No company

HVA - Tiberian Sun Voxel Animation Control File
HFA - ERDAS IMAGINE Hierarchical File Architecture
HRP - Handy Recovery Recovered Partion Information
H5 - HDF5 File
HMW - Homeword for DeskMate
HFO - Hollywood FX Object File
HND - Hallo Northern Sky
HNS - Hallo Northern Sky
HPRJ - Heroglyph Project File
HTMENX - egis Encrypted HTM File
HTMLENX - egis Encrypted HTML File
HAPTAR - People Putty Haptek Character
HOD - Homeworld Hardpoint/Object Data
HOTSPOT - Homeworld Cursor Informaiton
HS3 - HyperRESEARCH
HSD - HSD+CP Aero-HSD Configuration File
HTD - HyperTRANSCRIBE Project File
HYM - Scandata 3D Scanner File
HYS - Smart Touch Analyze and Retrieve Tool
HYS - Multi-Parametric Toolbox HYSDEL File
HYS - Globe HySales Client File
HYS - TriboIndenter Air Indent Electrostatic Force Constant Setting
HWL - Hangman Deluxe Word List
HUY - Eto Dlia Vas
HVD - chosenOS HoverNews Skin File
HVD - CMT Surveyor's Assistant 1.x/2.0x Job
HTR - HTML-like script
HTR - Motion Analysis Software Skeletal File
HTT - Microsoft Hypertext Template
HTX - Extended Hypertext Template
HTX - MS FrontPage Database Results HTML-like query script.
HTZ - HTML Editor Archive
HUF - Huffman Encoded/Compressed File
HULL - Halflife Map Collision Hull File
H - Header
H! - Flambeaux Tutorial Database
H++ - C++ Header File
H-- - Sphinx C-- Header File
H0 - Magix Musstu File
H1 - Bruker Aspect NMR Data File
H1 - Magix Musstu File
H16 - VC98 Include 16-bit File
H32 - BC45 32-bit Include File
H3M - Game Map File
H4C - Heroes of Might and Magic Map File
H4R - Possible Container for .MP3 Files
H6C - SPP File
HA - Compressed Archive
HAD - MixlleniumEngine (Haydee) Web Server Module Style File
HAF - HEAT Archive File
HAI - NTgraph Nt09b-2b EMX Library File
HAK - GameHack File
HAK - Neverwinter Nights File
HAL - Hyper Access Lite OS/2 Data File
HAL - Mortyr Archive
HAM - Image File
HAM - Novell NetWare Disk Drivers NPA
HAN - Viewpoint Headline Studio
HAP - Hamarsoft HAP 3.x Compressed Archive
HAT - Formula 1 Car Race 2001 Log Hat File
HAT - HAT (HOORA Analysis Tool) Model
HAY - MixlleniumEngine (Haydee) Web Server Module Content File
HBB - HAHTtalk Object File
HBC - Home Buyers Calculator Suite
HBK - Humanic Software Accounting Data
HBX - Starmoney Macro file
HBZ - Starmoney Macro file
HC - BI/Suite Hypercube
HC - Header File
HC - High Resolution Cantone TIFF Bitmap
HCD - C Poet Examples Advanced Inc File
HCL - Handwritten Claims Log
HCM - IBM HCM Configuration
HCOM - Macintosh Sound
HCR - Half-fold Card File
HCR - IBM HCD/HCM Production Configuration
HCT - Symantec Anti-Virus Live Update File
HD2 - Curious Labs Poser Hand File
HDAT - Objective Analysis Package Data File
HDF - Help Development Kit Help File
HDF - Hierarchical Data Format File
HDF - Procomm Plus Alternate Download File Listing
HDF - Amiga Hardfile Image
HDL - Procomm Plus Alternate Download File Listing
HDM - Handheld Markup Language File
HDML - Handheld Markup Language File
HDMP - WinXP Trouble Report
HDO - Helpdesk-One File
HDP - Magix Music/Video
HDR - Apollo HDRU
HDR - ArcInfo Binary
HDR - Egret Data File
HDR - MicroSim PCBoard Hole-Drill Schedule Report
HDR - PC-File+ Database Header
HDR - Procomm Plus Message Header
HDRU - Apollo HDRU
HDS - Hierarchical Data System
HDV - Formula 1 Car Race 2001 Season01 Vehicles Arrows File
HDX - Help Index
HEA - Fifa 2001 Data Feart Legal Screeen
HEC - Grafic Pvquan Quant File
HED - Hi-Eddi
HED - HighEdit Document
HED - ReliaSoft RG
HEH - Scarlett Expert System Compiler Facts File
HEP - Novell NetWare Help Librarian Data File
HER - Grafic GIF File
HEX - Hex Dump
HEX - HUGO Game File
HEX - Macintosh BinHex 2.0 File
HF - HF File
HFB - Ralcgm File
HFI - HP Font Info
HFS - Macintosh Disk Image on CD
HFV - Simulated Macintosh Volumes on PC Hard Drive
HFX - US Robotics Rapid Comm Voice Data File
HFZ - Pinnacle Studio Video Editing File
HGH - Star Wars - Tie Fighter High Score
HGL - DN Highlight Groups Definition
HGL - HP Graphics Language
HGS - HighGrow Virtual Seed File
HGT - Shuttle Radar Topography Mission Data
HH - C++ Header
HH - HammerHead Drumloop File
HH - Help Topic Map File
HHH - Power C Precompiled Header
HHL - Visual Basic File
HHTML - Realmedia Adstream HTML File
HI - High Scores
HI - Spy-CD CD Search Index File
HI1 - Spy-CD CD Search Database File
HI2 - Spy-CD CD Search Database File
HI4 - Spy-CD CD Search Database File
HIA - Spy-CD CD Search Database File
HIB - Spy-CD CD Search Database File
HIC - Spy-CD CD Search Database File
HIG - High Scores
HIH - Spy-CD CD Search Database File
HIM - Spy-CD CD Search Database File
HIN - Spy-CD CD Search Database File
HIP - Spy-CD CD Search Database File
HIPS - Bitmap Graphic
HIQ - Spy-CD CD Search Database File
HIR - C64 Hires Bitmap Graphic
HIR - Hidden Icon Resource
HIS - DN History of Executing/Viewing/Editing
HIS - Spy-CD CD Search Database File
HIT - HitPlayer Audio File
HIT - Nonags Dialog Killer Data File
HIW - Spy-CD CD Search Database File
HIX - System SYSUTIL File
HIZ - Spy-CD CD Search Database File
HKC - HTML-KIT Auto Complete Short-cuts
HKI1 - WinHki Compressed File
HKI2 - WinHki Compressed File
HKI3 - WinHki Compressed File
HKT - egseing RB HK Data
HLB - VAX Help Library
HLF - BASIC QuickBAS QuickB01 File
HLL - Boulderdash Game File
HLM - Winhelp Vbhilfe File
HLN - Microstation Hidden Line File
HLP - HP-95LX Help File
HLX - ATI Radeon Video Driver Support File
HLX - Hyperlatex File
HLX - Multi-Edit Help File
HLX - Hollex Cartridge Atari Cartridge Image File
HLZ - Multi-Edit Packed Help File
HM - Windows Help Context IDs used by MAKEHM.EXE.
HM2 - Help & Manual Help File Project
HM3 - Help & Manual Help File Project
HMI - Descent Human Machine Interfaces MIDI File
HMM - Procomm Plus Alternate Mail Read Option Menu
HMP - Descent Human Machine Interfaces MIDI File
HMP - Technics Sx KN 6000 Keyboard Home Page File
HMP - Frontier: First Encounters Music File
HMS - HMS Archiware File
HMS - MS SMS Inventory File
HMS - Stentura 8000 or Stentura 8000LX Deposition File
HMX - MixlleniumEngine (Haydee) Web Server Module Template File
HM~ - Help&Manual Backup Help File Project
HNC - CNC Program File Heidenhain Dialog
HNF - Humax Receiver Settings
HNV - TheWord & Bible Companion Hebrew Names Version Bible
HO - Knowledge Explorer Knowledge Representation Hierarchy Outline
HO - Magix Music/Video
HOF - Hall Of Fame
HOG - Descent Mission File
HOG - Lucas Arts Dark Forces WAD File
HOR - Horoscope
HOT - Mosaic Internet Address
HP - HP Graphics Language
HP - Thor Database Primary Hash File
HP$ - NTgraph Visual C Wizzard File
HP- - HP Distribution Binary File
HP-UX - HP-UNIX File
HP8 - HP NewWave Write ASCII Roman8 Character Set
HPD - Harry Potter Related
HPF - HotLine Partial Download File
HPG - HP Graphics Language
HPGL - HP Graphics Language
HPH - Designer Graphics System2 File
HPI - GEM Font Information
HPI - Total Annihilation Saved Game
HPJ - Help Project File
HPJ - HP LaserJet Print-to-File
HPJ - Visual Basic Help Project
HPK - Compressed Archive
HPL - HP Graphics File
HPLJ - Hewlett-Packerd LaserJet Vector Image
HPM - HP NewWave Emm Text
HPM - Procomm Plus Alternate Main Menu for Privileged Users
HPM - Procomm Plus Alternative Menu
HPM - Quaestor 1.x High Performance Map
HPP - C++ Program Header
HPP - InfoMgr Database File
HPP - Zortech C++ Header
HPPCL - Hewlett-Packard Printer Control Language Vector Image
HPR - RoboHELP Configuration File
HPUX - HP-UNIX File
HPW - CompuServe Home Page Wizard
HP_ - Winhelp Compressed File
HP~ - V-help File
HQP - CP/M Disc Utility Information
HQX - Macintosh BinHex 4 Compressed Archive
HR - TRS 80 Graphic
HR2 - Curious Labs Poser Hair File
HRC - SoftImage Model Geometry File
HRF - Hitachi Raster Format Graphic
HRH - C++ and Resources Common Header
HRL - Herolab EasyWin32
HRM - Netmino File
HRM - Procomm Plus Alternate Main Menu
HRT - Hornet Packer Module/Song
HRU - HRU Bitmap
HRX - Herolab EasyWin32
HRZ - Slow Scan Television
HS - Hugs Source Code
HS - Literate Haskell Source Code File
HS2 - Postering Monochrome Image
HSC - HSC Tracker 2-op FM Music File
HSE - Dreamweaver Snippet
HSI - Handmade Software Graphic File
HSI - HSI JPEG Bitmap
HSK - Nimbus 7 SAMS Data File
HSM - Assembly Language Header University of Waterloo Engineering convention.
HSP - HomeSite WWW Page Project
HSP - HSC Packed
HSQ - CAST Application Mining Suite
HSQ - Data File Associated with Qaz Trojan
HSR - RezeptAssist Import and Export File
HSS - Dreamweaver Snippet
HST - Corel QuickCorrect and Speller History File
HST - History File
HST - Host File
HST - Image Alchemy Handmade Software Graphics Histogram
HST - Netscape History File
HST - Procomm Plus History File
HST - Symantec Anti-Virus Live Update File
HST - Yahoo Messenger History
HT3 - HTML File
HTA - Hypertext Application
HTA - Tonline BSW4 File
HTACCESS - Apache Access Configuration
HTB - HttpBrowser Database File
HYP - Hyper Compressed Archive
HYP - Hypertext File
HYP - Hyphenation File
HZ - Chinese Text
H_ - Winhelp Compressed File
H__ - C++ Header Seldom used C++ Header
HWL - Corel Shared Writing Tools 9.0 File
HW - Stanford University EPGY Homework
HWCFG - VersaPro Hardware Configuration File
HWD - Hollywood Presentation File
HVD - HerdView Event Data File
HVD - ISIS Hviews File
HUN - Dataview File
HUS - Home Embroidery Format
HTC - HTML Component
HTF - HTF Sounding File
HTF - Virtual Hypertext Font
HTF - WebBase File
HTI - WebBase File
HTI - Win Help Related File
HTM - Hypertext Markup Language
HTML - Hypertext Markup Language
HTMLS - Server-side HTML File
HTN - Micrografx Picture Publisher 8 printstyles file
HXX - C++ Header
HX_ - C Poet Compressed Disk1 File
HY1 - Ventura Publisher Hyphenation Algorithm
HY2 - Ventura Publisher Hyphenation Algorithm
HWP - Hangul (Korean) Word Processor File
HX - EARS Component File
HX - THOR Database Cross-reference Hash File
HXK - Help TOC/Index File
HXM - Descent2 HAM File
HXM - Procomm Plus Alternate Protocol Selection Menu for All Users
HXT - Help TOC/Index File
HX - SurRender3D Database File

20-20 Technologies

HDL - Giza Specifier Hidden Line Drawings

2005 Thales Navigation, Inc.

HEX - Magellan GPS Receiver Flash Upgrade File

Accelrys Software Inc.

HESSIAN - Insight II Hessian File
HESSIANX - Insight II Hessian File
HIS - Insight II Dynamics Trajectory History File

Adobe

HDR - Photoshop
HPF - PageMaker HP LaserJet Font
HSS - Photoshop Hue/Saturation Information
HYP - Acrobat Spelling File

Amiga

HOL - Personal Paint Dutch Language User Interface File
HRV - Personal Paint Croatian Language User Interface File
HUN - Personal Paint Hungarian Language User Interface File

Amiga, Inc.

HAM - Amiga Hold and Modify Image

Aspen Technology, Inc.

HSC - HYSYS Simulation

Atari

HOB - Star Trek: Birth of the Federation Ship Graphic

Ates Software

HBK - HandyCafe Database File

Autodesk, Inc.

H - ADS Include File
HDI - AutoCAD Heidi Device Interface

Beijing Herosoft Zongheng Network Technology Co., Ltd

HSR - Hero Screen Recorder Screen Capture File

Bentley Systems, Incorporated

HMR - GeoTIFF Bitmap File
HLN - MicroStation Hidden Line File

Best Software CRM Division

HDB - ACT! History File
HK5 - ACT! Database File

Borland Software Corporation

HPP - C++ Builder 6 Program Header

BreakPoint Software, Inc.

HBK - Hex Workshop Hex Editor Bookmark File

BSD CONCEPT

HR5 - Heredis 2000 Family History File

Clear Methods, Inc.

H2O - Water Web Program File

Conitec Corporation

HMP - 3D GameStudio Terrain Entity

Corel

HST - WordPerfect
HYC - WordPerfect Hyphenation File
HYD - WordPerfect for Windows Hyphenation Dictionary

Corel Corporation

HST - WordPerfect
HYC - WordPerfect Hyphenation File
HYD - WordPerfect for Windows Hyphenation Dictionary

David Peterson

HFB - Hell Fighter Battle File

Delorme

HDS - XMap Hierarchical Dataset

Domas Savickas

HNC - NoteCenter Note File
HNE - NoteCenter Encrypted Note File

Electronic Arts (Maxis)

HIT - The Sims Sound File
HOT - The Sims Sound File
HSM - The Sims Sound File

ESRI

HDR - ArcView Header File

FAR Group

HLF - FAR Manager Help File

Fishstick Games

HOC - High Octane Race Course

Freebyte

HJT - TreePad Hypertext Database File

Haansoft

HWP - Hangul Word Processor File

Haliplex Communication Systems

HPK - HPXUpgrade Service Pack Fileset

Han-soft Software

HBK - Auto Backup Backup Archive

Hanspeter Imp

HKI - WinHki Compressed Archive

Haptek, Inc.

HTR - People Putty Haptek Character

Harvard Graphics

HCX - Harvard Graphics Chart XL Chart
HDW - Harvard Graphics Draw Vector Graphics
HFX - Harvard Graphics F/X File

Heiland electronic GmbH

HEX - SPLITGRADE Upgrade File

Hemera Technologies Inc.

HPI - Hemera Photo-Object Image
HTA - Hemera Thumbnail Archive

Herne Data Systems Ltd.

HDK - MAXI Disk Disk Image

Hewlett-Packard

HPP - Printer Control Language Vector Image

Hewlett-Packard Development Company, L.P.

HPD - HP Document

Hilgraeve Inc.

HT - HyperTerminal Data File

Hotsprings Inc.

HBM - Hotline Book Mark

Hover Inc.

HVD - HoverDesk Theme File

Huelix Solutions Private Ltd

HXCONV - Huelix Audio Converter Session Information

Hummingbird Ltd.

HEP - HostExplorer Telnet Session Profile

Husqvarna Viking

HUS - Husqvarna Designer I Embroidery Machine Format

HydroCAD Software Solutions LLC

HUH - HydroCAD Stormwater Modeling System Unit Hydrograph
HCC - HydroCAD Stormwater Modeling System Storage Chamber Definition
HCE - HydroCAD Stormwater Modeling System Hydrograph File
HCI - HydroCAD Stormwater Modeling System IDF File
HCP - HydroCAD Stormwater Modeling System Project File
HCR - HydroCAD Stormwater Modeling System Rainfall Definition
HCU - HydroCAD Stormwater Modeling System Units Definition File

Hypercube, Inc.

HIN - HyperChem Molecule File

Hyprotech, LTD.

HSC - HYSYS Simulation

HySecurity

HEX - Smart Touch Analyze and Retrieve Tool

IBM

HDK - OS/2 Saved SKF Format File

IMAGINE Éditions

HDC - HelloDOC Medical Software File
HDD - HelloDOC Medical Software File
HDI - HelloDOC Medical Software File

InstallShield Software Corporation

HDR - InstallShield Setup Header

Intuit

HHC - TurboTax Contents File
HIF - Quicken On-line File

ISYS Computers

HWM - Hillwalker/MapWise/Alpiniste Own Raster Map Parameters
HWR - Hillwalker/MapWise/Alpiniste ISYS Route Card
HWM - Hillwalker/MapWise/Alpiniste/PhotoMaps Own Raster Map Parameters
HWR - Hillwalker/MapWise/Alpiniste/PhotoMaps ISYS Route Card

j2 Global Communications, Inc.

HOT - eFax Messenger Fax

JGsoft - Just Great Software

HSC - HelpScribble Project Source

Knife Edge Software

HELI - RealFlight Radio Control Airplane Description

Mathsoft Engineering & Education Inc.

HBK - MathCAD Handbook

Matthew Bender & Company, a member of the LexisNexis Group

HDA - HotDocs Auto-Assemble File
HDI - HotDocs Auto-Install File
HDL - HotDocs Library File
HFD - HotDocs Form Document
HFT - HotDocs Form Template
HPD - HotDocs PDF Document
HPT - HotDocs PDF Template

Microsoft

HAZ - Flight Simulator Texture File
HCW - HTML Help Workshop Conversion Wizard Macro
HEL - Hellbender Saved Game
HHC - HTML Help Table of Contents
HHK - HTML Help Index
HHP - HTML Help Workshop Project
HHS - HTML Help Samples
HL$ - Compressed DOS Help File
HLP - Windows Help File
HLX - Visual C++ Syntax Coloring Instructions
HMT - HighMAT
HSH - IIS NNTP Hash File
HWPROJ - Visual Studio .NET Help Project
HXC - Help 2 Project/Collection File
HXD - Help 2 Validator File
HXF - Help 2 Include File
HXG - Help 2 Filter Cache
HXH - Help 2 Merged Hierarchy
HXI - Help 2 Compiled Help File
HXK - Help 2 Keyword Index
HXL - Help 2 Registered Namespaces List
HXS - Help 2 Compiled Help File
HXT - Help 2 Table of Contents
HXV - Help 2 Virtual Topic Definition
HXW - Help 2 Merged Keyword Index

Microsoft Corporation

HAZ - Train Simulator Hazard File
HIV - Windows NT Registry Hive
HLP - Advisor Help File
HMT - HighMAT
HXS - Help 2 Compiled Help File

Motorola, Inc.

HS - RAZR Flex File

Mozilla.org

HTML - Mozilla

Nero AG

HDB - Nero HD-Backup

Netscape

HPF - NetHelp2 Project File

NewTek

HVX - Lightwave 3D Hypervoxel

Oracle

HHA - HyperHub Archive
HHS - HyperHub Subkit

PCNetWork

HS - HSnapshot Screen Snapshot

Phil Doyle a.k.a. MrJolly

HDAT - vStaticIP Data File

Pinnacle Systems, Inc.

HFX - Hollywood FX Special Effects File
HFZ - Pinnacle Studio HollywoodFX Plug-In Video Editing File

Pulse Data International Ltd.

HT - BrailleNote Visual Display File

ResearchWare, Inc.

HS2 - HyperRESEARCH

Scientific Software Development

HPR - ATLAS.ti 4.x Project File
HPR5 - ATLAS.ti 5.0 Project File

SJ NAMO, Inc.

HSB - HandStory Suite eBook File

Slick Software

HGP - HighGrow

Smith Micro Software, Inc.

HFX - HotFax Fax

SodaBush

HCSS - Hyper Color Swatch Set

Sony

HMA - ATRAC3plus Encoded Audio File

Stata Corporation

HLP - Stata Statistical Software Help File

Stateline Software

HMP - Help Magician Pro Project

Steinberg Media Technologies GmbH.

HSB - HALion Sampler File

Stellent, Inc.

HCSP - Content Server Web Page

Structural Desktop, Inc.

HLD - Structural Desktop Saved Data

Survey Design Associates Ltd.

H5B - SuperHeat 5 Building File

TDK

HLI - MOJO 620 Logo

Tech Soft America

HMF - HOOPS Metafile
HSF - HOOPS Stream File

TiANWEi

HIV - RegShot Registry Hive File

Ventris, Inc.

HSZ - Handyscript Skin

WL | Delft Hydraulics

HIS - SOBEK Simulation History