Electro Designs

.I    Progress Include File
        Borland C++ Intermediate File
  .IAF  MS Outlook 97 and 2000 E-mail Account Settings
  .IAN  Sterling Software COOL Business Team Model File  
Sterling merged with Computer Associates.
  .IAX  IBM Image Access Executive Bitmap
  .IBA  MDE InfoHandler Infobase File
  .IBM  Image File
        Archdos Compressed File (IBM internal file)
  .ICA  Citrix File
        Image Object Content Architecture (IOCA) Graphics File
  .ICB  Targa Bitmap
  .ICC  Kodak Printer Image
        IronCAD Catalog
  .ICD  IronCAD 2D CAD File
  .ICE  Archive File
  .ICL  Icon Library File (various) ImageForge/IconForge  [Viewer]
  .ICM  Image Color Matching Profile File
        ICC Profile, Acer Monotor Drive
  .ICN  Icon Program
  .ICO  Icon  [Viewer]
  .ICS  Outlook Calendar File
        SwiftView Command File
        IronCAD 3D CAD File
        Inovate 3D CAD File
  .ID   Disk Identification File
        Lotus Notes ID File
  .IDA  MS Server File (default.ida is attacked by the Code Red Worm)
  .IDB  MS Developer Intermediate File
  .IDD  MIDI Instrument Definition
  .IDE  Integrated Development Environment Configuration File
        Sophos Anti-Virus Virus IDEntity File
        Borland C++ Project
  .IDF  MIDI Instruments Drivers File
  .IDQ  Internet Data Query File
  .IDW  Aldus IntelliDraw Vector Graphic
  .IDX  Index (multiple programs)
  .IEF  Image File
  .IES  Photometric File Data [Illuminating Engineering Society]
  .IFD  Jet Form Design Form
  .IFF  Graphic, Sound (Interchangeable File Format)  [Viewer]
        The Sims (Maxis) Object/Data File
        SUn TAAC Image File
  .IFO  DVD Info File (contains menus and other information)
  .IFP  KnowledgeMan Script
  .IFS  OS/2 System File
        IconForge Image EXE Library
        Yuvpak Compressed Fractal Image
  .IGF  Inset Systems Metafile
  .IGP  Igor Reader Sheet Music File
  .IGS  IGES-Format
  .IIF  QuickBooks for Windows Interchange File
  .III  Intel Phone Compatible
  .IL   Icon Library
  .ILB  Scream Tracker Data
  .ILK  MS ILink Program Format Outline
  .IM8  Sun Raster Graphic
  .IMA  WinImage File
        Mirage Vector Graphics
  .IMF  ImageForge/ImageForge Image EXE Library
  .IMG  Bitmap Graphic (several programs)  [Viewer]
        CloneCd Related File
  .IMP  Urban Chaos Game File
        Lotus Improv Spreadsheet
  .IMQ  ImageQ Presentation
  .IMV  Yahoo Instant Messenger IMVironment
  .IMW  Imageware Surfacer 3D CAD Surface Geometry
  .IN$  HP NewWave Install File
  .IN3  Harvard Input Device Driver (Harvard Graphics taken over by Serif)
  .INB  Vermont HighText Script
  .INC  Include File (various)
        Internet Connection File (used by ISPs)
  .IND  dBase IV or DataPerfect Index
  .INDD  Adobe Indesign Document
  .INF  Information or Setup File (many)
  .INI  Initialization file (many)
  .INK  Pantone Reference File
        Mimio Ink File [Electronic Whiteboard]
  .INL  MS Visual C++ Inline Function File
  .INP  Oracle Source Code
  .INS  Internet Communication Setting
        AdLib Instrument Music File
        WordPerfect File
        Ensoniq EPS Family Instrument
        Sample Cell / II Instrument
        InstallShield Script
        X-Internet Sign-up File
        Inspiration Mind Mapping Software File
        1st Reader Install Script
  .INT  Borland Interface Units
        Foxpro Code Page
        Signature Semi-compiled Program
        Intermediate Code used for syntax checking (various)
  .INTER  Interspector Project File
  .INTO  Interspector Object File
  .INX  Foxbase Index
  .IO   Compressed Archive  
  .IOB  Imagine File
        TDDD Format 3D Graphic Database
  .IOC  Instant ORGcharting! Organization Chart
  .IOF  Findit Document
  .ION  Text Program/Installation Description
        4DOS File Description
  .IP   IconPackager Icon Set
  .IPD  InstallPROG 6 EDBS Install Database
  .IPF  Microsoft SMS Installer Script 
(with System Management Server 2.0)
  .IPL  Corel Pantone Spot Reference Palette
        InstallPROG 6 EDBS File Library
  .IPR  IntelliJ Project XML File
  .IPX  Interactive Pictures Corporation AV File
  .IQY  Excel Web Query
  .IRS  WordPerfect Resource File
  .ISD  RapidFile Dictionary
  .ISH  Compressed Archive File
  .ISO  File List for CD-ROM
        ISO Buster File
        ISO-9660 Table
  .ISP  X-Internet Sign-up File
        Internet Communication Settings
  .ISS  InstallShield Response File
  .IST  Digitrakker Instrument File (by n-FaCToR)
  .ISU  InstallShield Uninstall Script
        Easy CD Creator 4 Uninstall File
        Netscape File
  .IT   Impulse Tracker Music Module
        Intalk Settings
  .ITF  Inside Tract File
        JPI TopSpeed Pascal Interface File
  .ITI  Impulse Tracker Instrument
  .ITS  Internet Document Set
        Impulse Tracker Sample
  .IV   VRML File
        Open Inventor File
  .IVF  Indeo Video File
  .IW   Iconware Application
        Idlewild Screensaver
  .IWA  IBM Writing Assistant Text
  .IWC  Installwatch Database (install monitor)
  .IWP  Wang Text File
  .IX   Framemaker Index File
        Paperport Search File
  .IZT  Izl Binary Token