| imh | IncrediMail Contacts Export Data |
| imi | IncrediMail Graphic Data |
| imi | Magellan eXplorist Map Image |
| imiss | PLINK Individual-based Missing Data Report |
| imk | IncrediMail License Key |
| imm | IncrediMail Deleted Message Data |
| immodules | GTK+ Input Method Modules Data |
| imn | IncrediMail Notifier |
| imotion | iClone Motion Capture Data |
| imovielibrary | iMovie Library Data |
| impx | Bentley Map Import XML Data |
| imr | IncrediMail Notifier Data |
| imr | Inertial Explorer IMU Data |
| ims | Adobe Premiere Media Cache |
| ims | IncrediMail Skin Data |
| imsp | Survey Designer Survey Data |
| imt | EGSEING Image Mode Data |
| imu | Inertial Explorer Waypoint IMU Raw Data |
| imw | IncrediMail Sound File |
| in | SmartGENERATOR Template |
| 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 |
| inc | POV-Ray Include File |
| inchi | IUPAC International Chemical Identifier Data |
| incl | BBEdit Markup Include |
| ind | LaTeX Processed Index Data |
