| ims | Adobe Premiere Media Cache |
| IMS Content Packaging Data |
| IncrediMail Skin Data |
| imsp | Survey Designer Survey Data |
| imt | EGSEING Image Mode Data |
| imtl | iClone Material Template Data |
| imu | Inertial Explorer Waypoint IMU Raw Data |
| imw | Imageware Surfacer 3D CAD Surface Data |
| IncrediMail Sound File |
| imx | SAS/IML Workshop Matrix Data |
| in | CFAST Input Data |
| SmartGENERATOR Template |
| UnForm Submission Data |
| in2d | Netgen 2D Geometry Data |
| in4 | InfoBlaster IN4 Data |
| in7 | OxMetrics Human-readable Data |
| ina | MS-DOS Data |
| inb | Delft3D Initial Bed Composition Data |
| inc | Altair FEKO PREFEKO Include Data |
| JAWS Include Data |
| Microsoft Backup Incremental Backup Data |
| POV-Ray Include File |
| Total Commander Language Data |
| WITE32 Include Data |
| inchi | IUPAC International Chemical Identifier Data |
| incl | BBEdit Markup Include |
| ind | LaTeX Processed Index Data |
| Lotus Notes List Data |
| Maple Repository Index File |
| Microsoft Windows Shared Database |
| SQL Script Indexes |
| TINA Library Index |
| Zemax Input Data |
| indbc | Alteryx Designer Packaged In-DB Connections Data |
| index | DICT Index File |
| MySQL Binlog Index Data |
| WOW! Diagnostic Index Data |
| indexarrays | Mac OS X Spotlight Index Data |
| indk | Adobe InDesign Keyboard Shortcut Set |
| inds | Adobe InDesign Snippet |
| indx | CALDB Index |
| Microsoft Mail Index Data |
| inetloc | Mac OS X Finder Internet Location |
| inf | Adobe Type Manager Font Information |
| OS/2 IPF Hypertext Help System Data |
| PTC Creo Information Data |
| Ulead Photo Explorer Thumbnail Info |
| infini-d | Infini-D 3.0 Scene |
| info | Drupal Module Information Data |
| PTC Creo Parts Info Data |
| Spider File Storage Index |
| WOW! Diagnostic Firmware Module Info |
| ZoomBrowser EX Image Index Data |
| inf_loc | Windows Driver Information Cache File |
| ing | MasterCook Ingredients Data |
| ini | Google Picasa Album Info |
| init | WebMoney Keeper CLASSIC Temporary Keys Data |
| inix | Adobe InDesign INIX Data |
| inj | DAZ Studio 3D Morph Injection Data |
| injb | Adobe InDesign Job Bag Data |
| ink | CorelDraw Pantone Reference Fills Data |
| InkML Data |
| Mimio Studio Ink Data |
| Tablet PC Digital Ink |
| inl | Inspiration Custom Symbol Library |
| inline | Base64 Encoded Inline Image |
| inlx | Adobe InDesign Interchange Library |
| inmr | iNMR Data |
| inms | Adobe InDesign Menu Set |
| inn | Lumion Thumbnail |
| ino | Inno Setup Script |
| inp | Abaqus/CAE Input Data |
| Autodesk AutoCAD Civil 3D Adjustment Factors Data |
| CHARMM Input Data |
| EnCorr Input Data |
| FRANC2D Mesh Data |
| Gretl Script |
| MacMolPlt GAMESS Input Format Data |
| MAME Replay Data |
| PTV VISSIM Network Data |
