System Files

#File extensionThe full name of the file
 
1 $03 File Extension MS-DOS Pipe
2 286 File Extension Microsoft Windows Virtual Device Driver
3 2FS File Extension Puppy Linux Save State Format
4 2GR File Extension Windows VGA Graphic Drivers
5 32S File Extension Win32s
6 386 File Extension Windows Virtual Device Driver
7 3FS File Extension Puppy Linux Save State Format
8 3~6 File Extension Windows 3.xx System
9 500 File Extension Linux
10 73U File Extension TI-73 Explorer Operating System Format
11 8XU File Extension TI-83 Plus Operating System Format
12 AAD File Extension FreeBSD
13 ACCESS File Extension Java Access Control
14 ACCT File Extension IBM AIX System
15 ADM File Extension Administrative Template Format
16 ADML File Extension Microsoft Administrative Language-specific XML Template Format
17 ADMX File Extension Group Policy Administrative Template Format
18 AIX File Extension IBM AIX
19 AML File Extension Microsoft Assistance Markup Language
20 ANI File Extension Animated Cursor
21 ANN File Extension Help Annotations
22 AOS File Extension ARCHOS PCtablet Firmware Format
23 APDISK File Extension Apple Mac OS X Related
24 APPLEDOUBLE File Extension Apple AppleDouble Resource
25 APPLE_PARTITION_MAP File Extension Apple Partition Scheme
26 AQL File Extension AOL DLL
27 ASEC File Extension Android Secure Application Format
28 ATAHD File Extension ATA Hard Drive Flag Format
29 AUG File Extension Red Hat Linux Shellvars
30 AUTOMATICDESTINATIONS-MS File Extension Windows Jump List Format
31 BASHRC File Extension Bash Non-Interactive Login Shell Format
32 BASH_HISTORY File Extension Bash History Format
33 BASH_PROFILE File Extension Bash Interactive Login Shell Format
34 BBFW File Extension ITunes Firmware
35 BCD File Extension Windows Boot Configuration Data Format
36 BK2 File Extension Windows Indexing Service Data Format
37 BLF File Extension Microsoft Windows Vista And Windows 7 Registry Format
38 BNR File Extension Nintento Wii Homebrew
39 BOM File Extension Mac OS X Bill Of Materials Format
40 BOOTEFISIGNATURE File Extension Bootefisignature Mac OS X System
41 BRIDGESUPPORT File Extension Bridgesupport Mac OS X Format Extension
42 BSDIFF File Extension Cygwin
43 BUD File Extension Binary Printer Description Format
44 C32 File Extension Syslinux COM32 Module
45 CAB File Extension Windows Cabinet Format
46 CAT File Extension Microsoft Security Catalog Format
47 CB File Extension Microsoft Clean Boot
48 CDMP File Extension WCS Device Model Profile
49 CGK File Extension BlueSoleil
50 CGZ File Extension Linux Drivers Archive
51 CHS File Extension Windows Chinese Noise-Word List Format
52 CNS File Extension Windows 2000 Client Connection Manager Export Format
53 CNT File Extension Help Contents Format
54 COMPONENTS File Extension Mac OS X System
55 CONFIGPROFILE File Extension Apple Configuration Profile
56 CPL File Extension Windows Control Panel Item
57 CPQ File Extension Compaq OEM Disc Configuration Format
58 CRASH File Extension Mac OS X Crash Log Format
59 CRMLOG File Extension Microsoft Windows CRM Log
60 CTFSYS File Extension OS X Mach Kernel System
61 CUR File Extension Windows Cursor
62 DAT_TUREG_OLD File Extension Windows Registry
63 DDZ File Extension Adaptec Unix Driver
64 DESKLINK File Extension Desktop Shortcut
65 DESKTHEMEPACK File Extension Windows 8 Desktop Theme Pack Format
66 DEV File Extension Windows Device Driver Format
67 DEVICEMANIFEST-MS File Extension Microsoft Windows Device Metadata
68 DFU File Extension IOS DFU Format
69 DIAGCAB File Extension Troubleshooting Pack Cabinet Format
70 DIAGCFG File Extension Troubleshooting Pack Configuration Format
71 DIAGPKG File Extension Troubleshooting Pack Format
72 DIMAX File Extension DiMAX Firmware Image Format
73 DIT File Extension Active Directory Information Tree Format
74 DLL File Extension Dynamic Link Library
75 DMP File Extension Windows Memory Dump
76 DO7 File Extension DOS 7
77 DOH File Extension Geoworks GEOS Dependency Information
78 DOS File Extension WIN95/ DOS 7 System
79 DRPM File Extension Delta RPM Format
80 DRV File Extension Device Driver
81 DYC File Extension Xerox Printer Driver Configuration Format
82 EBD File Extension Windows EBD System Format
83 EDJ File Extension Enlightenment Theme Format
84 EFI File Extension Extensible Firmware Interface Format
85 EFIRES File Extension EFI Image Format
86 EMERALD File Extension Emerald Theme
87 EQUIV File Extension IBM AIX System Format.
88 ESN File Extension Windows XP System32
89 ETL File Extension Microsoft Event Trace Log Format
90 EVT File Extension Windows Event Viewer Log Format
91 EVTX File Extension Windows 7 Event Log Format
92 EXT2 File Extension Linux Second Extended System
93 FFA File Extension Find Fast Status Format
94 FFL File Extension Find Fast Document List
95 FFO File Extension Find Fast Document Properties Cache
96 FOLDER File Extension Microsoft Windows Explorer Folder
97 FOTA File Extension Firmware Over-the-Air Format
98 FPBF File Extension Mac OS X Burn Folder
99 FSEVENTSD File Extension MAC OS X
100 FSTAB File Extension File System Table
101 FTG File Extension Full Text Group
102 FWL File Extension FileWrangler EXE Library
103 GMMP File Extension WCS Gamut Map Model Profile
104 GRL File Extension Windows Update Status Format
105 GROUP File Extension Windows Contacts Group Format
106 H1C File Extension Windows Vista Format Related To Assistance Platform (AP) Help
107 H1F File Extension Microsoft Windows Assistance Platform Client Help
108 H1K File Extension Keyword Index - Microsoft Windows Assistance Platform Client Help Related
109 H1S File Extension Windows Assistance Platform Help Format
110 H1T File Extension Microsoft Windows Assistance Platform Client Help Related
111 H1V File Extension Task Metadata - Microsoft Windows Assistance Platform Client Help Related
112 HDMP File Extension Windows Heap Dump
113 HELP File Extension Mac OS X Help Book
114 HHC File Extension HTML Help Table Of Contents
115 HHK File Extension HTML Help Index
116 HIV File Extension Windows Registry Hive Format
117 HLP File Extension Windows Help Format
118 HPC File Extension System Dynamic Library
119 HPFS File Extension OS/2 High Performance Format System
120 HPJ File Extension Help Project Format
121 HSH File Extension Windows Catalog Search Index Format
122 HTT File Extension Hypertext Template Format
123 HTW File Extension Windows
124 HV File Extension Microsoft Windows Mobile Hive
125 HXI File Extension Microsoft Help Compiled Storage
126 IA64 File Extension HP-UX
127 ICL File Extension Windows Icon Library Format
128 ICNS File Extension Mac OS X Icon Resource Format
129 ICO File Extension Icon Format
130 ICONPACKAGE File Extension IconPackager Theme Format
131 IDENTIFIER File Extension Microsoft Windows Zone Identifier
132 IDX_DLL File Extension Microsoft Office IDX_DLL
133 IFW File Extension INTUS Firmware Format
134 IME File Extension Windows Input Method Editor Format
135 IMG3 File Extension IPhone IMG3 Format
136 INA File Extension MS-DOS
137 INF_LOC File Extension Windows Driver Information Cache Format
138 INSTALL_BACKUP File Extension AVG Shell Extension Module
139 INTERNETCONNECT File Extension Apple Internet Connect Document
140 ION File Extension File Description Format
141 IOPLIST File Extension Mac OS X IOPLIST Format
142 IPOD File Extension Rockbox Firmware Format
143 IPTHEME File Extension IconPackager Raw Theme Format
144 IRIX6 File Extension Irix 6
145 ISWP File Extension Apple ITunes IOS Firmware Update
146 ITEMDATA-MS File Extension Windows 8 Start Screen Item Data Format
147 IUS File Extension InfoTMIC Firmware Update Format
148 JFS File Extension Linux/Unix Journaling System
149 JLB File Extension PAC Mate BX Keyboard Driver
150 JOB File Extension Windows Task Scheduler Job Format
151 JOURNAL_INFO_BLOCK File Extension Apple Mac OS Xsystem
152 JPN File Extension Windows Japanese Noise-Word List Format
153 K48 File Extension Apple IOS Kernel Cache
154 KBD File Extension Keyboard Layout Script
155 KEXT File Extension Mac OS X Kernel Extension
156 KO File Extension Linux Kernel Module Format
157 KOR File Extension Windows Korean Noise-Words List Format
158 LE File Extension Le Mac OS X
159 LFS File Extension Samsung Phone Params.lfs Format
160 LGS File Extension Microsoft Windows Application Log
161 LIBRARY-MS File Extension Windows Library Description Format
162 LLS File Extension Windows System
163 LN File Extension UNIX Lint
164 LNK File Extension Windows Format Shortcut
165 LOCALIZED File Extension MAC OS X
166 LOCKFILE File Extension Mac OS X PLIST Lock Format
167 LOG1 File Extension Windows Registry Hive Log Format
168 LOG2 File Extension Windows Registry Hive Log 2 Format
169 LPD File Extension Lookout Protocol Driver Format
170 LS_ File Extension Unix Ls Directory
171 MANIFEST File Extension Windows Application Manifest Format
172 MAPIMAIL File Extension Send To Mail Recipient
173 MDIMPORTER File Extension Spotlight Importer Setting
174 MDMP File Extension Windows Minidump
175 METADATA_NEVER_INDEX File Extension Spotlight Never Index Format
176 MI4 File Extension Audio Player Firmware Format
177 MKEXT File Extension Mac OS X Mach Kernel Extension Memory Cache
178 MLC File Extension Microsoft Language Interface Pack
179 MOBILECONFIG File Extension Apple Mobile Configuration Format
180 MOJITO File Extension Limewire Kademlia
181 MONITORPANEL File Extension Apple Mac OS X Display Panel Extension
182 MPS_ File Extension MPW Shell
183 MSC File Extension Microsoft Management Console Snap-in Control Format
184 MSDM File Extension Microsoft Windows
185 MSP File Extension Windows Installer Patch
186 MSSTYLE File Extension Windows XP Unsigned Style
187 MSSTYLES File Extension Windows XP Style
188 MTZ File Extension MIUI Theme
189 MUI File Extension Multilingual User Interface Format
190 MUIMANIFEST File Extension Microsoft Windows Multilingual User Interface
191 MUI_CCCD5AE0 File Extension Hid User Library
192 MUM File Extension Windows Vista Update Package
193 MYDOCS File Extension Send To My Documents
194 N81 File Extension Apple IOS Kernel Cache
195 N90 File Extension Apple IOS Kernel Cache
196 N90AP File Extension IPhone Jailbreak Firmware
197 NBH File Extension ROM Update Utility Image Format
198 NETWORKCONNECT File Extension Apple Network Connect Document
199 NLS File Extension Microsoft National Language Support Format
200 NOS File Extension JDOS System
201 NOT_TERMINATED File Extension Mac OS X Audit Log
202 NOVS File Extension Novell NetWare Control Center
203 NT File Extension Windows NT Startup Format
204 NTFS File Extension NTFS Partition Format
205 NU4 File Extension Norton Utilities DLL Root
206 OS2 File Extension Os2 System
207 OSAX File Extension FindFile OSAX Mac Format Type
208 OV1 File Extension Overlay
209 OV3 File Extension Overlay
210 OV4 File Extension Overlay
211 OV5 File Extension Overlay
212 P5X File Extension Windows System
213 PANIC File Extension Kernel Panic Format
214 PAYLOAD File Extension Microsoft Windows Mobile
215 PCI File Extension PCI Miniport
216 PDR File Extension Windows Port Driver
217 PF File Extension Windows Prefetch Format
218 PFX File Extension PKCS #12 Certificate Format
219 PK2 File Extension Silkroad Online Game Data Format
220 PNF File Extension Precompiled INF Format
221 PPD File Extension PostScript Printer Description Format
222 PR2 File Extension DBase IV Printer Driver
223 PREFPANE File Extension Mac OS X System Preference Pane
224 PRINTEREXPORT File Extension Windows Printer Migration Format
225 PROFILE File Extension Bash Shell Profile
226 PROVISIONPROFILE File Extension Apple Provision Profile
227 PWL File Extension Windows Password List
228 PXE File Extension Linux, Unix Network Bootable
229 QFILTER File Extension Mac OS X ColorSync Filter
230 QKY File Extension Quirky Kernel
231 QTS File Extension QuickTime System
232 QUICKTIMECOMPONENTS File Extension Mac OS X System
233 RC1 File Extension Samsung Mobile Device Firmware Format
234 RCO File Extension PlayStation Portable Resource Format
235 RDZ File Extension Mandrake Linux Install
236 REG File Extension Registry Format
237 REGTRANS-MS File Extension Registry Transaction Log Format
238 RFW File Extension Rockchip Firmware Format
239 RGU File Extension Microsoft Windows Mobile Registry Entry
240 RIO File Extension IBM AIX System
241 RISCOS File Extension Acorn RISC OS
242 RMT File Extension Router Firmware Format
243 RRA File Extension Windows Installer Temporary Format Format
244 RSQ File Extension IBM 4690 Operating System​
245 RTP File Extension Microsoft Software Update Format
246 RWM File Extension Windows Imaging Resource Only
247 RX File Extension MS-DOS 7
248 SAVEDSEARCH File Extension Spotlight Saved Search
249 SAVER File Extension Mac OS X Screen Saver
250 SBF File Extension Android System Format
251 SCAP File Extension EFI Firmware Format
252 SCF File Extension Windows Explorer Command
253 SCHEMAS File Extension GConf Schema Definition Format
254 SCR File Extension Windows Screensaver
255 SEARCHCONNECTOR-MS File Extension Windows Search Connector Format
256 SEARCHINDEXCACHE File Extension Mac OS X Cache
257 SERVICE File Extension Mac OS X Service Application
258 SF0 File Extension Windows Sytem Check
259 SFCACHE File Extension ReadyBoost Cache Format
260 SHA File Extension Unix SHAR Archive
261 SHD File Extension Windows Print Job Shadow Format
262 SHSH File Extension IPhone/iPod Touch SHSH Blob Format
263 SO0 File Extension Unix Shared Library Format
264 SP3 File Extension Microsoft Windows XP With Service Pack 3 Installation Format
265 SPL File Extension Windows Print Spool Format
266 SPREPORTER File Extension Mac OS X System Profiler Reporter
267 SQM File Extension Service Quality Monitoring Format
268 SUPPORTED File Extension MAC OS X
269 SYS File Extension Windows System Format
270 TDZ File Extension Drobo Firmware Format
271 THA File Extension Windows Thai Noise-Words List Format
272 THEME File Extension Microsoft Plus! Desktop Theme
273 TNR File Extension GPS Pathfinder ProXR/XRS Firmware
274 TRX_DLL File Extension Windows Startup Format
275 UAQ File Extension Microsoft Windows Action Queue
276 UCE File Extension Windows UCE System Format
277 VCN File Extension NCDrive Vacon NX System Software
278 VET File Extension VET Antivirus System
279 VGA File Extension VGA Display Driver
280 VGD File Extension Generic CADD VGA Driver
281 VRS File Extension Corel WordPerfect Video Resource Device Driver
282 VTD File Extension Microsoft Windows Custom Virtual Device Driver
283 VXD File Extension Virtual Device Driver
284 VX_ File Extension Compressed Virtual Device Driver Format
285 WDGT File Extension Dashboard Widget
286 WEBPNP File Extension Web Point And Print Format
287 WER File Extension Windows Error Report
288 WGZ File Extension S60 Web Runtime Widget Package
289 WRS File Extension Corel WordPerfect Windows Printer Driver
290 WSS File Extension Microsoft Windows Sound System
291 XMO File Extension Adobe Authorware Movie Driver
292 XMS File Extension Microsoft EXtended Memory Specification
293 XP File Extension WindowBlinds Temporary Format
294 XRM-MS File Extension Microsoft Security Certificate
295 ZEX File Extension ZOOM MRS-802 System
296 ZONEIDENTIFIER File Extension Windows Zone Identifier Format
297 _DL File Extension Dynamic Link Library DLL Format Form
298 _VTI_BIN File Extension SharePoint
Top File Extensions
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File Extension of the day
thm icon

THM

Thumbnail Image Format

THM is a format created for purpose of storing small raster images (thumbnails), which depict equivalent, full-size images/graphics, but in a small...