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Alphabetic File Extension List

This list will take for a moment to be fully loaded as the file extension lists are quite long. These lists contain information about the extension name, the name of the program, and the creator's company. Click on the extension to see the detail page. The total extensions in this list: 48.

Extension Information
HCR Half-fold Card File
HCR HydroCAD Stormwater Modeling System Rainfall Definition (HydroCAD Software Solutions LLC)
HD Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
HDF Hierarchical Data Format File
HDF Amiga Hardfile Image
HDMP WinXP Trouble Report
HDP HDL Designer Project File (Mentor Graphics Corp.)
HDR Photoshop (Adobe Systems Incorporated)
HDR Photomatix HDR Image (HDRsoft)
HDS XMap Hierarchical Dataset (Delorme)
HDS Hierarchical Data System
HEX Magellan GPS Receiver Flash Upgrade File (Thales Navigation, Inc.)
HEX Hex Dump
HEX Smart Touch Analyze and Retrieve Tool (START) Classic Operator Software Update (HySecurity)
HFS Macintosh Disk Image on CD
HLP UNIX Help File
HLP Stata Statistical Software Help File (Stata Corporation)
HLP Windows Help File (Microsoft Corporation)
HMK Hallmark Card Studio File (Creative Home)
HMT HighMAT (Microsoft Corporation)
HP HP Graphics Language (Plotter)
HPD HotDocs PDF Document (Matthew Bender & Company, a member of the LexisNexis Group)
HPG Hide Photos Encrypted Photo Container (Bolide Software)
HPGL HP Graphics Language (Plotter)
HPI GEM Font Information
HPP Printer Control Language Vector Image (Hewlett-Packard)
HPP C++ Builder 6 Program Header (Borland Software Corporation)
HPP InfoMgr Database File (RESystems, Inc.)
HQX Macintosh BinHex 4 Compressed Archive
HSC HYSYS Simulation (Aspen Technology, Inc.)
HSC HSC Tracker 2-op FM Music File
HSC HelpScribble Project Source (JGsoft - Just Great Software)
HST WordPerfect (Corel Corporation)
HST Symantec Anti-Virus Live Update File (Symantec Corporation)
HST History File
HTA Hemera Thumbnail Archive (Hemera Technologies Inc.)
HTA Hypertext Application
HTC HTML Component
HTM Hypertext Markup Language
HTML Hypertext Markup Language
HTML Mozilla (Netscape) Bookmark File (
HTT Hypertext Template File (Microsoft Corporation)
HWL HttpWatch HTTP Watch Log (Simtec Limited)
HWL Corel Shared Writing Tools 9.0 File
HWP Hangul Word Processor File (Haansoft)

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