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    File extensions starting with I

    I Borland C++ Intermediate Preprocessor Output Format
    I00 Split MDS Disk Image Format
    I01 Split Disk Image Format
    I02 Split Disk Image Format
    I03 Split Disk Image
    I04 Split Disk Image
    I05 Split Disk Image
    I17 Pixel PowerCollage Image
    I18 Pixel Power Collage Image Format
    I1C IBM Voice Type Languages Newuser
    I1I IBM Voice Type Languages Newuser
    I2C IBM Voice Type Languages Newuser
    I2D Wyse Device Management Thin Client Disk Image
    I2G Intergeo I2G Geometric
    I2I IBM Voice Type Languages Newuser
    I32 NI LabView
    I3A Point Blank Game
    I3ANIMPACK Point Blank Game
    I3C IBM Voice Type Languages Newuser
    I3CHR Point Blank Game
    I3D Houdini Image 3D Format
    I3EXEC Point Blank
    I3I IBM Voice Type Languages Newuser
    I3PACK Point Blank Game Data Format
    I3S Point Blank Game
    I5D IUCLID XML Backup
    I5S IUCLID Compressed Backup
    I5Z IUCLID Import Or Export Format
    I64 Interactive Disassembler
    IA1 Infinite Algebra 1
    IA2 Infinite Algebra Assignment
    IA64 HP-UX
    IAA INTUS Audio Format
    IAD Symantec Patch Management
    IAF Microsoft Outlook Exported Account And Email Setting Format
    IAI Nova Logic Item Attributes Info
    IAK MAIL.DAT Information Access Key
    IAL Microsoft SharePoint List Activity
    IAM Autodesk Inventor Assembly Format
    IAO ImperiumAO Data
    IAR CD Katalog
    IAS BitDefender Format
    IB InterBase Database Format
    IB2 IncrediBots World Map Format
    IB3 IncrediBots World Map Format
    IB7 Pixel Power Collage Image Format
    IBA IBooks Author E-book Format
    IBAK Password Safe Backup
    IBANK IBank Accounting Data
    IBATEMPLATE IBooks Author Template Format
    IBB LIGHTNING UK! ImgBurn Project Format
    IBCD InstantBingoCard Document Format
    IBD MySQL InnoDB Database Table
    IBE IBECrypto Encrypted
    IBF Final Fantasy XI Game
    IBG IBridge Project Workspace
    IBI Raven Software ICARUS Compiled Script
    IBK Sound Blaster FM Instrument Bank
    IBL IBasic Component Language
    IBM Commodore Amiga Graphics
    IBN WinIQSIM
    IBOOKS IBooks E-book Format
    IBP IsoBuster Managed Image Information Format
    IBPLUGIN Interface Builder Extension
    IBQ IsoBuster Managed Image Format
    IBRO IncrediBots Robot Format
    IBS I2 IBase
    IBT Thief Deadly Shadows Texture And Model Format
    IBV IGOR Pro Binary Variable
    IBW IGOR Pro Binary Wave
    IBX Interscope BlackBox
    IBY Symbian ROM Image Component Include
    IBZ MySQL InnoDB Database Table Compressed Backup
    IC ASwin Project
    IC0 HSPICE Output
    IC1 Atari Bitmap Image Format
    IC2 Atari Bitmap Image Format
    IC3 Atari Bitmap Image Format
    IC3D IC3D Scene Format
    IC4 SADiE Interchange Data
    IC5 Interactive Image Creator Image Project
    IC8 Neo Geo BIOS
    ICA Citrix Independent Computer Architecture Format
    ICAL ICalendar Calendar File Format (Microsoft Outlook, Apple ICal)
    ICALENDAR ICalendar Calendar File Format (Microsoft Outlook, Apple ICal)
    ICALEVENT Apple ICal Document Format
    ICALTODO Apple ICal Document Format
    ICAP Adobe InDesign Format
    ICB Truevision Targa Format
    ICBU Apple ICal Calendars Backup Format
    ICC International Color Consortium Profile File Format
    ICD Microsoft Windows OpenGL Installable Client Driver Format
    ICE IceChat IRC Client Script Format
    ICF Zoom Router Configuration Format
    ICG Image Comparer Result
    ICHAT Apple IChat Saved History Format
    ICHATTRANSFER Apple IChat Transfer
    ICI Ampac
    ICL Icon Library Format
    ICM Windows Image Color Matching Format
    ICMA Adobe InDesign Format
    ICML Adobe InDesign Format
    ICMS RagTime Extensions
    ICN Icon Format
    ICNS Apple Icon Graphic Format
    ICO Icon Format
    ICOA IBM Image Object Content Architecture (IOCA) Bitmap Graphics
    ICON Icon Image Format
    ICONBOX IconBox
    ICONBOXICON IconBox
    ICONPACKAGE IconPackager Theme Format
    ICONTAINER Icon Container Library Format
    ICP Unix IContact Parameter
    ICPR IconUtils Project Format
    ICQ ICQ Archive
    ICR Image Comparer Result
    ICS ICalendar Calendar File Format (Microsoft Outlook, Apple ICal)
    ICST Adobe InCopy Document Preset
    ICTE Apple Mac Internet Configuration
    ICURSORFX ICursor Effect Format
    ICW Microsoft Internet Explorer Internet Connection Wizard
    ICX Remote Call Profiler Summary View
    ICXS ITunes
    ICZ Lib2Def Output
    ID IBM Lotus Notes ID Format
    ID2 Microsoft Live Messenger Avatar Format
    ID3 IData 3 Data
    ID31 Helium Music Manager Id3 Tags Export
    ID32 Helium Music Manager Id3 Tags Export
    IDA Microsoft IIS Server
    IDAP Adobe InDesign Format
    IDATA IData 2 Data
    IDB Microsoft Visual Studio Developer Intermediate Debug Format
    IDB2 InfoStat Database
    IDC Internet Database Connector Document Format
    IDD Adobe InDesign For Mac Document
    IDE Borland C++ Project Format
    IDEA Adobe Ideas Vector Drawing Format
    IDEMO InstantDemo Project
    IDENTCACHE Delphi Temporary Cache
    IDENTIFIER Microsoft Windows Zone Identifier
    IDF Microsoft Windows 95 MIDI Instrument Definition Format
    IDG Majax Settings
    IDH OpenCBM
    IDI I-DEAS Web Access
    IDIF Netscape Saved Address Book Identification
    IDL Visual Studio Visual C++ Interface Definition Library Format
    IDLK Adobe InDesign Lock Format
    IDLL CodeWarrior DLL
    IDM IData Mobile Data
    IDML Adobe InDesign Markup Format
    IDMS Adobe InDesign Format
    IDP IBM Personal Communications Interchange Document Profile
    IDPK Adobe InDesign Format
    IDPP Adobe InDesign Format
    IDQ Microsoft Internet Explorer Data Query
    IDRC Adobe InDesign Resource
    IDS Infinity Game Engine
    IDT Windows Installer Exported Database Table Format
    IDV Autodesk Inventor Design View Tree
    IDW AutoDesk Inventor Drawing Format
    IDX Index Format
    IDX0 RuneScape Cache Index Format
    IDX255 RuneScape Cache Index Format
    IDX_DLL Microsoft Office IDX_DLL
    IDZ I-DEAS Web Access
    IE3 Internet Explorer 3
    IEBARZIP Explorer Bar Icon Pack
    IEC Microsoft HTML Converter
    IEI Image Eye Thumbnail Cache
    IEL ParticleIllusion SE Emitter Library
    IEM Informix Error Message
    IENV IData 3 Envelope Template
    IES IESNA Photometric Data Format
    IEX The Tuttles Madcap Misadventures
    IF IFwin Project Format
    IF9 Pixel Power Collage Image
    IFAITH IFaith Format
    IFB Oracle Siebel Interface Configuration
    IFC Industry Foundation Classes Format
    IFCXML Industry Foundation Classes XML Format
    IFCZIP Compessed IFC Format
    IFD Adobe Output Designer Form (Jet Form Design Form)
    IFF Autodesk Maya Image Interchange Format
    IFL 3D Studio Max Animation Format List Control Format
    IFLV InfoLevin Database
    IFM Brighterion IPrevent Fraud Model
    IFN IGOR Pro Formatted Notebook
    IFO DVD Movie Information File Format
    IFP Grand Theft Auto Animation Format
    IFR Formula One 2001 Game
    IFS InfoSlips Secure Information Package Format
    IFT Canon Settings
    IFU All Image Image
    IFV Indeo Video Format
    IFW INTUS Firmware Format
    IFX Rational XDE
    IFZ All Image Compressed Image
    IG Instagram JPEG Picture Image
    IG2 IGES CAD
    IGA CARIS GIS Corner Georeferencing Coordinate
    IGB Google Earth Model
    IGC Anime List Builder Input Format
    IGE Erdas Imagine Large Raster Spill
    IGES Initial Graphics Exchange Specification Format
    IGG SuiteProfiler Color Map Format
    IGI Indigo Renderer Picture Image
    IGL IGOR Game
    IGM Indigo Renderer Material Texture Format
    IGMA INTUS Graphics User Interface Format
    IGN Adobe RoboHelp Ignore List Format
    IGO Instagram JPEG Picture Image
    IGP Igor Player Format
    IGR SmartSketch Drawing Design Format
    IGS IGES ASCII CAD Format
    IGT IGrafx Document Template
    IGV Integrative Genomics Viewer
    IGX IGrafX FlowCharter Flow Chart Or Process Model Format
    IGY Microsoft Excel Web Query
    IGZ Gzipped Image
    IHA GE Historian Archive
    IHC Proficy Historian
    IHF IGOR Pro Help
    IHS Bink Inbound History
    IHTML Inline HyperText Markup Language
    IHW IN-HEH Timeline Workspace Format
    IHX IN-HEH Timeline Database Format
    II IconWorkshop Extended Information Format
    IID IInstaller Idirectory
    IIE SimIIe Emulator
    IIF QuickBooks Interchange Format
    III Know Your Stuff
    IIL CleanSweep Installation Log
    IIM IOpus Internet Macro Format
    IIMG Interleaf Image Format
    IIP ThinAnywhere Configuration Format
    IIQ Phase One RAW Image Format
    IIS PHOTOfunSTUDIO HD Video
    IIT Install Creator Settings Format
    IIX Trados Translation Memory Index Format
    IJS J Interpretor Script Format
    IK CryENGINE IK Animation Format
    IKF INTUS Keyboard Settings Format
    IKMP SampleTank Preset
    IKS Microsoft InkSeine Document
    IL Euphoria Shrouded Source Code
    IL3 ParticleIllusion 3 Emitter Library
    ILA LohnViewer Document
    ILABEL IData 3 Template Label
    ILB Scream Tracker Data
    ILBM Interleaved Bitmap Format
    ILDOC BroadVision QuickSilver Document Format
    ILF Alim
    ILG MakeIndex Error Log
    ILHT Safari Internet Location
    ILK Incremental Linking Format
    ILL Illust Logic Puzzle
    ILM Opus Creator Multimedia
    ILOCK IData
    ILP Gurobi Optimizer Temporary
    ILS Internet Security And Acceleration Server Summary
    ILX Interlex Vocabulary
    IM SunOS Grey Scale Bitmap
    IM24 Bitmap Graphic
    IM32 Sun 32bit Raster
    IM5 Visilog Image
    IM7 DaVis Graphics
    IM8 Sun Raster Graphic
    IMA Generic Disk Image
    IMA4 Apple QuickTime IMA4 Encoded Audio
    IMAGE ShrinkWrap Disk Image Format
    IMAP Merak Mail Server Internet Message Access Protocol
    IMAPMBOX Apple Mail Format
    IMB IncredMail Adress Book And Temporary Contacts
    IMC LucasArts Game Sound
    IMD GIS Image Metadata Format
    IME Global Input Method Editor
    IMELODY IMelody Mobile Phone Ring-tone Format
    IMESX Microsoft Office IME Search Provider Definition
    IMF Apogee IMF Audio File Format
    IMG Floppy Image Image Format
    IMG3 Apple IOS Img3 Encrypted Or Signed Container Format
    IMGA Marathon 2 Aleph One Image Format
    IMGB Final Fantasy XII Model
    IMGPART Apple Mac NDIF Split Image
    IMH IncrediMail Contacts Export
    IMI Magellan Map Format
    IMJ Pegasus Image Corp Format Bitmap Graphics Format
    IMK IncrediMail Licence
    IML ACT! Internet Mail Message Format
    IMM IncrediMail Deleted Email Messages List
    IMMODULES GTK+ Module Format
    IMN IncrediMail Notify
    IMO IMON Manager Settings
    IMOTION IClone Motion Capture
    IMOVIEEVENT IMovie Library
    IMOVIELIBRARY IMovie Event Library
    IMOVIEMOBILE IMovie Project Package
    IMOVIEPROJ Apple IMovie Project Format
    IMOVIEPROJECT Apple IMovie Project Format
    IMP FileMaker Pro Import Data Filter
    IMPORTED UTorrent Torrent
    IMR IBM Cognos Impromptu Report Format
    IMS IconForge Create Executable Library Data
    IMSCC Canvas Exported Course
    IMSP Survey Designer Survey
    IMT IMNET Graphics Image Format
    IMTX IMindMap Template
    IMV ImageMixerVCD Project
    IMW IncrediMail Sound
    IMX DaVis Image
    IMY IMelody Mobile Phone Ring-tone Format
    IMZ WinImage Compressed Disk Image
    IN McAfee Antivirus Format
    IN3 Harvard Graphics Input Device Driver
    IN4 InfoBlaster IN4 Registry
    IN7 Ox Data
    INA MS-DOS
    INB Rebel Assault Backup
    INC HTML Server Side Include Format
    INCA Adobe InDesign Format
    INCD Adobe InDesign Format
    INCP Adobe InCopy CS3 Package Format
    INCT Adobe InCopy Template Format
    INCX Adobe InDesign Format
    IND Adobe InDesign Graphics Document Format
    INDB Adobe InDesign Book Format
    INDD Adobe InDesign Document Format
    INDESIGNPLUGIN Adobe InDesign Plugin Format
    INDEX Eclipse Help Index
    INDEXARRAYS Mac OS X Spotlight
    INDEXCOMPACTDIRECTORY Mac OS X Spotlight
    INDEXDIRECTORY Mac OS X Spotlight
    INDEXPOSITIONS Mac OS X Spotlight
    INDEXPOSITIONTABLE Mac OS X Spotlight
    INDK Adobe InDesign Format
    INDL Adobe InDesign Object Library Format
    INDN Adobe InDesign For Mac
    INDP Adobe InDesign Package Format
    INDS Adobe InDesign Format
    INDT Adobe InDesign Template Format
    INDX Microsoft Mail Index
    INETLOC Apple Mac OS X Finder Internet Location Format
    INF Windows Installation Script Format
    INFO ZoomBrowser Image Index Format
    INFO-1 Cygwin Info
    INFO-10 Cygwin Info
    INFO-11 Cygwin Info
    INFO-12 Cygwin Info
    INFO-13 Cygwin Info
    INFO-14 Cygwin Info
    INFO-15 Cygwin Info
    INFO-16 Cygwin Info
    INFO-17 Cygwin Info
    INFO-18 Cygwin Info
    INFO-19 Cygwin Info
    INFO-2 Cygwin Info
    INFO-20 Cygwin Info
    INFO-21 Cygwin Info
    INFO-22 Cygwin Info
    INFO-23 Cygwin Info
    INFO-24 Cygwin Info
    INFO-25 Cygwin Info
    INFO-26 Cygwin Info
    INFO-27 Cygwin Info
    INFO-28 Cygwin Info
    INFO-29 Cygwin Info
    INFO-3 Cygwin Info
    INFO-30 Cygwin Info
    INFO-4 Cygwin Info
    INFO-5 Cygwin Info
    INFO-6 Cygwin Info
    INFO-7 Cygwin Info
    INFO-8 Cygwin Info
    INFO-9 Cygwin Info
    INFOPATHXML Microsoft InfoPath Form Format
    INF_LOC Microsoft Windows Installation Format
    ING MasterCook Ingredients Format
    INGR Intergraph Raster File Format
    INH Microsoft Visual Basic Basfwin
    INI Text Configuration Format
    INI-DIST PHP INI
    INI-RECOMMENDED PHP INI
    INI2 Text Configuration
    INIT WM Keeper CLASSIC Temporary Keys
    INIX Adobe InDesign
    INJB Adobe InDesign
    INK Mimio Ink Data Format
    INL Microsoft Visual C++ Inline Function Format
    INLK Adobe InDesign Lock Format
    INM FaxMaster Document
    INMS Adobe InDesign Menu Set Format
    INN Phantasmagoria Ini
    INO Inno Setup Script Format
    INP Abaqus Input Format
    INPROGRESS Apple Mac OS X Time Machine Temporary Format
    INPUTPLUGIN Apple Mac OS X PluginIM Input Method
    INPX PTV Vissim Network
    INRS Adobe InDesign For Mac
    INS InstallShield Script Format
    INSANIQUARIUMDELUXESAVEDGAME Insaniquarium Deluxe Save Game
    INSP Microsoft Visual Studio Inspector
    INSS Apple Mac OS X Setup Assistant ISP Info Document
    INST RMCProfile Peak Profile
    INSTALLHELPER Apple Mac OS X Install Helper Document
    INSTALLLOG Microsoft .NET Installation Log
    INSTALL_BACKUP AVG Shell Extension Module
    INSX InScribe XML Document
    INT SGI Integer Image
    INT? Quicken For Mac
    INTAGLIO Intaglio Drawing
    INTERNETCONNECT Apple Mac OS X System Preferences Internet Connect Document Format
    INTU Quicken For Mac
    INUSE Text Configuration File (in Use)
    INV Minecraft INVedit Format
    INVENTOR SGI Open Inventor
    INX Adobe InDesign Interchange File Format
    IN_ Microcoft Setup Information
    IO CPIO Compressed File Archive
    IOBIT Advanced SystemCare PRO Backup Format
    IOC Winamp Io Extension
    IOCA IBM Image Object Content Architecture (IOCA) Bitmap Graphics
    IOK Omniscope Configuration
    ION Description Format
    IOPLIST Apple Mac OS X Ioplist Format
    IOR Maxwell Render Index Of Refraction
    IP IconPackager Theme Format
    IP3 ParticleIllusion Project
    IPA IPhone Application
    IPALIAS Apple IPhoto Alias Format
    IPB IPhone Perl Script
    IPC IncrediFlash Tools Image
    IPCC Apple IOS Carrier Update Format
    IPCH Microsoft Visual C++ Intellisense Precompiled Header Format
    IPD BlackBerry Backup (pre 2012) Format
    IPDB IP Address Tracker IP Database
    IPF Microsoft SMS Installer Script
    IPG IPod Game Package Format
    IPH InterPaint (Hires) Image Format
    IPHOTO Apple IPhoto Library Format
    IPHOTOPROJECT Apple IPhoto Printing Project
    IPI Microsoft Windows Installer
    IPICK IPick Football Picture Image Format
    IPJ AutoDesk Inventor Project Format
    IPK Shana Informed Filler Format
    IPKG Indicore SDK Package
    IPL CorelDRAW Pantone Spot Reference Palette Format
    IPL22 PLATO Learning Network Temporary
    IPLB Apple IPhoto Library Archive
    IPMETA Apple IPhoto Library Metadata Format
    IPN AutoDesk Inventor Presentation File Format
    IPO InstallShield Object Project
    IPOD Rockbox Executable Application
    IPP Inline Guard Macro Format
    IPPROJ Microsoft Visual Studio InfoPath Project
    IPR IntelliJ Project XML Data Format
    IPROJECT IClone Project Format
    IPS International Patching System Binary Patch Format
    IPSPOT Apple IPhoto Index Format
    IPSW IPhone, IPad Or IPod Touch Software Firmware Update Format
    IPT AutoDesk Inventor Part Format
    IPTHEME IconPackager Theme Format
    IPUTILS Gnome Desktop
    IPX Ipix Spherical Panorama Format
    IPZ ICQ Plus Skin
    IQC CADIQ Comparison Analysis Result
    IQD Impromptu Defintion
    IQF Integra Query
    IQP 20-20 Office Sales Exported Quote
    IQR Cadiq View Analysis Results Data
    IQS CADIQ Summary Log
    IQT Tektronix
    IQU AmeriCalc Update
    IQY Microsoft Excel Internet Query Format
    IRAF IRAF
    IRAFHOSTS IRAF User
    IRBRC Ruby
    IRC JIRCii Script
    IRCP Adobe SpeedGrade Project Format
    IRD Microsoft Money Temporary
    IREV Runtime Revolution Script
    IRF Autodesk Impression Drawing Format
    IRG Sofya Database Interclass Relation Graph
    IRIS Silicon Irix Graphics Raw Format
    IRIX6 Irix 6
    IRIX64BIT Irix 64 Bit Make
    IRL IBM WebSphere ILOG JRules Rule Language
    IROBO RoboMind Source Code
    IROCK IntelliRock Sensor Data Format
    IROS Adobe Save For Web Settings Format
    IRP Microsoft ISA Server Report Generator Output Format
    IRR UVBrewer Brewer Lamp Format
    IRRMESH Irrlicht Static Mesh
    IRS Adobe Photoshop Optimized Setting Format
    IRV XMap Workfile
    IRX UVBrewer Brewer Lamp Irradiation Format
    IS InStereo Audio
    IS1 SmartWare Input Screen Format
    IS2 SmartWare Input Screen
    IS3 SmartWare Input Screen
    IS4 SmartWare Input Screen
    ISA Adobe Photoshop ImageReady Action
    ISALE ISale Auction
    ISALETEMPLATE ISale Template
    ISALLIC ISale License
    ISB Vanguard Music
    ISC Xilinx Device Configuration Information Format
    ISCORRUPT Skype
    ISD InstallShield Dialog Format
    ISE InstallShield Express Project Format
    ISF Inspiration Diagram Format
    ISFF Intergraph Standard File Format
    ISH ISH Compressed Archive
    ISH1 Animation-ish Wiggledoodle-ish Document Format
    ISH2 Animation-ishFlipBook-ish Document Format
    ISH3 Animation-ish Advanced-ish Document Format
    ISL InstallShield Temporary Installer
    ISM InstallShield Project Format
    ISMA IIS Smooth Streaming Audio Format
    ISMC Smooth Streaming Client Manifest Format
    ISMCLIP IStopMotion Animation Clip
    ISMV Smooth Streaming Fragmented MPEG-4 Video Format
    ISN InstallShield Installer Source Format
    ISO CD/DVD/HD DVD/Blu-ray Disc ISO Binary Image Format
    ISOZ Arbortext IsoDraw Compressed Drawing Format
    ISP Internet Service Provider Settings Format
    ISPC Image Surfer Pro Album Format
    ISQ MicroCT Image
    ISR InstallShield Uninstall Information Format
    ISS ISS Picture Image Format
    IST Adobe ImageStyler Format
    ISTG ISOE Imagine Stage
    ISU InstallShield Uninstall Script Format
    ISV IDL ITools State
    ISWP Apple ITunes IOS Firmware Update
    ISX Intrasis Object
    ISYM ArchiCAD For MAC Geometric Description Language
    ISZ UltraISO Compressed Disk Image Format
    IT Impulse Tracker Music Module Format
    ITA IconTweaker Theme Archive
    ITB ITunes Library Extras
    ITC ITunes Cover Flow Data Format
    ITC2 Apple ITunes Cover Flow Data Format
    ITCL Cygwin Iwidgets Scripts
    ITD SDL Trados Translation
    ITDB Apple ITunes Database Format
    ITE Apple ITunes Extras Format
    ITEMDATA-MS Windows 8 Start Screen Item Data Format
    ITG Intergraph Format Bitmap Graphics
    ITHMB Apple IPhone, IPad, IPod Thumbnail Image Format
    ITI Impulse Tracker Instrument
    ITK ScummVM Game Data Format
    ITL Apple ITunes Music Database Format
    ITLP Apple ITunes LP Format
    ITLS Apple ITunes Live Stream Format
    ITM IThink Model Format
    ITMS Apple ITunes Store URL Format
    ITMSP Apple ITunes Store Package Format
    ITMZ IThoughtsHD Mind-map Document
    ITN TomTom Navigator Itinerary Format
    ITP BioWare Aurora Game Engine Palette
    ITPC Apple ITunes Podcast Subscription Format
    ITQ SAIA S-Web Variable Initialization
    ITR Icy Tower Format
    ITS Impulse Tracker Sample Format
    ITT IconTweaker Theme Format
    ITW InTouch With Database Format
    ITX IBM FileNet EForms ITX Form Template Format
    ITXIB Apple ITunes Dump
    ITZ Impulse Tracker Music Module
    IUP ChessBase Fritz Update Format
    IUS InfoTMIC Android Update Format
    IV SGI Inventor VRML Format
    IV2I Norton Ghost Disk Drive Image
    IVA Surveillance Video Format
    IVB Truevision Targa Format Bitmap Graphics
    IVC IView MediaPro Catalogue Format
    IVD Bitdefender Incremental Virus Definitions Format
    IVE OpenSceneGraph Format
    IVEX Worldviz Vizard Encrypted
    IVF Indeo Video Format
    IVI MSDN InfoViewer Topic
    IVL IBM ILOG JViews Maps Map
    IVM Interactive Visual Media Video Format
    IVP Panorama
    IVR Virtual Reality World (iSeeMedia Image World)
    IVS Internet Streaming Video
    IVT Beyond 20/20 Table Aggregate Data Format
    IVU ImmerVision XML User Interface
    IVUE Live Picture Image Format
    IVWR IntelliView Offline Report
    IVX Beyond 20/20 Microdata Directory
    IW Chain Engineering Database Format
    IW4 DjVu Image Format
    IW44 DjVu Image Format
    IWB Common File Format
    IWC Installwatch Database
    IWD Call Of Duty Game Archive Format
    IWDGT Apple IWeb Widget Format
    IWI Infinity Ward Texture Format
    IWL WebSite X5 License
    IWM IWriteMusic
    IWP InfinityQS ESPC
    IWPRJ Website X5 Project
    IWS Trojan-Downloader.JS.Agent Format
    IWT Sunnysoft InterWrite Full Keyboard Skin
    IWXDATA IWorx Data Format
    IWZ InstallShield Express Project Format
    IWZIP Website X5 Project
    IX DtSearch Index Format
    IX2 Rebel Chess Program Database Format
    IX3 Instant.Exe 3.0 Script
    IX4 Rebel Chess
    IXA Ulead Disc Image Format
    IXB Ulead Disk Image Format
    IXC ArcView Geocoding Index For Read-write Coverages
    IXF Integration Exchange Format
    IXI IxiQuarks Preferences
    IXL DB/TextWorks Database Indexed List
    IXS ArcView Geocoding Index For Read-write Shape
    IXW ERDAS IMAGINE Toolbar Setting
    IZD Intrexx Application Export Format
    IZE IZArc Encrypted Archive Format
    IZS 1st Page 2000 JavaScript Example
    IZZ Isadora Media Control Project Format
    IZZY Isadora Project Format