| .idi |
EVA Controller Event Log |
| .iwa |
iWork Archive File |
| .imoviemobile |
iOS iMovie Project File |
| .ivf |
Indeo Video Format File |
| .ilbm |
Interleaved Bitmap Image |
| .int |
Fallout Compiled Script |
| .iaf |
Outlook Internet Account File |
| .iit |
Install Creator Project File |
| .iwz |
InstallShield Express 2 Project File |
| .iptheme |
IconPackager Raw Theme File |
| .imp |
Improv Spreadsheet |
| .iproject |
iClone Project File |
| .irp |
Internet Researcher Project File |
| .inct |
InCopy Template |
| .incp |
InCopy CS3 Package File |
| .indp |
Adobe InDesign CS3 Package File |
| .iup |
Fritz Update File |
| .inv |
INVedit File |
| .itms |
iTunes Music Store Link File |
| .iros |
Adobe Save For Web Settings File |
| .idpk |
Adobe InDesign Package for GoLive File |
| .incd |
InCopy Document |
| .icalevent |
iCal Event File |
| .icaltodo |
iCal To Do File |