| Estensione del file | Autore/Produttore | Descrizione del file |
|---|---|---|
| Estensione H | N/A | C/C++ Header Format |
| Estensione H++ | N/A | Unusual C++ Header |
| Estensione H-263 | N/A | H.263 Encoded Video |
| Estensione H263 | N/A | H.263 Encoded Video |
| Estensione H0 | MAGIX | Movie Edit Pro Waveform Information Format |
| Estensione H00 | ARM Holdings plc | ARM EPROM HEX |
| Estensione H01 | ARM Holdings plc | ARM EPROM HEX |
| Estensione H04 | General Electric Company | GE FIX32 Historical |
| Estensione H08 | General Electric Company | GE FIX32 Historical |
| Estensione H10 | H&R Block | At Home Canada 2010 Tax Return Format |
| Estensione H11 | H&R Block Canada | At Home 2011 Tax Return Format |
| Estensione H12 | H&R Block Canada | At Home 2012 Tax Return Format |
| Estensione H1C | Microsoft Corporation | Windows Vista File Related To Assistance Platform (AP) Help |
| Estensione H1D | N/A | Microsoft Windows |
| Estensione H1F | Microsoft Corporation | Microsoft Windows Assistance Platform Client Help |
| Estensione H1H | Microsoft Corporation | Microsoft Windows Merged Hierarchy Help |
| Estensione H1K | Microsoft Corporation | Keyword Index - Microsoft Windows Assistance Platform Client Help Related |
| Estensione H1Q | Microsoft | Microsoft Help Merged Query Index Format |
| Estensione H1S | Microsoft | Microsoft Windows Assistance Platform Client Help Format |
| Estensione H1T | Microsoft Corporation | Microsoft Windows Assistance Platform Client Help Related |
| Estensione H1V | Microsoft Corporation | Task Metadata - Microsoft Windows Assistance Platform Client Help Related |
| Estensione H1W | Microsoft Corporation | Microsoft Windows Keyword Index |
| Estensione H260 | N/A | Video Recording |
| Estensione H261 | N/A | H.261 Video Format |
| Estensione H263 | N/A | H.263 Video Format |
| Estensione H264 | N/A | H.264 Video Format |
| Estensione H2DRUMKIT | Hydrogen Team | Hydrogen Drum Kit |
| Estensione H2O | Liquid Entertainment | Battle Realms Game Data Format |
| Estensione H2P | Urs Heckmann | Zebra Preset |
| Estensione H2SONG | Hydrogen Team | Hydrogen Drum Notes |
| Estensione H2W | N/A | H2testw |
| Estensione H3B | Line 6, Inc. | POD HD300 Bundle |
| Estensione H3C | The 3DO Company | Heroes Of Might And Magic 3 Campaign |
| Estensione H3D | Altair Engineering, Inc. | Altair HyperView 3D Model |
| Estensione H3E | Line 6, Inc. | POD HD300 Preset |
| Estensione H3M | New World Computing | Heroes Of Might And Magic 3 Map Format |
| Estensione H4B | Line 6, Inc. | POD HD400 Bundle |
| Estensione H4E | Line 6, Inc. | POD HD400 Preset |
| Estensione H4M | Capcom Co., Ltd. | Resident Evil Zero Game |
| Estensione H4R | New World Computing | Heroes Of Might And Magic 4 Data Format |
| Estensione H5 | N/A | Hierarchical Data Format Version 5 |
| Estensione H5E | Line 6, Inc. | POD HD500 Preset |
| Estensione H5S | Line 6, Inc. | POD HD500 Set |
| Estensione H86 | ARM Holdings plc | CP/M |
| Estensione HA | N/A | HA Compressed Archive |
| Estensione HAK | BioWare | BioWare Aurora Engine |
| Estensione HAL | HansaWorld | HansaWorld Enterprise HAL Code Format |
| Estensione HAM | N/A | Descent 2 Resource Format |
| Estensione HAML | Sublime HQ Pty Ltd | HTML Abstraction Markup Language |
| Estensione HANDLEBARS | N/A | Handlebars Template |
| Estensione HANG | Apple, Inc. | Apple Mac OS X Terminal |
| Estensione HAP | Hamarsoft | HAP Compressed File Archive |
| Estensione HAR | Rick Meyers | E-Sword Harmony Resource |
| Estensione HARDDISK | N/A | Boxer For Mac Harddisk |
| Estensione HARX | Rick Meyers | E-sword Harmony |
| Estensione HAS | N/A | Haskell Script Format |
| Estensione HASH | Guidance Software Inc. | EnCase Forensic Drive Image Hash |
| Estensione HAT | Sony Corporation | Formula 1 Car Race 2001 Log Hat |
| Estensione HATHDL | Hentai@Home Team | Hentai@Home Download |
| Estensione HAV | Haenlein-Software | Video Recorder Video |
| Estensione HAZ | Microsoft Studios | Microsoft Flight Texture |
| Estensione HBC | Xceleon Technologies | HyperBac Compressed Archive Format |
| Estensione HBC2 | Xceleon Technologies | HyperBac Compressed Archive |
| Estensione HBE | Xceleon Technologies | HyperBac Compressed/encrypted Archive |
| Estensione HBK | Mathsoft | Mathcad Handbook Format |
| Estensione HBM | Hibernate Project | Hibernate Script |
| Estensione HBN | Oracle Corporation | Java Hibernate |
| Estensione HBR | Mario Carbajal | HaxBall Replay |
| Estensione HBX | N/A | BinHex Encoded Format |
| Estensione HBZ | Star Finanz GmbH | StarMoney Macro |
| Estensione HCB | HyperOs Systems | HyperOS Compressed Backup |
| Estensione HCC | HydroCAD Software Solutions | HydroCAD Storage Chamber Definition Format |
| Estensione HCE | HydroCAD Software Solutions | HydroCAD Hydrograph Data Format |
| Estensione HCF | Zaplots | Compact Ham Library |
| Estensione HCFG | HoDoKu Team | HoDokK Configuration |
| Estensione HCG | HCSoft Programación, s.l., | HClab Chart |
| Estensione HCI | HydroCAD Software Solutions | HydroCAD IDF Data Format |
| Estensione HCL | HotDocs | HotDocs Library Format |
| Estensione HCOM | N/A | Sound Tools HCOM Audio |
| Estensione HCP | HydroCAD Software Solutions | HydroCAD Project Format |
| Estensione HCR | HydroCad Software Solutions | HydroCAD Stormwater Modeling System Rainfall Definition |
| Estensione HCS | Health Canada | NHP ESubmission Builder Submission Package |
| Estensione HCT | Symantec Corporation | Symantec Liveupdate |
| Estensione HCU | HydroCAD Software Solutions | HydroCAD Hydrograph Units Definitions Format |
| Estensione HCW | Microsoft Corporation | HTML Help Workshop Conversion Wizard Macro |
| Estensione HCX | Harvard Graphics | Harvard ChartXL Chart Format |
| Estensione HD2 | Smith Micro | Poser Hand Pose Format |
| Estensione HDA | Matthew Bender & Company | HotDocs Document File Format |
| Estensione HDB | HansaWorld | HansaWorld Enterprise Database Format |
| Estensione HDC | Simpli Software Inc. | HD Tach Benchmark |
| Estensione HDD | Parallels | Parallels Workstation Virtual Hard Disk Format |
| Estensione HDE | Wagers & Associates, Inc. | NAUPA File Encryptor Encrypted |
| Estensione HDF | N/A | Hierarchical Data Format |
| Estensione HDF4 | The HDF Group | HDF4 |
| Estensione HDF5 | The HDF Group | HDF5 |
| Estensione HDI | Matthew Bender & Company | HotDocs Auto-install Format |
| Estensione HDK | HotDocs | HotDocs Registration Format |
| Estensione HDL | N/A | HotDocs Library Format |
| Estensione HDM | Openwave | HDML Handheld Device Markup Language Format |
| Estensione HDML | Openwave | Handheld Device Markup Language |
| Estensione HDMOV | Apple | Apple QuickTime HD Movie Format |
| Estensione HDMP | Microsoft | Microsoft Windows Heap Dump Format |
| Estensione HDP | Microsoft | HD Photo |
| Estensione HDPMX | HotDocs | HotDocs Publisher Mapping XML Format |
| Estensione HDR | HDRsoft | High Dynamic Range Image Format |
| Estensione HDRP | Ohanaware | HDRtist Graphic Format |
| Estensione HDRU | N/A | Apollo HRDU Image Format |
| Estensione HDS | Microsoft | Windows Digital Right Management Format |
| Estensione HDT | Adobe Systems | Photoshop HDR Toning Preset Format |
| Estensione HDUMX | HotDocs | HotDocs User Mapping XML Format |
| Estensione HDV | JVC | High Definition Video Format |
| Estensione HDX | Autodesk | Delphi MultiHelp Index Format |
| Estensione HDZ | Smith Micro | Poser Compressed Hand Pose Format |
| Estensione HE4 | The HDF Group | HDF4 |
| Estensione HEA | Electronic Arts, Inc. | Fifa 2001 Data |
| Estensione HEARTSSAVE-MS | Microsoft | Hearts Saved Game Format |
| Estensione HEB | N/A | DEcomp 3D Scene Data |
| Estensione HED | N/A | Hi-Eddi Image |
| Estensione HEF | FrontRange Solutions USA Inc. | HEAT Export |
| Estensione HELP | Apple | Unix Help Format |
| Estensione HELPCFG | Adobe Systems Incorporated | Adobe AIR Help Configuration |
| Estensione HELPINDEX | Mariner Software, Inc. | Mariner Software Narrator Index |
| Estensione HEP | Novell, Inc. | Novell NetWare Help Librarian Data |
| Estensione HES | N/A | TurboGrafx-16 Audio |
| Estensione HET | SYNAMETIRCS | WinSQL HTML Export Template |
| Estensione HEU | Adobe Systems Incorporated | Adobe Flash Player Cache Metadata |
| Estensione HEX | N/A | Hex Dump Format |
| Estensione HF | N/A | HF Image Format |
| Estensione HFA | ERDAS, Inc. | Erdas Imagine Hierarchical |
| Estensione HFB | David Peterson | Hell Fighter Battle |
| Estensione HFC | H-JTAG team | H-JTAG Configuration |
| Estensione HFD | HotDocs | HotDocs Form Document Format |
| Estensione HFMX | N/A | HFM.NET Configuration |
| Estensione HFO | Avid Technology, Inc. | Pinnacle Hollywood FX Object |
| Estensione HFP | N/A | XnView Filter |
| Estensione HFS | N/A | MacImage Macintosh HFS Disk Image Format |
| Estensione HFSS | Ansoft | Ansoft HFSS Project |
| Estensione HFT | HotDocs | HaftiX Cross-stitch Pattern |
| Estensione HFV | Apple | Virtual Mac Hard Drive Format |
| Estensione HFX | Harvard Graphics | Harvard Graphics F/X |
| Estensione HG | N/A | HP Graphics Language |
| Estensione HG1 | Electronic Arts, Inc. | Hellgate: London Saved Game |
| Estensione HGD | N/A | IP Camera Video |
| Estensione HGH | LucasArts Entertainment Company, LLC | Star Wars: Tie Fighter High Score |
| Estensione HGL | Hewlett-Packard | Hewlett-Packard Graphics Language Format |
| Estensione HGP | Slick Software | HighGrow Plant |
| Estensione HGS | Harvard Graphics | Harvard Graphics Graphic |
| Estensione HGT | N/A | Shuttle Radar Topography Mission Data SRTM Format |
| Estensione HGZ | Esri | ArcMap GIS |
| Estensione HH | N/A | C++ Header Format |
| Estensione HHC | N/A | HTML Help Table Of Contents Format |
| Estensione HHH | Power C | Power C Precompiled Header Format |
| Estensione HHK | N/A | Microsoft HTML Help Index Format |
| Estensione HHL | Microsoft Corporation | Visual Basic |
| Estensione HHP | Microsoft Corporation | Microsoft HTML Help Project |
| Estensione HHPACK | Stealth | HTC Home Extension |
| Estensione HHS | Microsoft Corporation | Microsoft HTML Help Workshop Sample |
| Estensione HHSL | Evert Etienne | Hockey High Score List Format |
| Estensione HHT | Microsoft | Microsoft Help And Support Center HHT Format |
| Estensione HI | The MAME Team | High Scores Format |
| Estensione HIC | HicEst Instant Prototype Computing | HicEst Script |
| Estensione HID | Sony Ericsson | Sony Ericsson Configuration Archive Format |
| Estensione HID2 | N/A | KeepSafe Encrypted |
| Estensione HIF | N/A | Quicken Online Format |
| Estensione HIL | Mediamond | Deluxe Ski Jump 3 Hill |
| Estensione HIM | Gravity Interactive Inc. | ROSE Online Highmaps |
| Estensione HIN | Hypercube, Inc. | HyperChem HIN Chemical Modeller Input |
| Estensione HIP | Side Effects Software | Houdini Project Format |
| Estensione HIPNC | Side Effects Software | Houdini Apprentice Format |
| Estensione HIPS | N/A | Bitmap |
| Estensione HIR | N/A | Hires C64 Image Format |
| Estensione HIS | PHDCC | FindinSite Database Definition Format |
| Estensione HISAWSAVE | Her Interactive, Inc. | Nancy Drew Saved Game |
| Estensione HISF | CSE | DL_POLY History |
| Estensione HISTORY | The Eclipse Foundation | Eclipse IDE Local History |
| Estensione HISU | CSE | DL_POLY History |
| Estensione HIT | N/A | The Sims Sound Format |
| Estensione HIV | Microsoft | Windows NT Registry Hive |
| Estensione HJT | Freebyte.com | TreePad Editor Format |
| Estensione HKC | HTML-Kit.com | HTML-KIT Auto Complete Short Cut |
| Estensione HKDB | Apple | Apple ITunes Database Format |
| Estensione HKE | Mindware Studios, s.r.o. | Painkiller Overdose Game |
| Estensione HKF | Microsoft Corporation | Microsoft.NET Framework |
| Estensione HKI | N/A | WinHKI Compressed Archive Format |
| Estensione HKI1 | N/A | WinHKI HKI1 Compressed Archive Format |
| Estensione HKI2 | N/A | WinHKI HKI2 Compressed Archive Format |
| Estensione HKI3 | N/A | WinHKI HKI3 Compressed Archive Format |
| Estensione HKL | N/A | RMCProfile Range Of Values |
| Estensione HKM | Havok | Havok Movie Format |
| Estensione HKS | HTML-Kit.com | HTML-KIT Plugin |
| Estensione HKX | Bethesda Softworks LLC | Skyrim Animation |
| Estensione HL | HeuristicLab | HeuristicLab Storage Format |
| Estensione HL$ | N/A | MS-DOS Compressed Help |
| Estensione HL1 | Valve Corporation | Half-Life Saved Game |
| Estensione HL6 | WellSight Systems Inc. | Horizontal.Log 6 |
| Estensione HLA | N/A | High Level Assembler Source |
| Estensione HLB | N/A | VAX VMS Help Library Format |
| Estensione HLC | European Southern Observatory | ESO MIDAS Help Command |
| Estensione HLD | Structural Desktop, Inc. | Structural Desktop Hold |
| Estensione HLF | Eugene Rosha | FAR Manager Help |
| Estensione HLK | Relic Entertainment Inc. | Warhammer 40k Dawn Of War 2 Animation |
| Estensione HLN | Bentley Systems, Incorporated | MicroStation Hidden Line |
| Estensione HLOG | VMware, Inc. | VMware Workstation Log |
| Estensione HLP | Microsoft | Help Format |
| Estensione HLQ | European Southern Observatory | ESO MIDAS Help Qualifier |
| Estensione HLSL | Microsoft | High Level Shader Language Source Code Format |
| Estensione HLT | N/A | Watcher Database Trades List |
| Estensione HLW | N/A | Win32/AMalum.EDHZ |
| Estensione HLX | N/A | ATI Radeon Video Driver Format |
| Estensione HLZ | Multi Edit Software Incorporated. | MultiEdit Packed Help |
| Estensione HM | Microsoft Corporation | Windows Help Context IDs |
| Estensione HM0 | MAGIX AG | MAGIX Audio Cleaning Lab Waveform |
| Estensione HM2 | EC Software GmbH | Help & Manual Help File Project |
| Estensione HM3 | N/A | Help & Manual Help File Project |
| Estensione HMA | Sony | Sony MiniDisc Audio Format |
| Estensione HMAP | N/A | Microsoft SharePoint Server 2007 Temporary |
| Estensione HMAPDIR | N/A | Microsoft SharePoint Server 2007 Temporary |
| Estensione HMAX | N/A | Custom 3ds Max Format |
| Estensione HMD | Grassland, Soil & Water Research Laboratory | SWAT Relative Humidity Input |
| Estensione HME | Microsoft | Smartphone Theme Format |
| Estensione HMF | Tech Soft 3D | HOOPS Metafile |
| Estensione HMGD | N/A | Microsoft Grammar |
| Estensione HMHD | Microsoft Corporation | Word Hyphenation Format |
| Estensione HMI | Human Machine Interfaces | HMI Audio Format |
| Estensione HMK | Hallmark | Hallmark Card Studio Card Format |
| Estensione HML | KS-Soft | HostMonitor TestList Format |
| Estensione HMMER | Richard Hughey - Kevin Karplus - Anders Krogh | SAM HMMER Format |
| Estensione HMMR | Richard Hughey - Kevin Karplus - Anders Krogh | SAM HMMR |
| Estensione HMP | Team17 Software | Worms Height Map Format |
| Estensione HMS | KS-Soft | HostMonitor Script Format |
| Estensione HMSD | N/A | Microsoft Dictionary |
| Estensione HMSKIN | EC Software GmbH | Help & Manual Help File Skin |
| Estensione HMT | Microsoft and Panasonic | HighMAT Format |
| Estensione HMX | N/A | Help & Manual Help File Project |
| Estensione HMXP | EC Software | Help & Manual Help File Uncompressed XML Project |
| Estensione HMXZ | EC Software | Help & Manual Help File Compressed XML Project |
| Estensione HMY | Altuit, Inc. | Hemingway Content Management System Plugin |
| Estensione HM~ | EC Software GmbH | Help&Manual Help Project Backup |
| Estensione HNC | N/A | NoteCenter Note |
| Estensione HND | Han Kleijn | HNSKY Deep Sky Database |
| Estensione HNF | N/A | HNF Split & Merge Channels |
| Estensione HNR | N/A | Teleatlas |
| Estensione HOB | Microprose | Star Trek Birth Of The Federation Ship Graphic Data |
| Estensione HOD | Relic Entertainment Inc. | Homeworld Object Data |
| Estensione HOG | N/A | Descent Hog Format |
| Estensione HOGG | Cryptic Studios, Inc. | Cryptic Studios Data |
| Estensione HOL | Microsoft | Microsoft Outlook Holiday Calendar Format |
| Estensione HONMOD | HON Modification Manager | Heroes Of Newerth Mod Format |
| Estensione HOP | Hippon SAS | Hippon Protected |
| Estensione HOT | Electronic Arts | The Sims Sound Format |
| Estensione HOTSPOT | Relic Entertainment Inc. | Homeworld Cursor Informaiton |
| Estensione HP | N/A | HP Graphics Language Plotter |
| Estensione HP1 | N/A | HP Graphics Language Plotter |
| Estensione HP2 | N/A | HP Graphics Language Plotter |
| Estensione HP? | Terry A. Davis | LoseThos C+ Header |
| Estensione HPC | Microsoft Corporation | System Dynamic Library |
| Estensione HPD | HotDocs | HotDocs PDF Document Format |
| Estensione HPF | N/A | High Performance FORTRAN Format |
| Estensione HPFS | IBM | OS/2 High Performance File System |
| Estensione HPG | Hewlett-Packard | HP Graphics Language Plotter Format |
| Estensione HPGL | Hewlett-Packard | Hewlett Packard Graphics Language Plot Format |
| Estensione HPGL2 | N/A | Hewlett Packard Graphics Language 2 |
| Estensione HPI | Hemera | Hemera Photo Image Format |
| Estensione HPJ | Microsoft | Microsoft Win Help Project Format |
| Estensione HPK | N/A | HPack Compressed Archive Format |
| Estensione HPL | Hewlett-Packard | Hewlett-Packard LaserJet Vector Image Format |
| Estensione HPLG | Apple, Inc. | Apple ITunes Device Plugin |
| Estensione HPM | Symantec Corporation | Procomm Plus Alternate Main Menu |
| Estensione HPO | Paul F. Kunz | HippoDraw Canvas Document |
| Estensione HPP | N/A | C++ Header Format |
| Estensione HPR | Adobe Systems Incorporated | RoboHelp Settings |
| Estensione HPRJ | proDAD Inc. | Heroglyph Project |
| Estensione HPROF | N/A | Java Heap Dump |
| Estensione HPS | Frictional Games | HPL2 Script |
| Estensione HPT | HotDocs | HotDocs PDF Template Format |
| Estensione HPX | MetaVR, Inc. | MetaVR 3D Model |
| Estensione HPZ | Major Mind Software | Helpinator Project |
| Estensione HQF | Cabin Logic LLC. | QuiltCAD Stitch |
| Estensione HQR | Electronic Arts, Inc. | Little Big Adventure HQR |
| Estensione HQX | N/A | Macintosh BinHex Archive |
| Estensione HR | Tandy | TRS 80 Image File Format |
| Estensione HR2 | Smith Micro | Poser Hair Format |
| Estensione HRC | Autodesk, Inc. | Autodesk Softimage Model 3D |
| Estensione HRD | MSC Software Corporation | MSC Patran Device-dependent Hardcopy |
| Estensione HRF | Hitachi | Hitachi CADCore Raster Format |
| Estensione HRL | Ericsson | Erlang Source Or Script Format |
| Estensione HRM | Polar Electro | Polar ProTrainer Pulse Rate Save |
| Estensione HRS | Wagers & Associates, Inc. | Holder Reporting System |
| Estensione HRU | N/A | HRU Image Format |
| Estensione HRX | Herolab GmbH | Herolab EasyWin32 |
| Estensione HRZ | Smith Micro | Poser Compressed Hair Format |
| Estensione HS | N/A | Literate Haskell Source Code Or Script Format |
| Estensione HS2 | ResearchWare | HyperRESEARCH Postering Monochrome Image Format |
| Estensione HSB | Steinberg Media Technologies | HALion Sampler Format |
| Estensione HSC | Aspen Technology | Aspen HYSYS Simulation Format |
| Estensione HSE | Adobe Systems Incorporated | Adobe Dreamweaver Snippet |
| Estensione HSF | Tech Soft 3D | HOOPS Stream Format |
| Estensione HSH | Microsoft | Windows Catalog Search Index Format |
| Estensione HSI | Handmade Software | Handmade Software Bitmap Image |
| Estensione HSM | Electronic Arts, Inc. | The Sims Sound |
| Estensione HSP | N/A | HSC Composer Packed By Number Six |
| Estensione HSQL | N/A | HtmSQL Html |
| Estensione HSR | HS-Soft | RezeptAssist Import Or Export |
| Estensione HSS | Adobe Systems Incorporated | Adobe Dreamweaver Snippet |
| Estensione HST | N/A | Yahooo Messenger History Format |
| Estensione HSTX | Altair Engineering, Inc. | Altair HyperStudy Package |
| Estensione HSV | Blizzard Entertainment, Inc. | Diablo: Hellfire Singleplayer Character Data |
| Estensione HSX | HBXL Construction Software | Health & Safety Xpert Project |
| Estensione HT | Hilgraeve | HyperTerminal Session Format |
| Estensione HT1 | Google Inc. | Google Desktop Application Data |
| Estensione HT4 | N/A | HTML Version 4 |
| Estensione HTA | Microsoft | HTML Program Format |
| Estensione HTACCESS | N/A | Apache Access Configuration Format |
| Estensione HTB | Audacity | Audacity Help Format |
| Estensione HTC | Microsoft | HTML Component Format |
| Estensione HTD | ResearchWare, Inc. | HyperTRANSCRIBE Project |
| Estensione HTG | Chaozz Software | HackTheGame Mission Pack Format |
| Estensione HTGROUP | Apache Software Foundation | Apache Server User Group |
| Estensione HTI | Microsoft Corporation | Microsoft Windows WinHelp Related |
| Estensione HTK | N/A | Hidden Markov Model Toolkit Speech Recognition |
| Estensione HTM | N/A | HTML Hypertext Markup Language Web Page Format |
| Estensione HTML | N/A | HTML Hypertext Markup Language Web Page Format |
| Estensione HTML0 | N/A | Book Designer E-book Format |
| Estensione HTML5 | N/A | HTML5 Hypertext Markup Language Revision 5 Source |
| Estensione HTMLENX | Egis Technology Inc. | Egis Encrypted HTML |
| Estensione HTMLS | N/A | HyperText Markup Language Document With Server-side Include |
| Estensione HTMLZ | N/A | Zipped HTML Format |
| Estensione HTMS | The PHP Group | PHP HTML Document |
| Estensione HTN | Micrografx, Inc. | Micrografx Picture Publisher 8 Print Style |
| Estensione HTP | Autodesk, Inc. | Autodesk Slope Template Definition |
| Estensione HTPASSWD | N/A | Apache Password Format |
| Estensione HTPL | IBM | IBM Rational Application Developer WebContent Theme |
| Estensione HTR | Microsoft Corporation | Microsoft Windows NT Password Services Script |
| Estensione HTRI | Heat Transfer Research, Inc. | HTRI Xchanger Suite Data Input |
| Estensione HTT | Microsoft | Microsoft HyperText Template Format |
| Estensione HTW | Microsoft Corporation | Windows |
| Estensione HTX | Microsoft | Microsoft FrontPage Database Results |
| Estensione HTXT | Hanvon | Hanvon WISEreader E-book Format |
| Estensione HTZ4 | Bersoft | HyperMaker Publication Format |
| Estensione HTZ5 | Bersoft | HyperMaker Document Format |
| Estensione HUD | SmartWare Corporation | SmartWare Dictionary |
| Estensione HUH | HydroCAD Software Solutions | HydroCAD Unit Hydrograph Definitions Format |
| Estensione HUL | Acclaim Games Inc. | Re-Volt Collision Data |
| Estensione HULL | Valve Corporation | Half-Life Map Collision Hull |
| Estensione HUN | N/A | Personal Paint Hungarian Language User Interface |
| Estensione HUP | Haihaisoft | Haihaisoft DRM-X Protected Video |
| Estensione HUS | Viking | Husqvarna Embroidery Format |
| Estensione HUV | Husqvarna Viking | Husqvarna Viking Designer Graphic |
| Estensione HV | Microsoft Corporation | Microsoft Windows Mobile Hive |
| Estensione HVA | Electronic Arts, Inc. | Command And Conquer Tiberian Sun Voxel Animation Control |
| Estensione HVC | HotDocs | ASCII Format |
| Estensione HVD | Thibaun Dijan | HoverDesk Theme |
| Estensione HVIF | Haiku, Inc. | Haiku Vector Icon Format |
| Estensione HVL | N/A | Commodore Amiga HivelyTracker Audio Module |
| Estensione HVPL | Apple | Apple ITunes Visual Plugin Format |
| Estensione HWD | Hedgewars Project | Hedgewars Game Replay Format |
| Estensione HWL | Corel Corporation | Corel WordPerfect Shared Writing Tools 9.0 |
| Estensione HWMAP | Hedgewars Project | Hedgewars Drawn Map Format |
| Estensione HWOF | Microsoft Corporation | Microsoft Office For Mac Help |
| Estensione HWP | Hancom | Hangul Document Format |
| Estensione HWS | Hedgewars Project | Hedgewars Saved Game Format |
| Estensione HWT | N/A | Huawei Ascend P6 Emotion UI Theme |
| Estensione HWX | Rockwell Automation, Inc. | RSNetWorx Registration |
| Estensione HX | Haxe.org | Haxe Source Code |
| Estensione HXA | Microsoft | Microsoft Help Attribute Definition Format |
| Estensione HXC | Microsoft | Microsoft Visual Studio Collection Definition Format |
| Estensione HXD | Microsoft Corporation | Microsoft Help Validator |
| Estensione HXE | Microsoft | Microsoft Help 2 Sample Definition Format |
| Estensione HXF | Microsoft Corporation | Microsoft Help Include |
| Estensione HXH | Microsoft Corporation | Microsoft Help Merged Hierarchy |
| Estensione HXI | Microsoft Corporation | Microsoft Help Compiled Storage |
| Estensione HXK | Microsoft | Microsoft Help 2 Keyword Index Format |
| Estensione HXL | Microsoft Corporation | Microsoft Help Registered Namespace List |
| Estensione HXM | N/A | Descent 2 Resource Modification Format |
| Estensione HXML | Haxe.org | HaXe Make |
| Estensione HXN | DAZ Productions | Hexagon Model Format |
| Estensione HXP | Haxe.org | HaXe Project |
| Estensione HXPROJ | FlashDevelop.org | FlashDevelop Flash Project |
| Estensione HXR | Microsoft Corporation | Microsoft Help Data |
| Estensione HXS | Microsoft | Microsoft Help Compiled Storage Format |
| Estensione HXT | Microsoft | Help Table Of Contents Format |
| Estensione HXV | Microsoft Corporation | Microsoft Help Virtual Topic Definition |
| Estensione HXW | Microsoft Corporation | Microsoft Help Attribute Definition |
| Estensione HXX | N/A | C++ Header Format |
| Estensione HY1 | Corel Corporation | Ventura Publisher Hyphenation Algorithm |
| Estensione HY2 | Corel Corporation | Ventura Publisher Hyphenation Algorithms |
| Estensione HYC | Corel Corporation | Corel WordPerfect Data |
| Estensione HYD | Corel Corporation | Corel WordPerfect Hyphenation Dictionary |
| Estensione HYDRA | Adobe Systems | Hydra Image Filter Program Format |
| Estensione HYM | N/A | Hymarc Scandata Scanner 3D Image Binary |
| Estensione HYP | N/A | Hyper Compressed File Archive |
| Estensione HYPE | Tumult | Hype Web Project Format |
| Estensione HYQ | SINTEF | CARE-S InfoWorks Hydrograph |
| Estensione HYV | HY-TEK Sports Software | Team Manager Meet Event Format |
| Estensione HZ | N/A | Chinese (Hanzi) Text |
| Estensione HZD | Halliburton | SeisWorks |
| Estensione H_ | Microsoft Corporation | Microsoft Winhelp Compressed |
| Estensione H__ | N/A | C++ Header |
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