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