| .hlx |
ATI Radeon Video Driver Support File |
| .hs |
Haskell Script |
| .hex |
Hexadecimal Source File |
| .hps |
HPL Script |
| .hyp |
HYPER Compressed Archive |
| .hdk |
HotDocs Registration File |
| .hxa |
Microsoft Help 2 Attribute Definition File |
| .hxc |
Microsoft Help 2 Collection Definition File |
| .hxe |
Microsoft Help 2 Sample Definition File |
| .hxk |
Microsoft Help 2 Index File |
| .hxt |
Microsoft Help 2 Table of Contents File |
| .hlb |
VMS / VAX Help Library |
| .h1q |
Microsoft Help Merged Query Index File |
| .hdx |
Delphi MultiHelp Index File |
| .ics |
Calendar File |
| .iml |
IntelliJ IDEA Module |
| .idx |
Index File |
| .in |
Spyware File |
| .imapmbox |
IMAP Mailbox |
| .inetloc |
Internet Location |
| .ing |
MasterCook Ingredients File |
| .info |
Texinfo Document |
| .imy |
iMelody Ringtone File |
| .itc |
iTunes Cover Flow Data File |