Programming Files | AnyLogic Project File |
| ALPHA | Miscellaneous Files | |
| ALR | Game Files | ADRIFT Language Resource File |
| ALR | Miscellaneous Files | |
| ALS | Image Files | Alias fmage file |
| ALS | Audio Files | Ableton Live Set File |
| ALS | Temporary Files | Pro/ENGINEER temporary file |
| ALS | Miscellaneous Files | Schematics alias file |
| ALS | Game Files | Arcade Lines graphic resource file |
| ALS | Data Files | |
| ALT | Miscellaneous Files | Dynamics AX Temporary File |
| ALV | Settings Files | Adobe Photoshop Levels File |
| ALX | Data Files | Aldfaer file |
| ALX | Web Files | ActiveX Layout Control File |
| ALX | Programming Files | Alpha Five database information file |
| ALX | Video Files | BlackBerry application loader file |
| ALX | Plugin Files | OM2 OMALI plug-in |
| ALX | Settings Files | BlackBerry Application Loader XML File |
| ALX | Web Files | Internet script language defines 2-D layout ActiveX layout file |
| ALZ | Archive Files | ALZip Archive |
| ALZ | Game Files | |
| AM | 3D Graphics Files | Anark Studio media file |
| AM | Data Files | Advantage Database Server file |
| AM | Settings Files | Applix SHELF macro |
| AM | Settings Files | GLPK automake/autoconf makefile definitions file |
| AM | Video Files | Anark Media File |
| AM1 | Game Files | Adventure Maker |
| AM4 | Programming Files | AutoPlay Media Studio 4 Project File |
| AM5 | Programming Files | AutoPlay Media Studio 5 Project File |
| AM6 | Programming Files | AutoPlay Media Studio 6 Project |
| AM7 | Programming Files | AutoPlay Media Studio 7 Project |
| AMD | Audio Files | AMUSIC AdLib Tracker file |
| AMD | Data Files | ABBYY Finereader Pro file |
| AMD | Data Files | ASCET XML model description file |
| AMD | 3D Graphics Files | Alphacam 3D Mill, 2D Mill drawing file |
| AME | Data Files | |
| AMF | 3D Graphics Files | Additive Manufacturing File |
| AMF | Audio Files | Advanced Module File |
| AMF | Emulator Files | Amiga metafile |
| AMFM | Font Files | Adobe Multiple Font Metrics File |
| AMI | Raster Image Files | |
| AMI | Data Files | |
| AMI | Binary Files | |
| AML | Image Files | Morpheus Photo Morpher project file |
| AML | Miscellaneous Files | Microsoft Assistance Markup Language File |
| AML | Programming Files | Abstract Markup Language |
| AML | Programming Files | Arc Macro Language File |
| AMO | Plugin Files | |
| AMP | Settings Files | Adobe Photoshop Curves Map File |
| AMP | Miscellaneous Files | RMCProfile file |
| AMP | 3D Graphics Files | Alphacam 3D Mill, 2D Mill post file |
| AMR | Audio Files | Adaptive Multi-Rate Codec File |
| AMS | Settings Files | Adobe Monitor Setup file |
| AMS | Audio Files | Velvet Studio Module |
| AMSORM | Miscellaneous Files | |
| AMT | Miscellaneous Files | Abbyy Finereader 5.0 Pro file |
| AMT | Game Files | ArtMoney table file |
| AMT | 3D Graphics Files | |
| AMV | Video Files | Anime Music Video File |
| AMX | Video Files | Adobe Motion Exchange File |
| AMX | Plugin Files | AMX Mod Plugin File |
| AMXD | Audio Files | Ableton Max Patch File |
| AMXX | Plugin Files | AMX Mod X Plugin File |
| AMZ | Miscellaneous Files | Amazon MP3 Downloader File |
| AN2 | Game Files | Croc Legend of the Gobbos Animation File |
| AN2 | Data Files | AceNotes PIM data file |
| AN8 | 3D Graphics Files | Anim8or File |
| ANI | System Files | Windows Animated Cursor |
| ANIM | Image Files | Maya Animation File. |
| ANIM | Game Files | |
| ANIM | Video Files | Amiga Animation File |
| ANIM | Image Files | Unity Animation File |
| ANIM | Image Files | Antibody Animation File |
| ANJUTA | Programming Files | Anjuta IDE Project File |
| ANM | Programming Files | Infinity equation script file |
| ANM | 3D Graphics Files | 3D Animation File |
| ANN | Data Files | |
| ANN | System Files | Help Annotations |
| ANNOT | Miscellaneous Files | Adobe Digital Editions Annotations File |
| ANS | Document Files | HotDocs Binary Answer File |
| ANS | Text Files | ANSI Text File |
| ANS | Data Files | ANSYS model data |
| ANV | Miscellaneous Files | |
| ANX | Document Files | HotDocs Answer File |
| ANY | CAD Files | AnyRail Layout Plan |
| ANYDVD | Settings Files | SlySoft ANYDVD file |
| AOB | Video Files | DVD-Audio Audio Object File |
| AOD | Miscellaneous Files | Dynamics AX Object Data File |
| AOI | Miscellaneous Files | Dynamics AX Application Object Index File |
| AOIS | Settings Files | CFS Console Add-on Installer Settings File |
| AOL | Miscellaneous Files | America Online File |
| AOS | Plugin Files | Nokia phone add-on software |
| AOS | System Files | ARCHOS PCtablet Firmware File |
| AP | Web Files | Active Page |
| APA | Programming Files | RSView Development Project Archive |
| APA | Image Files | ArcPad applet file |
| APA | Document Files | AlfaPad Notes Organizer document file |
| APALBUM | Data Files | Aperture Album File |
| APB | 3D Graphics Files | |
| APB | Backup Files | |
| APB | Data Files | |
| APC | Data Files | Gupta Team Developer compiled application file |
| APC | Data Files | AiroPeek wireless trace capture file |
| APC | Settings Files | Lotus printer driver characters |
| APC | Audio Files | Cryo Interactive APC audio file |
| APD | 3D Graphics Files | |
| APD | System Files | |
| APD | Miscellaneous Files | |
| APE | Audio Files | Monkey's Audio Lossless Audio File |
| APE | Plugin Files | AVS Plugin Effects File |
| APF | Miscellaneous Files | Adobe Profile File |
| APF | Audio Files | Sony Ericsson Firmware Acoustics File |
| API | Plugin Files | Acrobat Plug-in |
| API | Settings Files | Lotus Printer Driver File |
| API | Web Files | Apple WebObjects Interface File |
| APK | Archive Files | Google Android Package File |
| APL | Audio Files | Monkey's Audio Track Information File |
| APL | Plugin Files | ACDSee Plugin File |
| APL | Programming Files | APL workspace |
| APL | GIS Files | ArcPad Layer File |
| APM | Raster Image Files | Aldus Placeable Metafile Image |
| APM | 3D Graphics Files | Alphacam punch parameter macro |
| APM | Video Files | |
| APM | Settings Files | AMS configuration file |
| APM | GIS Files | ArcPad ver.6 related file |
| APM | Data Files | Adobe Authorware file |
| apng | Miscellaneous Files | |
| APNX | Miscellaneous Files | Amazon Page Number Index File |
| APP | Executable Files | Mac OS X Application |
| APP | Executable Files | FoxPro Generated Application |
| APP | Executable Files | Symbian OS Application |
| AppleTVPhotoDatabase | Data Files | Apple TV Photo Sync Files |
| APPLICATION | Settings Files | ClickOnce Deployment Manifest File |
| APPREF-MS | Settings Files | Microsoft Application Reference File |
| APR | Document Files | ArcView Project |
| APR | Programming Files | Apadana Project file |
| APS | Programming Files | Visual C++ Resource File |
| APS | Raster Image Files | Greeting Card Studio Project File |
| APS | Video Files | |
| APUN | Miscellaneous Files | |
| APW | Encrypted Files | Any Password data |
| APW | Plugin Files | |
| APX | Raster Image Files | Ability Photopaint Studio Image |
| APX | Text Files | ArcPad XML file |
| APX | Document Files | Lotus Approach Paradox specific information file |
| APZ | Archive Files | Autoplay Media Studio Exported Project |
| AR | Archive Files | Unix Static Library |
| AR | Game Files | Midtown Madness Data File |
| ARC | Data Files | Nintendo Archive File |
| ARC | Archive Files | Compressed File Archive |
| ARC | Game Files | African Safari Data File |
| ARC | Backup Files | Symbian OS Backup File |
| ARC | Archive Files | ARC lossless data compression and archive format |
| ARCH00 | Game Files | F.E.A.R. Game Archive |
| ARD | CAD Files | ArtiosCAD Workspace File |
| ARD | 3D Graphics Files | Alphacam router drawing file |
| ARENA | Game Files | Quake 3 Engine Arena File |
| ARF | Archive Files | Packmania 2 files |
| ARF | Audio Files | WebEx Advanced Recording File |
| ARF | Image Files | FITS auxiliary response file |
| ARF | Data Files | easy4 Tutor data file |
| ARG | 3D Graphics Files | AutoCAD profile export file |
| ARG | Archive Files | ARGUS compressed archive file |
| ARH | Archive Files | |
| ARH | Miscellaneous Files | |
| ARI | Archive Files | ARI Compressed File Archive |
| ARIA | Audio Files | Chipsounds Sound File |
| ARIAX | Audio Files | Chipsounds XML Sound File |
| ARJ | Archive Files | ARJ Compressed File Archive |
| ARK | Archive Files | PowerDesk Pro Archive |
| ARL | Settings Files | AOL Organizer File |
| ARL | Audio Files | Aureal Aspen bank file. |
| ARMA2OAPROFILE | Data Files | ArmA 2 Profile file |
| ARN | Archive Files | |
| ARN | Data Files | CD Autorun Creator package |
| ARN | Raster Image Files | |
| ARO | Web Files | SteelArrow Web Application File |
| ARP | Game Files | Audition Replay File |
| ARP | 3D Graphics Files | Alphacam router post file |
| ARP | Settings Files | Advanced RAR Password Recovery Setup |
| ARP | Audio Files | Adobe Audition play data file |
| ARP | Miscellaneous Files | AMS REALTIME file |
| ARP | Miscellaneous Files | Arlequin project file |
| ARPACK | Plugin Files | ArtRage Package |
| ARR | Miscellaneous Files | Advanced RAR Password Recovery Project |
| ARSC | Programming Files | Android Package Resource File |
| ARSCRIPT | Executable Files | ArtRage Script |
| ART | Raster Image Files | AOL Compressed Image File |
| ART | Archive Files | Build game engine archive file |
| ART | Programming Files | Artifacts Artifact File |
| ART | Image Files | Pfs Art Publisher file |
| ART | Image Files | Bernina Artista embroidery file |
| ART | Image Files | Gerber artwork |
| ARTPROJ | Programming Files | Artifacts Project |
| ARTWORK | Raster Image Files | ArtStudio Image |
| ARW | Raster Image Files | Sony Digital Camera Image |
| ARX | Plugin Files | AutoCAD Runtime Extension File |
| ARX | Data Files | Artista Cross Stitch file |
| ARY | Programming Files | Compaq SmartStart Scripting Toolkit File |
| AS | Programming Files | ActionScript File |
| AS | Data Files | AppleSingle File |
| AS2 | Data Files | ACTIVstudio resource file |
| AS2PROJ | Programming Files | FlashDevelop ActionScript 2 Project File |
| AS3PROJ | Programming Files | FlashDevelop ActionScript 3 Project File |
| AS4 | Backup Files | askSam Backup File |
| AS4 | Miscellaneous Files | |
| AS4A | Archive Files | ActivInspire resource pack |
| ASA | Web Files | ASP Configuration File |
| ASAT | 3D Graphics Files | Assemble SAT 3D Model File |
| ASAX | Web Files | ASP.NET Server Application File |
| ASB | Executable Files | Alphacam Stone VB Macro File |
| ASC | Text Files | ASCII Text File |
| ASC | Encrypted Files | PGP ASCII Armored File |
| ASC | Programming Files | ActionScript Communication File |
| ASC | CAD Files | LTspice Circuit Schematic File |
| ASC | Text Files | Autodesk ASCII Export File |
| ASCX | Web Files | ASP.NET User Control File |
| ASD | 3D Graphics Files | Alphacam stone drawing file |
| ASD | Archive Files | ASD Archiver compressed archive |
| ASD | Backup Files | Word AutoSave File |
| ASD | Audio Files | Ableton Live Sample Analysis File |
| ASE | 3D Graphics Files | 3D Studio Max ASCII scene export |
| ASE | Settings Files | Adobe Swatch Exchange File |
| ASE | Audio Files | Velvet Studio Sample |
| ASEC | System Files | Android Secure Application File |
| ASF | Audio Files | Advanced Systems Format File |
| ASF | Data Files | Statgraphics data file |
| ASF | Audio Files | APL*PLUS/PC shared file |
| ASHBAK | Backup Files | Ashampoo Backup Archive |
| ASHDISC | Disk Image Files | Ashampoo Burning Studio Image |
| ASHPRJ | Binary Files | Ashampoo Burning Studio project |
| ASHX | Web Files | ASP.NET Web Handler File |
| ASI | Data Files | Alpha Five storage file |
| ASI | Programming Files | Alpha Five Variable File |
| ASI | Game Files | Miles Sound System file |
| ASK | Video Files | |
| ASK | Miscellaneous Files | |
| ASK | Database Files | askSam Database |
| ASL | Settings Files | Photoshop Style |
| ASL | Text Files | AppSight Console Log |
| ASL | Data Files | Quest Adventure game file |
| ASL | Image Files | Adobe Photoshop layer style file |
| ASL | Settings Files | Miranda emoticons (smiley) definition file |
| ASM | Programming Files | Assembly Language Source Code File |
| ASM | 3D Graphics Files | Solid Edge assembly file |
| ASM | Programming Files | Visual Studio Assembler Source Code File |
| ASMX | Web Files | ASP.NET Web Service File |
| ASN | Miscellaneous Files | GameSpy Arcade skin file |
| ASN | Document Files | Atlantis Word Processor sound scheme |
| ASO | Temporary files | Adobe Flash cache file |
| ASO | Programming Files | Assembly source (Borland object) |
| ASO | Data Files | Sage Simply Accounting import file |
| ASP | Text Files | ASP text file |
| ASP | Web Files | Active Server Page |
| ASPX | Web Files | ASP.NET Source File |
| ASS | Miscellaneous Files | Aegisub Advanced Substation Alpha File |
| ASS | Game Files | Splinter Cell Blacklist Game Data File |
| ASSET | Game Files | Unity Asset File |
| AST | Settings Files | |
| AST | Video Files | |
| AST | Data Files | |
| AST | Miscellaneous Files | |
| AST | Audio Files | |
| AST | Audio Files | Actionamics Sound Tool |
| AST | Audio Files | Audio stream file |
| AST | Audio Files | Need for Speed Underground audio file |
| ASV | Email-related Files | Pegasus Mail auto saved message |
| ASV | Settings Files | Adobe Photoshop Selective Color File |
| ASV | Backup Files | Generic autosave file |
| ASV | Game Files | Train Simulator computed activity file |
| ASV | Backup Files | QuarkXpress autosave file |
| ASV | Miscellaneous Files | Notepad 2004 file |
| ASW | Video Files | |
| ASWCS | Settings Files | avast! antivirus skin |
| ASWCS | Settings Files | Avast! Compressed Skin File |
| ASWS | Settings Files | Avast! Skin File |
| ASX | Video Files | Advanced Stream Redirector File |
| ASY | Vector Graphics Files | Asymptote Module |
| ASY | CAD Files | LTspice Symbol File |
| ASY | Miscellaneous Files | LTspice IV circuit diagram file |
| AT2 | Document Files | |
| AT2 | Data Files | |
| AT3 | Audio Files | ATRAC3 Audio File |
| AT5 | GIS Files | Lowrance Map File |
| AT5 | GIS Files | Lowrence NauticPath marine electronic chart |
| ATB | 3D Graphics Files | Alphacam lathe VB macro file |
| ATB | Miscellaneous Files | AnetHelp Tools file format |
| ATC | 3D Graphics Files | AutoCAD catalog file |
| ATC | Text Files | AceText collection file |
| ATC | Miscellaneous Files | GT Thin Client command file format |
| ATC | Encrypted Files | AttacheCase encrypted file |
| ATD | Miscellaneous Files | |
| ATD | 3D Graphics Files | |
| ATE | Backup Files | Office Accounting Compressed Backup File |
| ATF | Settings Files | Photoshop Transfer Function File |
| ATF | Miscellaneous Files | Symantec pcAnywhere auto transfer file |
| ATF | Data Files | Axon Text File |
| ATH | 3D Graphics Files | Alphacam lathe thread file |
| ATH | Document Files | Athena document |
| ATH | Settings Files | Alienware AlienFX Theme File |
| ATH | Settings Files | AlienFX theme file |
| ATI | Backup Files | Office Accounting Updated Company File |
| ATK | Image Files | |
| ATM | Data Files | |
| ATM | Font Files | Adobe Type Manager file |
| ATM | 3D Graphics Files | Vue Atmospheres File |
| ATM | Game Files | PSP Game Audio File |
| ATM | Miscellaneous Files | TerraGen ATMosphere file |
| ATN | Miscellaneous Files | Visual FoxPro WWW search page wizard file |
| ATN | Settings Files | Photoshop Actions File |
| ATN | Audio Files | Extended audio data file |
| ATOM | Web Files | Atom Syndication Format |
| ATOMS | Data Files | |
| ATP | 3D Graphics Files | Alphacam lathe post file |
| ATP | Programming Files | Automise project file |
| ATP | Audio Files | Sony music format file |
| ATR | Disk Image Files | Atari Disk Image |
| ATRAC | Audio Files | Sony ATRAC Audio File |
| ATT | Text Files | |
| ATT | Image Files | AT&T Group 4 bitmap graphics |
| ATT | 3D Graphics Files | Alphacam lathe tool file |
| ATT | Data Files | SeeYou waypoint file |
| ATT00001 | Data Files | Hotmail attachment |
| ATTR | Settings Files | iPhoto Attributes File |
| ATX | Archive Files | ZIP-formatted compressed archive file |
| ATX | Plugin Files | Animation Master Plugin File |
| ATX | GIS Files | ArcGIS Attribute Index File |
| ATY | Data Files | |
| ATZ | Settings Files | Aston Compiled Theme |
| ATZ | Miscellaneous Files | Atomic Time Zone File |
| AU | Audio Files | Audio File |
| AU | Audio Files | Audacity audio block file |
| AU3 | Programming Files | AutoIt v3 Script |
| AUD | Game Files | Westwood Studios audio file |
| AUD | Audio Files | Video Game Compressed Audio File |
| AUF | Audio Files | Audacity block file |
| AUF | Font Files | Alphacam user font |
| AUM | Data Files | Adobe Update Manager data file |
| AUP | Audio Files | Audacity Project File |
| AUT | Programming Files | AutoIt Script File |
| AUT | Game Files | Descent Manager mission file |
| AUT | Data Files | Signwave Auto-Illustrator file, Workplace CD search file |
| AUTOPLAY | Programming Files | AutoPlay Media Studio Project File |
| AUX | Settings Files | LaTeX Auxiliary File |
| AUX | GIS Files | Auxiliary File |
| AUZ | Miscellaneous Files | Ableton Authorization File |
| AV | Document Files | Final Draft AV document file |
| AVA | Raster Image Files | Adobe Photoshop variations file |
| AVA | eBook Files | AvaaBook eBook |
| AVA | Data Files | BrainVoyager QX ANCOVA analysis result file |
| AVASTLIC | Miscellaneous Files | Avast! License File |
| AVASTSOUNDS | Audio Files | |
| AVATAR | Raster Image Files | Google Talk Avatar File |
| AVB | Video Files | Avid Bin File |
| AVB | Miscellaneous Files | Chat character file |
| AVC | Video Files | Avid Media Composer Script |
| AVC | Data Files | Kaspersky Anti-virus data base |
| AVD | Video Files | Movie Edit Pro Video Information File |
| AVE | Settings Files | Avid User File |
| AVE | Programming Files | ArcView Avenue script |
| AVERY | Page Layout Files | Avery Design & Print Online Label File |
| AVG | Database Files | |
| AVG | Miscellaneous Files | |
| AVGDX | Miscellaneous Files | AVG Diagnostics File |
| AVI | Video Files | Audio Video Interleave File |
| AVM | Data Files | AVG Incremental persistent file |
| AVM | Raster Image Files | Map file |
| AVP | Settings Files | AntiVir Profile file |
| AVP | Miscellaneous Files | |
| AVR | Audio Files | Audio Visual Research File |
| AVS | Video Files | Application Visualization System File |
| AVS | Image Files | Stardent AVS X bitmap image file |
| AVS | Settings Files | Adobe Photoshop Variations File |
| AVS | Programming Files | Avisynth script file |
| AVS | Audio Files | Avid Project Preferences File |
| AVS | Video Files | Audio Video Standard Files |
| avw | Miscellaneous Files | |
| AVX | Plugin Files | Avid Plugin File |
| AW | Document Files | Applix File |
| AW | Miscellaneous Files | Answer Wizard file |
| AW | Data Files | Answer Wizard File |
| AW | Archive Files | Free Pascal archive file for windows |
| AWA | Text Files | |
| AWA | Audio Files | Animation Works movie files |
| AWB | Audio Files | AMR-WB Audio File |
| AWC | Miscellaneous Files | Emulex AWC Firmware Update File |
| AWCAV | Settings Files | ActiveWorlds Custom Avatar File |
| AWD | Raster Image Files | Artweaver Document |
| AWD | Miscellaneous Files | Award BIOS Update File |
| AWD | Document Files | Microsoft At Work Fax document |
| AWE | Programming Files | |
| AWE | Miscellaneous Files | |
| AWF | Game Files | |
| AWG | Data Files | |
| AWK | Programming Files | AWK Script |
| AWKW | Miscellaneous Files | Awkwords Word Generator File |
| AWM | Web Files | AllWebMenus Project File |
| AWS | System Files | ActiveWords System file |
| AWS | 3D Graphics Files | AutoCAD Work Space file |
| AWS | Data Files | Statgraphics data file |
| AWS | Spreadsheet Files | Ability Spreadsheet File |
| AWS | Settings Files | AutoCAD Work Space File |
| AWS | Document Files | Microsoft Fax document |
| AWT | Text Files | AbiWord Template |
| AWV | Miscellaneous Files | |
| AWW | Text Files | Ability Write Document |
| AX | Plugin Files | DirectShow Filter |
| AXD | Web Files | ASP.NET Web Handler File |
| AXE | Programming Files | Annotated XML Example File |
| AXE | Audio Files | ChordMaster related file |
| AXE | Gis Files | AutoRoute Map File |
| AXM | Video Files | AXMEDIS Object |
| AXP | Settings Files | CDBurnerXP Audio Compilation File |
| AXP | Database Files | AXP database file |
| AXP | Miscellaneous Files | AxpDataGrid data file |
| AXP | Database Files | AppGini Code Generator project file |
| AXP | 3D Graphics Files | AnvilCad CAD file |
| AXT | Miscellaneous Files | |
| AXT | Raster Image Files | |
| AXT | Text Files | ASCII Application Object Template |
| AXX | Encrypted Files | AxCrypt Encrypted File |
| AY | Audio Files | AY Chiptune File |
| AZW | Document Files | Amazon Kindle eBook File |
| AZW1 | Document Files | Amazon Kindle Topaz e-book file |
| AZW3 | Document Files | Amazon Kindle eBook file |
| AZW3F | Settings Files | Amazon Kindle eBook File |
| AZW3R | Settings Files | Amazon Kindle eBook File |
| AZW3[1] | Document Files | Amazon KF8 eBook File |
| AZW4 | Data Files | Amazon Print Replica eBook |
| AZZ | Database Files | AZZ Cardfile card |
Open File Support
PC Tuneup Maestro with open file support will enable your PC to open more than 6,000 file types, with just a couple clicks.