Files starting with H

#	File Extension	Full File Name
1	File Extension H	C/C++/Objective-C Header Format
2	File Extension H++	Unusual C++ Header
3	File Extension H-263	H.263 Encoded Video
4	File Extension H263	H.263 Encoded Video
5	File Extension H0	Magix Music Studio Format
6	File Extension H00	ARM EPROM HEX
7	File Extension H01	ARM EPROM HEX
8	File Extension H02	Flash ROM Hex Data Format
9	File Extension H04	GE FIX32 Historical
10	File Extension H08	GE FIX32 Historical
11	File Extension H10	At Home Canada 2010 Tax Return
12	File Extension H11	At Home Canada 2011 Tax Return
13	File Extension H12	At Home Canada 2012 Tax Return
14	File Extension H1C	Windows Vista Format Related To Assistance Platform (AP) Help
15	File Extension H1D	Microsoft Windows
16	File Extension H1F	Microsoft Windows Assistance Platform Client Help
17	File Extension H1H	Microsoft Windows Merged Hierarchy Help
18	File Extension H1K	Keyword Index - Microsoft Windows Assistance Platform Client Help Related
19	File Extension H1Q	Microsoft Help Merged Query Index Format
20	File Extension H1S	Windows Assistance Platform Help Format
21	File Extension H1T	Microsoft Windows Assistance Platform Client Help Related
22	File Extension H1V	Task Metadata - Microsoft Windows Assistance Platform Client Help Related
23	File Extension H1W	Microsoft Windows Keyword Index
24	File Extension H260	Video Recording
25	File Extension H261	H.261 Video Format
26	File Extension H263	H.263 Video Format
27	File Extension H263+	H.263+ (H.263v2) Video Format Format
28	File Extension H264	H.264 Encoded Video Format
29	File Extension H265	H.265 High Efficiency Video Format
30	File Extension H26L	H.264 RAW Video Format
31	File Extension H2DRUMKIT	Hydrogen Drum Kit
32	File Extension H2O	Battle Realms Game Data Format
33	File Extension H2P	Zebra Preset
34	File Extension H2SONG	Hydrogen Drum Notes
35	File Extension H2W	H2testw
36	File Extension H3B	POD HD300 Bundle
37	File Extension H3C	Heroes Of Might And Magic 3 Campaign
38	File Extension H3D	Altair HyperView 3D Model
39	File Extension H3E	POD HD300 Preset
40	File Extension H3M	Heroes 3 Map Format
41	File Extension H4B	POD HD400 Bundle
42	File Extension H4E	POD HD400 Preset
43	File Extension H4M	Resident Evil Zero Game
44	File Extension H4R	Heroes Of Might And Magic IV Data Format
45	File Extension H5	Hierarchical Data Format Version 5
46	File Extension H5BPRJ	RAD Studio HTML5 Builder Project Format
47	File Extension H5C	Heroes Of Might And Magic V Campaign Data Format
48	File Extension H5E	POD HD500 Preset
49	File Extension H5M	Heroes Of Might And Magic V Game Data Format
50	File Extension H5P	Heroes Of Might And Magic V Game Data Format
51	File Extension H5S	POD HD500 Set
52	File Extension H5U	Heroes Of Might And Magic V Mod Archive Format
53	File Extension H64	Audioless H.264 Video Data Format
54	File Extension H6R	Heroes Of Might And Magic VI Game Data Format
55	File Extension H86	CP/M
56	File Extension HA	HA Compressed Archive
57	File Extension HAK	BioWare Aurora Engine
58	File Extension HAL	HansaWorld Application Language Format
59	File Extension HALOG	IEInspector HTTP Analyzer Log Format
60	File Extension HAM	Descent 2 Resource Format
61	File Extension HAM6	Amiga Hold-And-Modify 6 Picture Image Format
62	File Extension HAM8	Amiga Hold-And-Modify 8 Picture Image. Format
63	File Extension HAMACHI	Hamachi Client Data Format
64	File Extension HAML	HTML Abstraction Markup Language
65	File Extension HANDLEBARS	Handlebars Template
66	File Extension HANG	Apple Mac OS X Terminal
67	File Extension HAP	HAP Compressed Format Archive
68	File Extension HAR	E-Sword Harmony Resource
69	File Extension HARDDISK	Boxer For Mac Harddisk
70	File Extension HARX	E-sword Harmony
71	File Extension HAS	Haskell Script
72	File Extension HASH	EnCase Forensic Drive Image Hash
73	File Extension HAT	Formula 1 Car Race 2001 Log Hat
74	File Extension HATHDL	Hentai@Home Download
75	File Extension HAV	Video Recorder Video
76	File Extension HAY	Haydee Web Server Module Format
77	File Extension HAZ	Microsoft Flight Texture
78	File Extension HB	HotBasic Data Format
79	File Extension HBC	HyperBac Compressed Archive
80	File Extension HBC2	HyperBac Compressed Format Archive
81	File Extension HBE	HyperBac Compressed And Encrypted Archive
82	File Extension HBK	Mathcad Handbook Format
83	File Extension HBM	Hibernate Script
84	File Extension HBN	Java Hibernate
85	File Extension HBR	HaxBall Replay
86	File Extension HBS	JavaScript Handlebars.js Template Format
87	File Extension HBX	BinHex Encoded Format
88	File Extension HBZ	StarMoney Macro
89	File Extension HC	Header Data Format
90	File Extension HCA	Hammer Call Analyzer Network Traffic Data Format
91	File Extension HCB	HyperOS Compressed Backup
92	File Extension HCC	HydroCAD Prefab Chamber Data Format
93	File Extension HCE	HydroCAD Hydrograph Data Format
94	File Extension HCF	Compact Ham Library
95	File Extension HCFG	HoDokK Configuration
96	File Extension HCG	HClab Chart
97	File Extension HCI	HydroCAD IDF Data Format
98	File Extension HCJ	Hashcat Data Format
99	File Extension HCKX	Windows Hardware Certification Kit Package Format
100	File Extension HCL	HotDocs Clause Archive
101	File Extension HCOM	Sound Tools HCOM Audio
102	File Extension HCP	HydroCAD Project Format
103	File Extension HCR	HydroCAD Rainfall Curve Data Format
104	File Extension HCS	NHP ESubmission Builder Submission Package
105	File Extension HCT	Symantec LiveUpdate
106	File Extension HCU	Hydrograph Units Definitons Format
107	File Extension HCW	HTML Help Workshop Conversion Wizard Macro
108	File Extension HCX	ChartXL Chart
109	File Extension HD	VistaCodecs Data Format
110	File Extension HD2	Poser Hand Pose Format
111	File Extension HDA	HotDocs Auto-Assemble Format
112	File Extension HDB	HansaWorld Database Format
113	File Extension HDC	HD Tach Benchmark
114	File Extension HDD	Parallels Desktop Hard Disk Format
115	File Extension HDE	NAUPA Format Encryptor Encrypted
116	File Extension HDF	Hierarchical Data Format Format
117	File Extension HDF4	HDF4
118	File Extension HDF5	HDF5
119	File Extension HDG	HDGraph Data Format
120	File Extension HDI	Hard Disk Image
121	File Extension HDK	HotDocs Registration Format
122	File Extension HDL	HotDocs Library Format
123	File Extension HDM	HDML Format
124	File Extension HDML	Handheld Device Markup Language Format
125	File Extension HDMOV	QuickTime HD Movie Format
126	File Extension HDMP	Windows Heap Dump
127	File Extension HDP	HD Photo Format
128	File Extension HDPMX	HotDocs Publisher Mapping XML Format
129	File Extension HDR	High Dynamic Range Image Format
130	File Extension HDRP	HDRtist Graphic Format
131	File Extension HDRU	Apollo HRDU Image Format
132	File Extension HDS	Microsoft PlayReady Data Format
133	File Extension HDT	Photoshop HDR Toning Preset Format
134	File Extension HDUMX	HotDocs User Mapping XML Format
135	File Extension HDV	High Definition Video Format
136	File Extension HDX	Delphi MultiHelp Index Format
137	File Extension HDZ	Compressed Poser Hand Pose Format
138	File Extension HE4	HDF4
139	File Extension HEA	Fifa 2001 Data
140	File Extension HEAPSNAPSHOT	Heap Snapshot Data Format
141	File Extension HEARTSSAVE-MS	Microsoft Hearts Save Format
142	File Extension HEB	DEcomp 3D Scene Data
143	File Extension HED	Hi-Eddi Image
144	File Extension HEF	HEAT Export
145	File Extension HEI	Heitml Source Code Format
146	File Extension HEIC	High Efficiency Image Format
147	File Extension HEIF	High Efficiency Image Format Format Format
148	File Extension HEJS	HippoEDIT Bundle Format
149	File Extension HELP	Mac OS X Help Book
150	File Extension HELPCFG	Adobe AIR Help Configuration
151	File Extension HELPINDEX	Mariner Software Narrator Index
152	File Extension HEM	Holdem Manager Player Poker Statistic Data Format
153	File Extension HEMCR	HippoEDIT Macro Format
154	File Extension HEP	Novell NetWare Help Librarian Data
155	File Extension HEPRJ	HippoEDIT Project Format
156	File Extension HES	TurboGrafx-16 Audio
157	File Extension HET	WinSQL HTML Export Template
158	File Extension HEU	Adobe Flash Player Cache Metadata
159	File Extension HEVBS	HippoEDIT VB Script Format
160	File Extension HEVC	HEVC Video Data Format
161	File Extension HEWSP	HippoEDIT Workspace Format
162	File Extension HEX	Hexadecimal Source Format
163	File Extension HEXBOOK	HHD Software Hex Editor Bookmarks Format
164	File Extension HEXDWC	HHD Software Hex Editor Configuration Format
165	File Extension HEXHIS	Hex Editor Neo History Data Format
166	File Extension HEXLIC	Hex Editor Neo Data Format
167	File Extension HEXPATCH	Free Hex Editor Neo Patch Format
168	File Extension HEXSEL	Hex Editor Neo Data Format
169	File Extension HEXSET	Free Hex Editor Neo Data Format
170	File Extension HF	HF Image
171	File Extension HFA	Erdas Imagine Hierarchical
172	File Extension HFB	Hell Fighter Battle
173	File Extension HFC	H-JTAG Configuration
174	File Extension HFD	HotDocs Form Document
175	File Extension HFF	L3DT Heightfield Data Format
176	File Extension HFG	HeroForge Anew Character Data Format
177	File Extension HFMX	HFM.NET Configuration
178	File Extension HFO	Pinnacle Hollywood FX Object
179	File Extension HFP	XnView Filter
180	File Extension HFS	HFS Disk Image Format
181	File Extension HFSS	Ansoft HFSS Project
182	File Extension HFT	HotDocs Form Template
183	File Extension HFV	HFS Disk Image
184	File Extension HFX	Harvard Graphics F/X
185	File Extension HG	HP Graphics Language
186	File Extension HG1	Hellgate: London Saved Game
187	File Extension HGB	Amstrad CPC Bitmap Format Format
188	File Extension HGC1	XWE Data Format
189	File Extension HGD	IP Camera Video
190	File Extension HGDATA	Altair HyperGraph Data Format
191	File Extension HGH	Star Wars: Tie Fighter High Score
192	File Extension HGL	HP Graphics Language Format
193	File Extension HGM	Sublime Text Data Format
194	File Extension HGP	HighGrow Plant
195	File Extension HGR	Apple II Bitmap Image Format
196	File Extension HGS	Harvard Graphics Graphic
197	File Extension HGT	SRTM Elevation Data Format
198	File Extension HGZ	ArcMap GIS
199	File Extension HH	C++ Header Format
200	File Extension HH7	PcAnywhere Log Format
201	File Extension HHB	LIGPLOT Data Format
202	File Extension HHC	HTML Help Table Of Contents
203	File Extension HHH	Power C Precompiled Header Format
204	File Extension HHI	The Sims 4 Game Data Format
205	File Extension HHK	HTML Help Index
206	File Extension HHL	Visual Basic
207	File Extension HHM	HHsearch Database Format
208	File Extension HHP	Microsoft HTML Help Project
209	File Extension HHPACK	HTC Home Extension
210	File Extension HHR	HHsearch Results Format
211	File Extension HHS	Microsoft HTML Help Workshop Sample
212	File Extension HHSL	Hockey High Score List Format
213	File Extension HHT	Help And Support Center HHT Format
214	File Extension HI	MacMAME High Scores Format
215	File Extension HIC	HicEst Script
216	File Extension HID	Sony Ericsson Remote Settings Format
217	File Extension HID2	KeepSafe Encrypted
218	File Extension HIF	Quicken Online Format
219	File Extension HIL	Deluxe Ski Jump 3 Hill
220	File Extension HIM	ROSE Online Highmaps
221	File Extension HIN	HyperChem HIN Chemical Modeller Input
222	File Extension HIP	Houdini Project Format
223	File Extension HIPNC	Houdini Apprentice Format
224	File Extension HIPS	Bitmap
225	File Extension HIR	Hires C64 Image Format
226	File Extension HIRO	ARToolKit Hiro Marker Data Format
227	File Extension HIS	FindinSite Database Definition Format
228	File Extension HISAWSAVE	Nancy Drew Saved Game
229	File Extension HISF	DL_POLY History
230	File Extension HIST	MicroStrategy History Data Format
231	File Extension HISTORY	Eclipse IDE Local History
232	File Extension HISU	DL_POLY History
233	File Extension HIT	The Sims Sound Format
234	File Extension HIV	Windows Registry Hive Format
235	File Extension HIWACSAVE	Nancy Drew: Warnings At Waverly Academy Saved Game Format
236	File Extension HJT	TreePad 6 Database Format
237	File Extension HKC	HTML-KIT Auto Complete Short Cut
238	File Extension HKDB	Apple ITunes Library Format
239	File Extension HKE	Painkiller Overdose Game
240	File Extension HKF	Microsoft.NET Framework
241	File Extension HKI	WinHKI Archive
242	File Extension HKI1	WinHKI HKI1 Archive
243	File Extension HKI2	WinHKI HKI2 Archive
244	File Extension HKI3	WinHKI HKI3 Archive
245	File Extension HKL	RMCProfile Range Of Values
246	File Extension HKM	Havok Movie Format
247	File Extension HKP	Mentor Graphics Database Format
248	File Extension HKS	HTML-KIT Plugin
249	File Extension HKV	Eyesight IP Camera Video Format
250	File Extension HKX	Skyrim Animation
251	File Extension HL	HeuristicLab Storage Format
252	File Extension HL$	MS-DOS Compressed Help
253	File Extension HL1	Half-Life Saved Game
254	File Extension HL2	Half-Life 2 Saved Game Format
255	File Extension HL6	Horizontal.Log 6
256	File Extension HL7	HL7 Standard Format Data Format
257	File Extension HLA	High Level Assembler Source
258	File Extension HLB	VMS / VAX Help Library
259	File Extension HLC	ESO MIDAS Help Command
260	File Extension HLD	Structural Desktop Hold
261	File Extension HLF	FAR Manager Help
262	File Extension HLH	Ashampoo Photo Optimizer Data Format
263	File Extension HLK	Warhammer 40k Dawn Of War 2 Animation
264	File Extension HLN	MicroStation Hidden Line
265	File Extension HLOG	VMware Workstation Log
266	File Extension HLP	Windows Help Format
267	File Extension HLQ	ESO MIDAS Help Qualifier
268	File Extension HLR	Attributes Gigascreen Picture Image Format
269	File Extension HLS	SimCity 4 Hitlist Format
270	File Extension HLSL	High Level Shader Language Format
271	File Extension HLSLI	Microsoft Visual Studio Data Format
272	File Extension HLT	Watcher Database Trades List
273	File Extension HLW	Win32/AMalum.EDHZ
274	File Extension HLX	ATI Radeon Video Driver Support Format
275	File Extension HLZ	MultiEdit Packed Help
276	File Extension HM	Windows Help Context IDs
277	File Extension HM0	MAGIX Audio Cleaning Lab Waveform
278	File Extension HM10	Media Player Classic - BE RAW Video Format
279	File Extension HM12	Readme Document For Linux Driver Patch Format
280	File Extension HM2	Help & Manual Help Format Project
281	File Extension HM3	Help & Manual Help Format Project
282	File Extension HM91	H.265 RAW Video Format
283	File Extension HMA	Sony HI-MD Audio Format
284	File Extension HMAP	Microsoft SharePoint Server 2007 Temporary
285	File Extension HMAPDIR	Microsoft SharePoint Server 2007 Temporary
286	File Extension HMAX	Custom 3ds Max Format
287	File Extension HMD	SWAT Relative Humidity Input
288	File Extension HME	Smartphone Theme Format
289	File Extension HMF	HOOPS Metafile
290	File Extension HMGD	Microsoft Grammar
291	File Extension HMHD	Word Hyphenation Format
292	File Extension HMI	HMI Audio Format
293	File Extension HMK	Hallmark Card Studio Format
294	File Extension HML	HostMonitor TestList Format
295	File Extension HMMER	SAM HMMER Format
296	File Extension HMMR	SAM HMMR
297	File Extension HMP	Worms Height Map Format
298	File Extension HMS	HostMonitor Script Format
299	File Extension HMSD	Microsoft Dictionary
300	File Extension HMSKIN	Help & Manual Help Format Skin
301	File Extension HMT	HighMAT Format
302	File Extension HMV	Houdini Movie Format
303	File Extension HMX	Help & Manual 4 Project
304	File Extension HMXP	Help & Manual XML Project
305	File Extension HMXZ	Help & Manual Compressed Project
306	File Extension HMY	Hemingway Content Management System Plugin
307	File Extension HM~	Help&Manual Help Project Backup
308	File Extension HNC	NoteCenter Note
309	File Extension HND	HNSKY Deep Sky Database
310	File Extension HNF	HNF Split & Merge Channels
311	File Extension HNR	Teleatlas
312	File Extension HNUMKHOTEP	Globe 3 Ransomware Affected Format
313	File Extension HOB	Star Trek Birth Of The Federation Ship Graphic Data
314	File Extension HOD	Homeworld Object Data
315	File Extension HOG	Descent Mission Format
316	File Extension HOGG	Cryptic Studios Data
317	File Extension HOI4	Hearts Of Iron IV Saved Game Format
318	File Extension HOL	Outlook Holidays Format
319	File Extension HOLDEMSAVE-MS	Microsoft Windows Holdem Game Data Format
320	File Extension HONMOD	Heroes Of Newerth Mod Format
321	File Extension HONREPLAY	Heroes Of Newerth Replay Format
322	File Extension HOP	Hippon Protected
323	File Extension HOT	The Sims Sound Format
324	File Extension HOTKEYS	3D-Coat Hotkeys Settings Format
325	File Extension HOTSPOT	Homeworld Cursor Informaiton
326	File Extension HOUSEHOLDBINARY	The Sims 4 Game Data Format
327	File Extension HP	HP Graphics Language Plotter
328	File Extension HP1	HP Graphics Language Plotter
329	File Extension HP2	HP Graphics Language Plotter
330	File Extension HP3	Harpoon Classic Game Data Format
331	File Extension HP4	Harpoon Classic Game Data Format
332	File Extension HP6	Harpoon Classic Game Data Format
333	File Extension HP7	Harpoon Classic Game Data Format
334	File Extension HP9	Harpoon Classic Game Data Format
335	File Extension HP?	LoseThos C+ Header
336	File Extension HPB	Larry Bonds Harpoon – Commander’s Edition Game Data Format
337	File Extension HPC	System Dynamic Library
338	File Extension HPD	HotDocs PDF Document
339	File Extension HPF	High Performance Fortran Format
340	File Extension HPFS	OS/2 High Performance Format System
341	File Extension HPG	HPGL Plot Format
342	File Extension HPGL	HP Graphics Language Plotter Format
343	File Extension HPGL2	Hewlett Packard Graphics Language 2
344	File Extension HPI	Hemera Photo Objects Image Format
345	File Extension HPJ	Help Project Format
346	File Extension HPK	Tropico Game Archive
347	File Extension HPL	HP-GL Plotter Format
348	File Extension HPLG	Apple ITunes Device Plugin
349	File Extension HPM	Procomm Plus Alternate Main Menu
350	File Extension HPO	HippoDraw Canvas Document
351	File Extension HPP	C++ Header Format
352	File Extension HPR	RoboHelp Settings
353	File Extension HPRJ	Heroglyph Project
354	File Extension HPROF	Java Heap Dump
355	File Extension HPS	HPL2 Script
356	File Extension HPT	HotDocs PDF Template
357	File Extension HPUX	HP Unix Data Format
358	File Extension HPX	MetaVR 3D Model
359	File Extension HPZ	Helpinator Project
360	File Extension HP_	Compressed WinHelp Data Format
361	File Extension HQ	Apple ProRes 422 HQ Video Format
362	File Extension HQF	QuiltCAD Stitch
363	File Extension HQL	Microsoft Windows Azure Data Query Format
364	File Extension HQP	CP/M Disc Utility Information Data Format
365	File Extension HQR	Little Big Adventure HQR
366	File Extension HQX	BinHex 4.0 Encoded Format
367	File Extension HR	TRS-80 Image
368	File Extension HR2	Poser Hair Format
369	File Extension HRC	Autodesk Softimage Model 3D
370	File Extension HRD	MSC Patran Device-dependent Hardcopy
371	File Extension HRF	Hitachi Raster Format Format
372	File Extension HRL	Erlang Header Format
373	File Extension HRM	Polar ProTrainer Pulse Rate Save
374	File Extension HRS	Holder Reporting System
375	File Extension HRU	HRU Image Format
376	File Extension HRX	Herolab EasyWin32
377	File Extension HRZ	Compressed Poser Hair Format
378	File Extension HS	Haskell Script
379	File Extension HS2	HyperRESEARCH 2 Study Format
380	File Extension HS3	HyperRESEARCH Study Data Format
381	File Extension HS6LIC	HyperSnap License Format
382	File Extension HS7LIC	HyperSnap Data Format
383	File Extension HSB	HALion Sound Bank Format
384	File Extension HSC	Aspen HYSYS Simulation Format
385	File Extension HSE	Adobe Dreamweaver Snippet
386	File Extension HSF	HOOPS Stream Format Format
387	File Extension HSH	Windows Catalog Search Index Format
388	File Extension HSHADER	Microsoft Visual Studio Data Format
389	File Extension HSI	Handmade Software Bitmap Image
390	File Extension HSK	Huskey Truss & Building Supply Import Format
391	File Extension HSKAT	Knowledge Master Data Format
392	File Extension HSM	The Sims Sound
393	File Extension HSN	HostScan Hosts Data Format
394	File Extension HSP	HSC Composer Packed By Number Six
395	File Extension HSQL	HtmSQL Html
396	File Extension HSR	RezeptAssist Import Or Export
397	File Extension HSS	Adobe Dreamweaver Snippet
398	File Extension HST	History Format
399	File Extension HSTX	Altair HyperStudy Package
400	File Extension HSV	Diablo: Hellfire Singleplayer Character Data
401	File Extension HSX	Health & Safety Xpert Project
402	File Extension HT	HyperTerminal Session Format
403	File Extension HT1	Google Desktop Application Data
404	File Extension HT3	HTML Document Format
405	File Extension HT4	HTML Version 4
406	File Extension HTA	HTML Application
407	File Extension HTACCESS	Apache HTACCESS Format
408	File Extension HTB	Audacity Help Format
409	File Extension HTC	HTML Component Format
410	File Extension HTD	Adobe ExtendScript HTML
411	File Extension HTG	HackTheGame Mission Pack
412	File Extension HTGROUP	Apache Server User Group
413	File Extension HTI	Microsoft Windows WinHelp Related
414	File Extension HTK	Hidden Markov Model Toolkit Speech Recognition
415	File Extension HTM	Hypertext Markup Language Format
416	File Extension HTM2	Microsoft Office Component Format
417	File Extension HTMHJT	TreePad Format
418	File Extension HTML	Hypertext Markup Language Format
419	File Extension HTML-	Adobe Acrobat Reader HTML Data Format
420	File Extension HTML0	Book Designer Format
421	File Extension HTML5	HTML5 Hypertext Markup Language Revision 5 Source
422	File Extension HTMLENX	Egis Encrypted HTML
423	File Extension HTMLS	HyperText Markup Language Document With Server-side Include
424	File Extension HTMLZ	Zipped HTML EBook
425	File Extension HTMS	PHP HTML Document
426	File Extension HTM~	HTML Hypertext Markup Language Web Page Format
427	File Extension HTN	Micrografx Picture Publisher 8 Print Style
428	File Extension HTP	Autodesk Slope Template Definition
429	File Extension HTPASSWD	Apache HTACCESS Format
430	File Extension HTPL	IBM Rational Application Developer WebContent Theme
431	File Extension HTR	Microsoft Windows NT Password Services Script
432	File Extension HTRI	HTRI Xchanger Suite Data Input
433	File Extension HTS	Troj/DelSpy-E Data Format
434	File Extension HTT	Hypertext Template Format
435	File Extension HTW	Windows
436	File Extension HTX	HTML Extension Format
437	File Extension HTXT	Hanvon EBook Format
438	File Extension HTZ4	HyperMaker 4 Publication
439	File Extension HTZ5	HyperMaker 5 Publication
440	File Extension HUD	SmartWare Dictionary
441	File Extension HUGE	IFixit Renamed JPEG Picture Format
442	File Extension HUH	HydroCAD Unit Hydrograph Definitions Format
443	File Extension HUL	Re-Volt Collision Data
444	File Extension HULL	Half-Life Map Collision Hull
445	File Extension HUN	Personal Paint Hungarian Language User Interface
446	File Extension HUP	Haihaisoft DRM-X Protected Video
447	File Extension HUS	Husqvarna Embroidery Format
448	File Extension HUV	Husqvarna Viking Designer Graphic
449	File Extension HV	Microsoft Windows Mobile Hive
450	File Extension HV3	Honeyview Compressed Image Format
451	File Extension HVA	Command And Conquer Tiberian Sun Voxel Animation Control
452	File Extension HVC	ASCII Format
453	File Extension HVC1	H.265 RAW Video Format
454	File Extension HVD	HoverDesk Theme
455	File Extension HVIF	Haiku Vector Icon Format
456	File Extension HVJ	Havij Project Format
457	File Extension HVL	Commodore Amiga HivelyTracker Audio Module
458	File Extension HVPL	ITunes Visual Plug-in Format
459	File Extension HW	Marvelous Designer Hardware ID Data Format
460	File Extension HWAS	XWE Data Format
461	File Extension HWD	Hedgewars Demo Format
462	File Extension HWL	Corel WordPerfect Shared Writing Tools 9.0
463	File Extension HWMAP	Hedgewars Drawn Map Format
464	File Extension HWOF	Microsoft Office For Mac Help
465	File Extension HWP	Hanword Document
466	File Extension HWPML	Hangul Word Processor Markup Language Document Format
467	File Extension HWS	Hedgewars Saved Game
468	File Extension HWT	Huawei Ascend P6 Emotion UI Theme
469	File Extension HWX	RSNetWorx Registration
470	File Extension HX	Haxe Source Code
471	File Extension HX1	Microsoft Windows Data Format
472	File Extension HXA	Microsoft Help 2 Attribute Definition Format
473	File Extension HXC	Microsoft Help 2 Collection Definition Format
474	File Extension HXD	Microsoft Help Validator
475	File Extension HXE	Microsoft Help 2 Sample Definition Format
476	File Extension HXF	Microsoft Help Include
477	File Extension HXH	Microsoft Help Merged Hierarchy
478	File Extension HXI	Microsoft Help Compiled Storage
479	File Extension HXK	Microsoft Help 2 Index Format
480	File Extension HXL	Microsoft Help Registered Namespace List
481	File Extension HXM	Descent 2 Resource Modification
482	File Extension HXML	HaXe Make
483	File Extension HXN	Hexagon Model Format
484	File Extension HXP	HaXe Project
485	File Extension HXPROJ	FlashDevelop Flash Project
486	File Extension HXQ	Microsoft Help Merged Query Index Format
487	File Extension HXR	Microsoft Help Data
488	File Extension HXS	Help 2 Compiled Help Format
489	File Extension HXT	Microsoft Help 2 Table Of Contents Format
490	File Extension HXV	Microsoft Help Virtual Topic Definition
491	File Extension HXW	Microsoft Help Attribute Definition
492	File Extension HXX	C++ Source Code Header Format
493	File Extension HY1	Ventura Publisher Hyphenation Algorithm
494	File Extension HY2	Ventura Publisher Hyphenation Algorithms
495	File Extension HY3	Hy-Tek Data Format
496	File Extension HYC	Corel WordPerfect Data
497	File Extension HYD	Corel WordPerfect Hyphenation Dictionary
498	File Extension HYDRA	Hydra Image Filter Program Format
499	File Extension HYM	Hymarc Scandata Scanner 3D Image Binary
500	File Extension HYP	Dictionary Information Format
501	File Extension HYPE	Hype Document
502	File Extension HYQ	CARE-S InfoWorks Hydrograph
503	File Extension HYV	Team Manager Meet Event Format
504	File Extension HZ	Chinese (Hanzi) Text
505	File Extension HZD	SeisWorks
506	File Extension H_	Microsoft Winhelp Compressed
507	File Extension H__	C++ Header