| .goomod |
World of Goo Add-on |
| .glox |
Microsoft Office SmartArt Graphics Layout File |
| .gcsx |
Microsoft Office SmartArt Color File |
| .graphmlz |
Zip Compressed GraphML File |
| .gadgeprj |
Gadge It Project |
| .honmod |
HON Modification Manager File |
| .hcl |
HotDocs Clause Archive |
| .hmxz |
Help & Manual Compressed Project |
| .htmlz |
Zipped HTML eBook |
| .h5u |
Heroes of Might and Magic V Mod File |
| .h5m |
Heroes of Might and Magic V Map |
| .htb |
Audacity Help File |
| .iwd |
Call of Duty Game Data File |
| .ipa |
iOS Application |
| .idml |
Adobe InDesign Markup Language File |
| .iba |
Lectra Clothing Design Pieces File |
| .isz |
Zipped ISO Disk Image |
| .ipg |
iPod Game File |
| .i5z |
IUCLID 5 Import/Export File |
| .ipsw |
iPod and iPhone Software Update File |
| .ip |
IconPackager Theme File |
| .ita |
IconTweaker Theme Archive |
| .isx |
SimulationX Project |
| .ifczip |
Compessed IFC File |