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 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 File
28 ATAHD file extension ATA Hard Drive Flag File
29 AUG file extension Red Hat Linux Shellvars
30 AUTOMATICDESTINATIONS-MS file extension Windows Jump List File
31 BASHRC file extension Bash Non-Interactive Login Shell File
32 BASH_HISTORY file extension Bash History File
33 BASH_PROFILE file extension Bash Interactive Login Shell File
34 BBFW file extension ITunes Firmware
35 BCD file extension Windows Boot Configuration Data File
36 BK2 file extension Windows Indexing Service Data File
37 BLF file extension Microsoft Windows Vista and Windows 7 registry file
38 BNR file extension Nintento Wii Homebrew
39 BOM file extension Mac OS X Bill of Materials File
40 BOOTEFISIGNATURE file extension Bootefisignature Mac OS X System
41 BRIDGESUPPORT file extension Bridgesupport Mac OS X File Extension
42 BSDIFF file extension Cygwin
43 BUD file extension Binary Printer Description File
44 C32 file extension Syslinux COM32 Module
45 CAB file extension Windows Cabinet File
46 CAT file extension Microsoft Security Catalog file
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 File
52 CNS file extension Windows 2000 Client Connection Manager Export file
53 CNT file extension Help Contents File
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 File
58 CRASH file extension Mac OS X Crash Log File
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 File
66 DEV file extension Windows Device Driver File
67 DEVICEMANIFEST-MS file extension Microsoft Windows Device Metadata
68 DFU file extension iOS DFU File
69 DIAGCAB file extension Troubleshooting Pack Cabinet File
70 DIAGCFG file extension Troubleshooting Pack Configuration File
71 DIAGPKG file extension Troubleshooting Pack File
72 DIMAX file extension DiMAX Firmware Image File
73 DIT file extension Active Directory Information Tree File
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 File
80 DRV file extension Device Driver
81 DYC file extension Xerox Printer Driver Configuration File
82 EBD file extension Windows EBD System File
83 EDJ file extension Enlightenment Theme File
84 EFI file extension Extensible Firmware Interface File
85 EFIRES file extension EFI Image File
86 EMERALD file extension Emerald Theme
87 EQUIV file extension IBM AIX System File.
88 ESN file extension Windows XP System32
89 ETL file extension Microsoft Event Trace Log File
90 EVT file extension Windows Event Viewer Log File
91 EVTX file extension Windows 7 Event Log File
92 EXT2 file extension Linux Second Extended System
93 FFA file extension Find Fast Status File
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 File
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 File
105 GROUP file extension Windows Contacts Group File
106 H1C file extension Windows Vista File 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 File
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 File
117 HLP file extension Windows Help File
118 HPC file extension System Dynamic Library
119 HPFS file extension OS/2 High Performance File System
120 HPJ file extension Help Project File
121 HSH file extension Windows Catalog Search Index File
122 HTT file extension Hypertext Template File
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 File
128 ICNS file extension Mac OS X Icon Resource File
129 ICO file extension Icon File
130 ICONPACKAGE file extension IconPackager Theme File
131 IDENTIFIER file extension Microsoft Windows Zone Identifier
132 IDX_DLL file extension Microsoft Office IDX_DLL
133 IFW file extension INTUS Firmware File
134 IME file extension Windows Input Method Editor File
135 IMG3 file extension iPhone IMG3 File
136 INA file extension MS-DOS
137 INF_LOC file extension Windows Driver Information Cache File
138 INSTALL_BACKUP file extension AVG Shell Extension Module
139 INTERNETCONNECT file extension Apple Internet Connect Document
140 ION file extension File Description File
141 IOPLIST file extension Mac OS X IOPLIST File
142 IPOD file extension Rockbox Firmware File
143 IPTHEME file extension IconPackager Raw Theme File
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 File
147 IUS file extension InfoTMIC Firmware Update File
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 File
151 JOURNAL_INFO_BLOCK file extension Apple Mac OS Xsystem
152 JPN file extension Windows Japanese Noise-Word List File
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 File
157 KOR file extension Windows Korean Noise-Words List File
158 LE file extension Le Mac OS X
159 LFS file extension Samsung Phone params.lfs File
160 LGS file extension Microsoft Windows Application Log
161 LIBRARY-MS file extension Windows Library Description File
162 LLS file extension Windows System
163 LN file extension UNIX Lint
164 LNK file extension Windows File Shortcut
165 LOCALIZED file extension MAC OS X
166 LOCKFILE file extension Mac OS X PLIST Lock File
167 LOG1 file extension Windows Registry Hive Log File
168 LOG2 file extension Windows Registry Hive Log 2 File
169 LPD file extension Lookout Protocol Driver File
170 LS_ file extension Unix Ls Directory
171 MANIFEST file extension Windows Application Manifest File
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 File
176 MI4 file extension Audio Player Firmware File
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 File
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 File
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 File
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 File
198 NETWORKCONNECT file extension Apple Network Connect Document
199 NLS file extension Microsoft National Language Support File
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 File
204 NTFS file extension NTFS Partition File
205 NU4 file extension Norton Utilities DLL Root
206 OS2 file extension Os2 System
207 OSAX file extension FindFile OSAX mac file 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 File
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 file
218 PFX file extension PKCS #12 Certificate File
219 PK2 file extension Silkroad Online Game Data File
220 PNF file extension Precompiled INF File
221 PPD file extension PostScript Printer Description File
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 File
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 File
234 RCO file extension PlayStation Portable Resource File
235 RDZ file extension Mandrake Linux Install
236 REG file extension Registry File
237 REGTRANS-MS file extension Registry Transaction Log File
238 RFW file extension Rockchip Firmware File
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 File
243 RRA file extension Windows Installer temporary file file
244 RSQ file extension IBM 4690 Operating System​
245 RTP file extension Microsoft software update file
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 File
251 SCAP file extension EFI Firmware File
252 SCF file extension Windows Explorer Command
253 SCHEMAS file extension GConf Schema Definition File
254 SCR file extension Windows Screensaver
255 SEARCHCONNECTOR-MS file extension Windows Search Connector File
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 File
260 SHA file extension Unix SHAR Archive
261 SHD file extension Windows Print Job Shadow File
262 SHSH file extension iPhone/iPod Touch SHSH Blob File
263 SO0 file extension Unix Shared Library File
264 SP3 file extension Microsoft Windows XP with Service Pack 3 installation file
265 SPL file extension Windows Print Spool File
266 SPREPORTER file extension Mac OS X System Profiler Reporter
267 SQM file extension Service Quality Monitoring File
268 SUPPORTED file extension MAC OS X
269 SYS file extension Windows System File
270 TDZ file extension Drobo Firmware File
271 THA file extension Windows Thai Noise-Words List File
272 THEME file extension Microsoft Plus! Desktop Theme
273 TNR file extension GPS Pathfinder ProXR/XRS Firmware
274 TRX_DLL file extension Windows Startup File
275 UAQ file extension Microsoft Windows Action Queue
276 UCE file extension Windows UCE System File
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 File
285 WDGT file extension Dashboard Widget
286 WEBPNP file extension Web Point and Print File
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 file
294 XRM-MS file extension Microsoft Security Certificate
295 ZEX file extension ZOOM MRS-802 System
296 ZONEIDENTIFIER file extension Windows Zone Identifier File
297 _DL file extension Dynamic Link Library DLL File Form
298 _VTI_BIN file extension SharePoint