.A | Open Source | Sovelluskehittäjän tiedostot | Static Library | Microsoft Notepad | Microsoft Corporation |
.AAC | Xilisoft Corporation | Äänitiedostot | Advanced Audio Coding File | Microsoft Groove Music | Microsoft Corporation |
.AAE | Apple | Datatiedostot | Sidecar Image Format File | Microsoft Notepad | Microsoft Corporation |
.AAS | Adobe Systems Incorporated | Datatiedostot | Adobe Authorware Shocked Packet File | Microsoft Windows | Microsoft Corporation |
.ABF | Adobe Systems Incorporated | Fonttitiedostot | Adobe Binary Screen Font File | Microsoft Windows Font Viewer | Microsoft Corporation |
.AC3 | Various Developers | Äänitiedostot | Audio Codec 3 File | Microsoft Windows Media Player | Microsoft Corporation |
.ACCDA | Microsoft Corporation | Laajennustiedostot | Access Add-in File | Microsoft Access | Microsoft Corporation |
.ACCDB | Microsoft Corporation | Tietokantatiedostot | Access 2007 Database File | Microsoft Visual Studio | Microsoft Corporation |
.ACCDC | Microsoft Corporation | Tietokantatiedostot | Microsoft Access Signed Package | Microsoft Access | Microsoft Corporation |
.ACCDE | Microsoft Corporation | Tietokantatiedostot | Access Execute Only Database | Microsoft Access | Microsoft Corporation |
.ACCDR | Microsoft Corporation | Tietokantatiedostot | Access Runtime Application | Microsoft Access | Microsoft Corporation |
.ACCDT | Microsoft Corporation | Tietokantatiedostot | Microsoft Access Database Template | Microsoft Access | Microsoft Corporation |
.ACCDU | Microsoft Corporation | Tietokantatiedostot | Microsoft Access Database Wizard | Microsoft Access | Microsoft Corporation |
.ACCDW | Microsoft Corporation | Tietokantatiedostot | Microsoft Access Link | Microsoft Access | Microsoft Corporation |
.ACCESSOR | Microsoft Corporation | Datatiedostot | Microsoft Visual Studio Accessor File | Microsoft Visual Studio | Microsoft Corporation |
.ACCFT | Microsoft Corporation | Tietokantatiedostot | Microsoft Access Data Type Template | Microsoft Access | Microsoft Corporation |
.ACCOUNTPICTURE-MS | Microsoft Corporation | Rasterikuvatiedostot | Windows 8 Account Picture File | Microsoft Windows 8 | Microsoft Corporation |
.ACF | Valve | Pelitiedostot | Steam Application Cache File | Microsoft Agent | Microsoft Corporation |
.ACG | Bolide Software | Datatiedostot | Audio Comparer Group File | Microsoft Agent | Microsoft Corporation |
.ACL | Microsoft Corporation | Harvinaiset Tiedostot | AutoCorrect List File | Microsoft Office | Microsoft Corporation |
.ACS | Microsoft Corporation | Harvinaiset Tiedostot | Agent Character File | Microsoft Agent | Microsoft Corporation |
.ACT | Bell Labs | Äänitiedostot | ADPCM Compressed Audio File | Microsoft Visual FoxPro | Microsoft Corporation |
.ACW | Microsoft Corporation | Asetustiedostot | Windows Accessibility Wizard File | Microsoft Windows Accessibility Wizard | Microsoft Corporation |
.AD2 | Unknown Developer | Äänitiedostot | ADPCM 2-bit Compressed Voice | Microsoft Notepad | Microsoft Corporation |
.ADD | Microsoft Corporation | Harvinaiset Tiedostot | Dynamics AX Developer Documentation File | Microsoft Dynamics AX | Microsoft Corporation |
.ADDIN | Microsoft Corporation | Laajennustiedostot | Microsoft Visual Studio Add-in | Microsoft Visual Studio | Microsoft Corporation |
.ADE | Microsoft Corporation | Tietokantatiedostot | Access Project Extension | Microsoft Access | Microsoft Corporation |
.ADI | Active@ Data Recovery Software | Varmuuskopiointitiedostot | Active@ Disk Image Backup File | Microsoft Dynamics AX | Microsoft Corporation |
.ADM | Microsoft Corporation | Järjestelmätiedostot | Administrative Template File | Microsoft Group Policy Object Editor | Microsoft Corporation |
.ADML | Microsoft Corporation | Järjestelmätiedostot | Group Policy Language-Specific Administrative Template | Microsoft Group Policy Object Editor | Microsoft Corporation |
.ADMX | Microsoft Corporation | Järjestelmätiedostot | Group Policy Administrative Template File | Microsoft Group Policy Management Console | Microsoft Corporation |
.ADN | Microsoft Corporation | Tietokantatiedostot | Access Blank Project Template | Microsoft Access | Microsoft Corporation |
.ADOC | Stuart Rackham | 3D-kuvatiedostot | AsciiDoc File | Microsoft Notepad | Microsoft Corporation |
.ADP | Microsoft Corporation | Tietokantatiedostot | Access Project Extension | Microsoft Access | Microsoft Corporation |
.ADPCM | Microsoft Corporation | Äänitiedostot | ADPCM Audio | Microsoft Windows Media Player | Microsoft Corporation |
.ADT | Swiftpage, Inc. | Datatiedostot | ACT! Document Template | Microsoft Windows Media Player | Microsoft Corporation |
.ADTS | Shedworx | Äänitiedostot | Audio Data Transport Stream File | Microsoft Windows Media Player | Microsoft Corporation |
.AEU | Microsoft Corporation | GIS-tiedostot | Microsoft AutoRoute Express Europe Route Data | Microsoft AutoRoute | Microsoft Corporation |
.AG4 | Microsoft Corporation | Datatiedostot | Microsoft Access G4 Data | Microsoft Access | Microsoft Corporation |
.AGE OF EMPIRES / AGE OF MYTHOLOGY GAME FILE | Microsoft Corporation | Pelitiedostot | Age Of Empires/Age Of Mythology Game File | Microsoft Studios | Microsoft Corporation |
.AHD | Microsoft Corporation | Datatiedostot | Dynamics AX Online Help Data File | Microsoft Dynamics AX | Microsoft Corporation |
.AHI | Microsoft Corporation | Datatiedostot | Microsoft Dynamics AX Online Help Index | Microsoft Dynamics AX | Microsoft Corporation |
.AHTM | Unknown Developer | Web-tiedostot | HTML File | Internet Explorer | Microsoft Corporation |
.AI | Adobe Systems Incorporated | Vektorikuvatiedostot | Adobe Illustrator File | ACD Systems Canvas | Microsoft Corporation |
.AI4 | Adobe Systems Incorporated | Vektorikuvatiedostot | Encapsulated PostScript File | Microsoft Word | Microsoft Corporation |
.AIF | Apple | Äänitiedostot | Audio Interchange File Format | Microsoft Windows Media Player | Microsoft Corporation |
.AIFC | Apple | Äänitiedostot | Compressed Audio Interchange File | Microsoft Windows Media Player | Microsoft Corporation |
.AIFF | Apple | Äänitiedostot | Audio Interchange File Format | Microsoft Windows Media Player | Microsoft Corporation |
.AJB | Planit Solutions, Inc. | Sovelluskehittäjän tiedostot | Alphacam Water Jet VB Macro | Microsoft Visual Basic | Microsoft Corporation |
.AKM | Srinivas Annam | Datatiedostot | Aksharamala Keymap Binary Data | Microsoft Operation Manager | Microsoft Corporation |
.ALC | Ableton | Äänitiedostot | Ableton Live Clip File | Microsoft Dynamics AX | Microsoft Corporation |
.ALD | Microsoft Corporation | Datatiedostot | Dynamics AX Application Label Data File | Microsoft Dynamics AX | Microsoft Corporation |
.ALE | Avid Technology | Videotiedostot | Avid Log Exchange File | Microsoft Notepad | Microsoft Corporation |
.ALI | Microsoft Corporation | Datatiedostot | Dynamics AX Label Index File | Microsoft Dynamics AX | Microsoft Corporation |
.ALT | Microsoft Corporation | Harvinaiset Tiedostot | Dynamics AX Temporary File | Microsoft Dynamics AX | Microsoft Corporation |
.ALX | BlackBerry | Asetustiedostot | BlackBerry Application Loader XML File | Microsoft Visual Studio | Microsoft Corporation |
.AML | Intel Corporation | Järjestelmätiedostot | ACPI Machine Language File | Microsoft Visual Studio | Microsoft Corporation |
.AMN | Microsoft Corporation | Datatiedostot | Aero Studio 2008 Menu Data | Aero Studio | Microsoft Corporation |
.AMR | Open Source | Äänitiedostot | Adaptive Multi-Rate Codec File | Microsoft Groove Music | Microsoft Corporation |
.ANDROID | Unknown Developer | Datatiedostot | Android Readme File | Microsoft Notepad | Microsoft Corporation |
.ANDROIDPROJ | Microsoft Corporation | Sovelluskehittäjän tiedostot | Microsoft Visual Studio Android Project | Microsoft Visual Studio | Microsoft Corporation |
.ANN | ABBYY | Datatiedostot | Lingvo Dictionary Annotation File | Microsoft Windows Help | Microsoft Corporation |
.ANS | Open Source | Tekstitiedostot | ANSI Text File | Microsoft Notepad | Microsoft Corporation |
.AOD | Microsoft Corporation | Harvinaiset Tiedostot | Dynamics AX Object Data File | Microsoft Dynamics AX | Microsoft Corporation |
.AOI | Open Source | 3D-kuvatiedostot | Art Of Illusion 3D Scene | Microsoft Dynamics AX | Microsoft Corporation |
.AP | Fifth Generation Systems | Web-tiedostot | Active Page | Microsoft Edge | Microsoft Corporation |
.APL | Matthew T. Ashland | Äänitiedostot | Monkey's Audio Track Information File | Microsoft Windows Media Player | Microsoft Corporation |
.APP | Nokia | Suoritettavat tiedostot | Symbian OS Application | Microsoft Visual FoxPro | Microsoft Corporation |
.APPCONTENT-MS | Microsoft Corporation | Asetustiedostot | Microsoft Windows Application Content | Microsoft Windows 8 | Microsoft Corporation |
.APPLICATION | Microsoft Corporation | Asetustiedostot | ClickOnce Deployment Manifest File | Microsoft .NET Framework | Microsoft Corporation |
.APPREF-MS | Microsoft Corporation | Asetustiedostot | Microsoft Application Reference File | Microsoft ClickOnce | Microsoft Corporation |
.APPX | Microsoft Corporation | Sovelluskehittäjän tiedostot | Windows 8 App Package | Microsoft Windows 8 | Microsoft Corporation |
.APPXBUNDLE | Microsoft Corporation | Pakatut tiedostot | Microsoft Windows App Bundle Package | Microsoft Visual Studio | Microsoft Corporation |
.APPXMANIFEST | Microsoft Corporation | Sovelluskehittäjän tiedostot | Windows Store App Source Manifest | Microsoft Visual Studio | Microsoft Corporation |
.APS | Microsoft Corporation | Sovelluskehittäjän tiedostot | Visual C++ Resource File | Microsoft Visual C++ | Microsoft Corporation |
.APT | Apache Software Foundation | Tekstitiedostot | Almost Plain Text File | Microsoft Notepad | Microsoft Corporation |
.ARI | ARRI Group | Kameran Raakatiedostot | ARRIRAW Image | Microsoft Windows Photos | Microsoft Corporation |
.ARMY | Microsoft Corporation | Pelitiedostot | Impossible Creatures Collection Of Created Creatures File | Impossible Creatures | Microsoft Corporation |
.ARN | Microsoft Corporation | Datatiedostot | Autoruns Data File | Microsoft Autoruns | Microsoft Corporation |
.ARV | Microsoft Corporation | Datatiedostot | Microsoft Autoroute User Information File | Microsoft AutoRoute | Microsoft Corporation |
.ARW | Sony | Kameran Raakatiedostot | Sony Digital Camera Image | Microsoft Windows Photos | Microsoft Corporation |
.AS | Adobe Systems Incorporated | Sovelluskehittäjän tiedostot | Adobe ActionScript File | Microsoft Notepad | Microsoft Corporation |
.ASA | Microsoft Corporation | Web-tiedostot | ASP Configuration File | Microsoft Notepad | Microsoft Corporation |
.ASC | Symantec Corporation | Koodatut tiedostot | PGP (Pretty Good Privacy) ASCII Armored File | Microsoft Notepad | Microsoft Corporation |
.ASCII | Sublime HQ Pty Ltd | Tekstitiedostot | ASCII Text | Microsoft Notepad | Microsoft Corporation |
.ASCX | Microsoft Corporation | Web-tiedostot | ASP.NET User Control File | Microsoft Visual Web Developer | Microsoft Corporation |
.ASD | Microsoft Corporation | Varmuuskopiointitiedostot | Word AutoSave File | Microsoft Word | Microsoft Corporation |
.ASE | Adobe Systems Incorporated | Asetustiedostot | Adobe Swatch Exchange File | Microsoft Notepad | Microsoft Corporation |
.ASF | Microsoft Corporation | Videotiedostot | Advanced Systems Format File | Microsoft Windows Media Player | Microsoft Corporation |
.ASHX | Microsoft Corporation | Web-tiedostot | ASP.NET Web Handler File | Microsoft Notepad | Microsoft Corporation |
.ASM | Open Source | Sovelluskehittäjän tiedostot | Assembly Language Source Code File | Microsoft Notepad | Microsoft Corporation |
.ASMX | Microsoft Corporation | Web-tiedostot | ASP.NET Web Service File | Microsoft Visual Studio | Microsoft Corporation |
.ASP | Microsoft Corporation | Web-tiedostot | Active Server Page | Microsoft Edge | Microsoft Corporation |
.ASPX | Microsoft Corporation | Web-tiedostot | Active Server Page Extended ASP.NET Script | Microsoft Visual Studio | Microsoft Corporation |
.ASX | Microsoft Corporation | Videotiedostot | Microsoft ASF Redirector File | Microsoft Windows Media Player | Microsoft Corporation |
.ATD | Planit Solutions, Inc. | CAD-tiedostot | Alphacam Lathe Drawing | Microsoft Systems Management Server | Microsoft Corporation |
.ATE | Microsoft Corporation | Varmuuskopiointitiedostot | Office Accounting Compressed Backup | Microsoft Office Accounting | Microsoft Corporation |
.ATF | Molecular Devices | Datatiedostot | Axon Text File | Microsoft Excel | Microsoft Corporation |
.ATH | Dell Boomi | Asetustiedostot | Alienware AlienFX Theme File | Microsoft XML Notepad | Microsoft Corporation |
.ATM | E-on Software, Inc. | 3D-kuvatiedostot | Vue Atmospheres File | Microsoft Windows | Microsoft Corporation |