| Extension |
Information |
|
I00
|
(100-103) Winphone Phonebook |
|
IAB
|
|
|
IAF
|
Quikscribe Intelligent Audio File (Quikscribe Pty Ltd) |
|
IAF
|
IAFA Document |
|
IAF
|
Windows Live Mail Contacts Database (Microsoft Corporation) |
|
IAM
|
Inventor CAD (Autodesk, Inc.) |
|
ICA
|
Citrix Independent Computer Architecture File (Citrix) |
|
ICA
|
Identity Compass Encrypted Answers (Identity Compass International GmbH.) |
|
ICC
|
ArtIcons Pro Icon Collection (Aha-Soft) |
|
ICC
|
ICC Profile Format File |
|
ICC
|
Apple ColorSync 2.0 (Apple Inc.) |
|
ICE
|
Archive |
|
ICE
|
ICEOWS Compressed File (Raphaël et Béatrice Mounier) |
|
ICF
|
Cheyenne AntiVirus |
|
ICF
|
RapidForm INUS Compression Format File (INUS Technology, Inc.) |
|
ICF
|
Insane Chat Saved Conversation |
|
ICL
|
Clean File |
|
ICL
|
Icon Library File |
|
ICM
|
Windows Color Matching Control (Microsoft Corporation) |
|
ICO
|
Windows Icon (Microsoft Corporation) |
|
ICO
|
GIMP Icon (The GIMP Team) |
|
ICONS
|
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
|
ICS
|
iCalendar Calendar Data (Apple Inc.) |
|
ICS
|
SwiftView ICS Command File (SwiftView, Inc.) |
|
ICS
|
CopyControl Generic Copier Floppy Disk Image (Microcosm Ltd.) |
|
ID
|
AOL Instant Messenger (AIM) Buddy Icon (America Online, Inc.) |
|
ID
|
3D Graphic |
|
ID
|
Notes ID File (IBM) |
|
IDB
|
A-B-CD Info File |
|
IDE
|
ideCAD Architectural Architectural 3D Design Model (ideYAPI Ltd. Sti.) |
|
IDE
|
Grand Theft Auto III Model IDs and Properties (Rockstar Games) |
|
IDE
|
ideCAD Structural Structural 3D Design Model (ideYAPI Ltd. Sti.) |
|
IDF
|
ARTiSAN Real-time Studio ID |
|
IDF
|
Printed Circuit Board Data Exchange File |
|
IDF
|
InspireData File (Inspiration Software, Inc.) |
|
IDL
|
OMG CORBA Interface Definition Language |
|
IDL
|
CRiSP Harvest File |
|
IDS
|
IDA Imported Names Format |
|
IDW
|
Inventor CAD (Autodesk, Inc.) |
|
IDW
|
IntelliDraw Vector Graphic (Adobe Systems Incorporated) |
|
IDX
|
Java Applet Cache Index (Sun Microsystems, Inc.) |
|
IDX
|
Ca Visual Objects Platform for Developer (CAVO) Index File (CA) |
|
IDX
|
Index |
|
IES
|
IESNA Photometric File Data (Illuminating Engineering Society) |
|
IFC
|
All Image Compressed Image File (Towodo Software) |
|
IFF
|
Sun TAAC Image File |
|
IFF
|
Amiga Sound (Amiga) |
|
IFF
|
Amiga Bitmap Graphic (Amiga) |
|
IFM
|
IFS Applications Message File (IFS AB) |
|
IFM
|
Brighterion iPrevent Fraud Model |
|
IFM
|
Shana Informed Filler |
|
IFO
|
DVD Info File |
|
IFO
|
BioWare Aurora Engine Information File (BioWare Corp.) |
|
IFS
|
InfoSlips Secure Information Package (InfoSlips) |
|
IFS
|
Fractint Iterated Function System Fractal |
|
IGES
|
Initial 2D/3D Graphics Exchange Specification |
|
IGES
|
IGES-Format |
|
IGS
|
IGES-Format |
|
IGS
|
CAD Overlay |
|
IIF
|
QuickBooks Import/Export Interchange File (Intuit, Inc.) |
|
IIS
|
|
|
ILK
|
Ilink Program Format Outline (Microsoft Corporation) |
|
IMA
|
WinImage File |
|
IMA
|
ImageMixer (Pixela Corporation) |
|
IMA
|
AOL Instant Messenger (AIM) Grey Scale Image (America Online, Inc.) |
|
IMG
|
Bitmap Graphic |
|
IMG
|
CloneCD Image (SlySoft Inc.) |
|
IMG
|
Grand Theft Auto III File (Rockstar Games) |
|
IML
|
ACT! Internet Mail Message File (Best Software CRM Division) |
|
IMOVIE
|
|
|
IMP
|
Improv Spreadsheet (IBM) |
|
IMP
|
Gemstar eBook Publisher eBook (Gemstar eBook) |
|
IMP
|
Adobe Audition Convolution Effect (Adobe Systems Incorporated) |
|
IN
|
smartGENERATOR Template (BITPlan) |
|
IN
|
CFAST Input File (U.S. Commerce Department) |
|
IN
|
McAfee Antivirus |
|
INC
|
PSpice Include File (Cadence Design Systems, Inc.) |
|
INC
|
Internet Connection File |
|
INC
|
Active Server Include File |
|
INC
|
JAWS for Windows Text File (Freedom Scientific) |
|
IND
|
InDesign Publication (Adobe Systems Incorporated) |
|
IND
|
dBASE IV |
|
IND
|
Foxmail E-Mail Box Index |
|
INDD
|
InDesign Document (Adobe Systems Incorporated) |
|
INDESIGN
|
|
|
INF
|
Autorun File |
|
INF
|
Information or Setup File |
|
INF
|
Pro/ENGINEER Temporary File (PTC) |
|
INI
|
Initialization/Configuration File |
|
INI
|
Simple Exchange Rate Information File Format (SERIFF) |
|
INK
|
Tablet PC Digital Ink File (Microsoft Corporation) |
|
INK
|
Mimio Ink File |
|
INK
|
Intkey Startup Configuration File (DELTA Authors) |
|
INP
|
Abaqus/CAE Input File (Dassault Systèmes) |
|
INP
|
InPage Document (Concept Software) |
|
INP
|
ABAQUS Input File (ABAQUS, Inc.) |
|
INS
|
1st Reader Install Script |
|
INS
|
Systems Management Server (SMS) Advertising Instruction File (Microsoft Corporation) |
|
INS
|
IIS Internet Communications Settings (Microsoft Corporation) |
|
INSTALL
|
Likely a Text File |
|
INT
|
Signature Semi-compiled Program |
|
INT
|
Devastation Language File (NovaLogic) |
|
INT
|
Delphi Interface Unit (Borland Software Corporation) |
|
INX
|
ACL for Windows Index |
|
INX
|
InstallShield Compiled Rules File (Acresso Software Inc.) |
|
IP
|
IconPackager Theme (Stardock Corporation) |
|
IP
|
Interactive Physics Data (Design Simulation Technologies, Inc.) |
|
IPA
|
iPhone/iPod Touch Application (Apple Inc.) |
|
IPD
|
BlackBerry Backup File (Research In Motion Limited) |
|
IPF
|
SMS Installer Script (Microsoft Corporation) |
|
IPF
|
Grand Theft Auto III Animation Data (Rockstar Games) |
|
IPF
|
F-Secure Incremental Policy File (F-Secure) |
|
IPK
|
internet PacKage Archive (direct Netware Group) |
|
IPK
|
Nintendo DS Packed Images |
|
IPR
|
SMART Ideas Document (SMART Technologies Inc.) |
|
IPR
|
LiveType Animation File (Apple Inc.) |
|
IPR
|
InstallShield Project (Acresso Software Inc.) |
|
IPS
|
IPScript File |
|
IPS
|
Game Patch File |
|
IPS
|
International Patching System Binary Patch File |
|
IPT
|
InterPaint Multicolor Image |
|
IPT
|
Inventor CAD (Autodesk, Inc.) |
|
IQY
|
Internet Inquiry (Microsoft Corporation) |
|
IQY
|
Excel Web Query (Microsoft Corporation) |
|
IRF
|
Phonecat2 Ocp97 File |
|
IRF
|
RoomBox 6 IR Code File (Living Control) |
|
IRS
|
WordPerfect Resource File (Corel Corporation) |
|
IRX
|
Brewer Lamp Irradiation File |
|
ISF
|
Inspiration Concept Map (Flowchart) Document (Inspiration Software, Inc.) |
|
ISF
|
Tektronix Instrument Data File (Tektronix, Inc.) |
|
ISF
|
InfoNet Snapshot File (Wallingford Software Ltd.) |
|
ISM
|
SimulationX Encrypted Model (ITI Gesellschaft für ingenieurtechnische Informationsverarbeitung mbH) |
|
ISM
|
Image System |
|
ISO
|
Virtual PC Virtual CD-ROM Image (Microsoft Corporation) |
|
ISO
|
Easy CD Creator Disc Image (Sonic Solutions) |
|
ISO
|
ISO-9660 CD Disc Image |
|
ISS
|
Caseware IDEA IDEAScript |
|
ISS
|
Inno Setup Script (Jordan Russell's Software) |
|
ISS
|
InstallShield Response File (Acresso Software Inc.) |
|
ISU
|
Easy CD Creator 4 Uninstall File |
|
ISZ
|
WinMount Compressed ISO Image (WinMount International Inc.) |
|
ISZ
|
UltraISO ISO Zipped Format (EZB Systems, Inc.) |
|
ITC
|
iTunes Cover Flow Data File (Apple Inc.) |
|
ITL
|
ITEM ToolKit Library (ITEM Software, Inc.) |
|
ITL
|
IntelliTipster League File (IntelliForecast Labs) |
|
ITL
|
iTunes Music Database File (Apple Inc.) |
|
IVR
|
RealPlayer Internet Video Recording (RealNetworks, Inc.) |
|
IWD
|
Call of Duty Map - Game Data Archive (Activision, Inc.) |
