.I | Microsoft Corporation | Developer Files | Visual Studio Intermediate File | Microsoft Visual Studio | Microsoft Corporation |
.IAF | Microsoft Corporation | Settings Files | Outlook Internet Account File | Microsoft Outlook 2016 | Microsoft Corporation |
.IBD | Oracle Corporation | Database Files | MySQL InnoDB Database Table | Windows Installer | Microsoft Corporation |
.ICAL | Open Source | Uncommon Files | iCalendar File | Microsoft Outlook | Microsoft Corporation |
.ICALENDAR | Open Source | Uncommon Files | iCalendar File | Microsoft Outlook | Microsoft Corporation |
.ICD | Macrovision Corporation | Executable Files | SafeDisc Encrypted Program | Microsoft Windows | Microsoft Corporation |
.ICF | Zoom Telephonics | Backup Files | Zoom Router Configuration File | Microsoft Notepad | Microsoft Corporation |
.ICL | Microsoft Corporation | System Files | Windows Icon Library File | Microsoft Windows | Microsoft Corporation |
.ICO | The GIMP Development Team | System Files | Icon File | Microsoft Windows Photos | Microsoft Corporation |
.ICS | IronCAD, LLC | CAD Files | IronCAD 3D CAD Drawing File | Microsoft Outlook | Microsoft Corporation |
.ICW | Microsoft Corporation | Settings Files | Microsoft Internet Explorer Internet Connection Wizard Data | Internet Explorer | Microsoft Corporation |
.ICX | Microsoft Corporation | Data Files | Remote Call Profiler Summary View | Microsoft Windows | Microsoft Corporation |
.IDA | Microsoft Corporation | Data Files | Microsoft IIS Server Data | Microsoft IIS | Microsoft Corporation |
.IDB | Microsoft Corporation | Developer Files | Visual Studio Intermediate Debug File | Microsoft Visual Studio | Microsoft Corporation |
.IDC | Pierre-Emmanuel Gougelet | Uncommon Files | Core Software Tech IDC File | Microsoft Visual Studio | Microsoft Corporation |
.IDENTIFIER | Microsoft Corporation | System Files | Windows Zone Identifier File | Microsoft Windows | Microsoft Corporation |
.IDF | Don Ho | Settings Files | MIDI Instrument Definition File | Microsoft Notepad | Microsoft Corporation |
.IDL | Microsoft Corporation | Developer Files | Interface Definition Language File | Microsoft Visual Studio | Microsoft Corporation |
.IDQ | Microsoft Corporation | Data Files | Microsoft Internet Explorer Data Query File | Internet Explorer | Microsoft Corporation |
.IDT | Microsoft Corporation | Developer Files | Windows Installer Database Text Archive File | Windows Installer | Microsoft Corporation |
.IFV | Intel Corporation | Video Files | Indeo Video Format File | Microsoft Windows Media Player | Microsoft Corporation |
.IHTML | Mozilla | Web Files | Inline HyperText Markup Language File | Internet Explorer | Microsoft Corporation |
.II | Axialis Company | Data Files | IconWorkshop Extended Information File | Microsoft Visual C++ | Microsoft Corporation |
.IIF | Intuit, Inc. | Data Files | Intuit Interchange Format File | Microsoft Excel | Microsoft Corporation |
.IIL | Symantec Corporation | Data Files | Norton CleanSweep Installation Log File | Microsoft Notepad | Microsoft Corporation |
.IIQ | Phase One | Camera Raw Files | Phase One RAW Image | Microsoft Windows Photos | Microsoft Corporation |
.IKL | Microsoft Corporation | Game Files | InkBall Game Data | InkBall | Microsoft Corporation |
.IKO | Microsoft Corporation | Graphic Files | Windows Icon Resource File | ICON resource | Microsoft Corporation |
.IKS | Microsoft Corporation | Data Files | Microsoft InkSeine Document File | InkSeine | Microsoft Corporation |
.IL | Microsoft Corporation | Uncommon Files | MSIL Assembler Input File | Microsoft Visual Studio | Microsoft Corporation |
.ILBM | Electronic Arts | Raster Image Files | Interleaved Bitmap Image | ACD Systems Canvas | Microsoft Corporation |
.ILK | Microsoft Corporation | Developer Files | Microsoft Visual Studio Linker Input File | Microsoft Visual Studio | Microsoft Corporation |
.IMD | Various Developers | GIS Files | GIS Image Metadata File | Microsoft VisioModeler | Microsoft Corporation |
.IME | Microsoft Corporation | System Files | Windows Input Method Editor File | Microsoft Windows | Microsoft Corporation |
.IMESX | Microsoft Corporation | Settings Files | Microsoft Office IME Search Provider Definition File | Microsoft Office | Microsoft Corporation |
.IML | JetBrains | Developer Files | IntelliJ IDEA Module | Microsoft Notepad | Microsoft Corporation |
.IN | Bitplane | Data Files | SmartGENERATOR Template File | Microsoft Notepad | Microsoft Corporation |
.INA | Microsoft Corporation | Data Files | MS-DOS Data File | MS-DOS | Microsoft Corporation |
.INC | Microsoft Corporation | Developer Files | Include File | Microsoft Visual Studio | Microsoft Corporation |
.INF | Parametric Technology Corporation | Temporary Files | Pro/ENGINEER Temporary | Microsoft Notepad | Microsoft Corporation |
.INFO | GNU Project | Uncommon Files | Texinfo Document | Microsoft Notepad | Microsoft Corporation |
.INFOPATHXML | Microsoft Corporation | Page Layout Files | Microsoft InfoPath Form | Microsoft InfoPath | Microsoft Corporation |
.INH | Microsoft Corporation | Developer Files | Visual Basic Basfwin File | Microsoft Visual Basic | Microsoft Corporation |
.INI | Microsoft Corporation | Settings Files | Windows Initialization File | Microsoft Windows | Microsoft Corporation |
.INO | Jordan Russell | Settings Files | Inno Setup Script | Microsoft Notepad | Microsoft Corporation |
.INS | Open Source | Data Files | LaTeX Installer Script | Microsoft Notepad | Microsoft Corporation |
.INSTALLLOG | Microsoft Corporation | Data Files | Microsoft .NET Installation Log | Microsoft Visual Studio | Microsoft Corporation |
.INV | Copyboy | Game Files | INVedit File | Microsoft Windows | Microsoft Corporation |
.IN_ | Microsoft Corporation | Settings Files | Microcoft Setup Information Data | Microsoft Windows | Microsoft Corporation |
.IOF | Microsoft Corporation | Uncommon Files | Microsoft FindIt Document | Microsoft FindIt | Microsoft Corporation |
.ION | Open Source | System Files | File Description File | Microsoft Notepad | Microsoft Corporation |
.IPI | Microsoft Corporation | Executable Files | Microsoft Windows Installer Data | Microsoft Windows | Microsoft Corporation |
.IPP | The Eclipse Foundation | Developer Files | Inline Guard Macro File | Microsoft Visual Studio | Microsoft Corporation |
.IQY | Microsoft Corporation | Web Files | Internet Query | Microsoft Excel | Microsoft Corporation |
.IRD | Microsoft Corporation | Temporary Files | Microsoft Money Temporary File | Microsoft Money | Microsoft Corporation |
.ISC | Xilinx, Inc. | Developer Files | Xilinx Device Configuration File | Microsoft Windows | Microsoft Corporation |
.ISM | Microsoft Corporation | Video Files | IIS Smooth Streaming Manifest File | Microsoft IIS | Microsoft Corporation |
.ISMV | Microsoft Corporation | Video Files | Smooth Streaming MPEG-4 Multimedia Fragment | Smooth Streaming | Microsoft Corporation |
.ISP | Microsoft Corporation | Settings Files | IIS Internet Service Provider Settings | Microsoft IIS | Microsoft Corporation |
.ISR | Open Source | Game Files | GoMoku Game File | Microsoft Notepad | Microsoft Corporation |
.ISS | Jordan Russell | Settings Files | Inno Setup Script | Microsoft Notepad | Microsoft Corporation |
.ITRACE | Microsoft Corporation | Data Files | Microsoft Visual Studio Data File | Microsoft Visual Studio | Microsoft Corporation |
.ITS | Open Source | Audio Files | Impulse Tracker Sample | Microsoft Windows | Microsoft Corporation |
.IVF | Intel Corporation | Video Files | Indeo Video Format File | Microsoft Windows Media Player | Microsoft Corporation |
.IVI | Microsoft Corporation | Data Files | MSDN InfoViewer Topic Data | Microsoft Visual Studio | Microsoft Corporation |
.IVS | Thomas d'Otreppe de Bouvette | Data Files | Initialization Vector File | Microsoft Windows Media Player | Microsoft Corporation |
.IWS | JetBrains | Developer Files | IntelliJ IDEA Web Page | Internet Explorer | Microsoft Corporation |