System Files
by: Administrator
# File extension The full name of the file
 
1 2FS file extension Puppy Linux Save State File
2 32S file extension Win32s
3 386 file extension Windows Virtual Device Driver
4 3FS file extension Puppy Linux Save State File
5 500 file extension Linux
6 73U file extension TI-73 Explorer Operating System File
7 8XU file extension TI-83 Plus Operating System File
8 ADM file extension Administrative Template File
9 ADML file extension Microsoft administrative language-specific XML template file
10 ADMX file extension Group Policy Administrative Template File
11 AML file extension Microsoft Assistance Markup Language
12 ANI file extension Animated cursor
13 ANN file extension Help Annotations
14 AOS file extension ARCHOS PCtablet Firmware File
15 ASEC file extension Android Secure Application File
16 ATAHD file extension ATA Hard Drive Flag File
17 AUG file extension Red Hat Linux Shellvars
18 AUTOMATICDESTINATIONS-MS file extension Windows Jump List File
19 BASHRC file extension Bash Non-Interactive Login Shell File
20 BASH_HISTORY file extension Bash History File
21 BASH_PROFILE file extension Bash Interactive Login Shell File
22 BCD file extension Windows Boot Configuration Data File
23 BK2 file extension Windows Indexing Service Data File
24 BLF file extension Microsoft Windows Vista and Windows 7 registry file
25 BOM file extension Mac OS X Bill of Materials File
26 BUD file extension Binary Printer Description File
27 C32 file extension Syslinux COM32 Module
28 CAB file extension Windows Cabinet File
29 CAT file extension Microsoft Security Catalog file
30 CDMP file extension WCS Device Model Profile
31 CGZ file extension Linux Drivers Archive
32 CHS file extension Windows Chinese Noise-Word List File
33 CNS file extension Windows 2000 Client Connection Manager Export file
34 CNT file extension Help Contents File
35 CONFIGPROFILE file extension Apple Configuration Profile
36 CPL file extension Windows Control Panel Item
37 CPQ file extension Compaq OEM Disc Configuration File
38 CRASH file extension Mac OS X Crash Log File
39 CUR file extension Windows Cursor
40 DESKLINK file extension Desktop Shortcut
41 DESKTHEMEPACK file extension Windows 8 Desktop Theme Pack File
42 DEV file extension Windows Device Driver File
43 DFU file extension iOS DFU File
44 DIAGCAB file extension Troubleshooting Pack Cabinet File
45 DIAGCFG file extension Troubleshooting Pack Configuration File
46 DIAGPKG file extension Troubleshooting Pack File
47 DIMAX file extension DiMAX Firmware Image File
48 DIT file extension Active Directory Information Tree File
49 DLL file extension Dynamic Link Library
50 DMP file extension Windows Memory Dump
51 DO7 file extension DOS 7
52 DOH file extension Geoworks GEOS Dependency Information
53 DRPM file extension Delta RPM File
54 DRV file extension Device Driver
55 DYC file extension Xerox Printer Driver Configuration File
56 EBD file extension Windows EBD System File
57 EDJ file extension Enlightenment Theme File
58 EFI file extension Extensible Firmware Interface File
59 EFIRES file extension EFI Image File
60 EMERALD file extension Emerald Theme
61 ETL file extension Microsoft Event Trace Log File
62 EVT file extension Windows Event Viewer Log File
63 EVTX file extension Windows 7 Event Log File
64 FFA file extension Find Fast Status File
65 FFL file extension Find Fast Document List
66 FFO file extension Find Fast Document Properties Cache
67 FOTA file extension Firmware Over-the-Air File
68 FPBF file extension Mac OS X Burn Folder
69 FTG file extension Full Text Group
70 GMMP file extension WCS Gamut Map Model Profile
71 GRL file extension Windows Update Status File
72 GROUP file extension Windows Contacts Group File
73 H1K file extension Keyword Index - Microsoft Windows Assistance Platform Client Help Related
74 H1S file extension Windows Assistance Platform Help File
75 HDMP file extension Windows Heap Dump
76 HELP file extension Mac OS X Help Book
77 HHC file extension HTML Help Table of Contents
78 HHK file extension HTML Help Index
79 HIV file extension Windows Registry Hive File
80 HLP file extension Windows Help File
81 HPC file extension System Dynamic Library
82 HPJ file extension Help Project File
83 HSH file extension Windows Catalog Search Index File
84 HTT file extension Hypertext Template File
85 ICL file extension Windows Icon Library File
86 ICNS file extension Mac OS X Icon Resource File
87 ICO file extension Icon File
88 ICONPACKAGE file extension IconPackager Theme File
89 IFW file extension INTUS Firmware File
90 IME file extension Windows Input Method Editor File
91 IMG3 file extension iPhone IMG3 File
92 INF_LOC file extension Windows Driver Information Cache File
93 INTERNETCONNECT file extension Apple Internet Connect Document
94 ION file extension File Description File
95 IOPLIST file extension Mac OS X IOPLIST File
96 IPOD file extension Rockbox Firmware File
97 IPTHEME file extension IconPackager Raw Theme File
98 ITEMDATA-MS file extension Windows 8 Start Screen Item Data File
99 IUS file extension InfoTMIC Firmware Update File
100 JOB file extension Windows Task Scheduler Job File
101 JOURNAL_INFO_BLOCK file extension Apple Mac OS Xsystem
102 JPN file extension Windows Japanese Noise-Word List File
103 K48 file extension Apple IOS Kernel Cache
104 KBD file extension Keyboard Layout Script
105 KEXT file extension Mac OS X Kernel Extension
106 KO file extension Linux Kernel Module File
107 KOR file extension Windows Korean Noise-Words List File
108 LFS file extension Samsung Phone params.lfs File
109 LIBRARY-MS file extension Windows Library Description File
110 LNK file extension Windows File Shortcut
111 LOCKFILE file extension Mac OS X PLIST Lock File
112 LOG1 file extension Windows Registry Hive Log File
113 LOG2 file extension Windows Registry Hive Log 2 File
114 LPD file extension Lookout Protocol Driver File
115 MANIFEST file extension Windows Application Manifest File
116 MAPIMAIL file extension Send To Mail Recipient
117 MDMP file extension Windows Minidump
118 METADATA_NEVER_INDEX file extension Spotlight Never Index File
119 MI4 file extension Audio Player Firmware File
120 MLC file extension Microsoft Language Interface Pack
121 MOBILECONFIG file extension Apple Mobile Configuration File
122 MONITORPANEL file extension Apple Mac OS X Display Panel Extension
123 MSC file extension Microsoft Management Console Snap-in Control File
124 MSP file extension Windows Installer Patch
125 MSSTYLE file extension Windows XP Unsigned Style
126 MSSTYLES file extension Windows XP Style
127 MTZ file extension MIUI Theme
128 MUI file extension Multilingual User Interface File
129 MUIMANIFEST file extension Microsoft Windows Multilingual User Interface
130 MUI_CCCD5AE0 file extension Hid User Library
131 MUM file extension Windows Vista Update Package
132 MYDOCS file extension Send To My Documents
133 N81 file extension Apple IOS Kernel Cache
134 N90 file extension Apple IOS Kernel Cache
135 NBH file extension ROM Update Utility Image File
136 NETWORKCONNECT file extension Apple Network Connect Document
137 NLS file extension Microsoft National Language Support File
138 NT file extension Windows NT Startup File
139 NTFS file extension NTFS Partition File
140 OSAX file extension FindFile OSAX mac file type
141 OV3 file extension Overlay
142 PANIC file extension Kernel Panic File
143 PDR file extension Windows Port Driver
144 PF file extension Windows prefetch file
145 PFX file extension PKCS #12 Certificate File
146 PK2 file extension Silkroad Online Game Data File
147 PNF file extension Precompiled INF File
148 PPD file extension PostScript Printer Description File
149 PREFPANE file extension Mac OS X System Preference Pane
150 PRINTEREXPORT file extension Windows Printer Migration File
151 PROFILE file extension Bash Shell Profile
152 PROVISIONPROFILE file extension Apple Provision Profile
153 PWL file extension Windows Password List
154 QKY file extension Quirky Kernel
155 QUICKTIMECOMPONENTS file extension Mac OS X System
156 RC1 file extension Samsung Mobile Device Firmware File
157 RCO file extension PlayStation Portable Resource File
158 REG file extension Registry File
159 REGTRANS-MS file extension Registry Transaction Log File
160 RFW file extension Rockchip Firmware File
161 RISCOS file extension Acorn RISC OS
162 RMT file extension Router Firmware File
163 RRA file extension Windows Installer temporary file file
164 RSQ file extension IBM 4690 Operating System​
165 RTP file extension Microsoft software update file
166 RWM file extension Windows Imaging Resource Only
167 SAVEDSEARCH file extension Spotlight Saved Search
168 SAVER file extension Mac OS X Screen Saver
169 SBF file extension Android System File
170 SCAP file extension EFI Firmware File
171 SCF file extension Windows Explorer Command
172 SCHEMAS file extension GConf Schema Definition File
173 SCR file extension Windows Screensaver
174 SEARCHCONNECTOR-MS file extension Windows Search Connector File
175 SFCACHE file extension ReadyBoost Cache File
176 SHD file extension Windows Print Job Shadow File
177 SHSH file extension iPhone/iPod Touch SHSH Blob File
178 SO0 file extension Unix Shared Library File
179 SP3 file extension Microsoft Windows XP with Service Pack 3 installation file
180 SPL file extension Windows Print Spool File
181 SPREPORTER file extension Mac OS X System Profiler Reporter
182 SQM file extension Service Quality Monitoring File
183 SYS file extension Windows System File
184 TDZ file extension Drobo Firmware File
185 THA file extension Windows Thai Noise-Words List File
186 THEME file extension Microsoft Plus! Desktop Theme
187 TNR file extension GPS Pathfinder ProXR/XRS Firmware
188 TRX_DLL file extension Windows Startup File
189 UAQ file extension Microsoft Windows Action Queue
190 UCE file extension Windows UCE System File
191 VCN file extension NCDrive Vacon NX System Software
192 VGA file extension VGA Display Driver
193 VGD file extension Generic CADD VGA Driver
194 VXD file extension Virtual Device Driver
195 VX_ file extension Compressed Virtual Device Driver File
196 WDGT file extension Dashboard Widget
197 WEBPNP file extension Web Point and Print File
198 WER file extension Windows Error Report
199 WGZ file extension S60 Web Runtime Widget Package
200 WRS file extension Corel WordPerfect Windows Printer Driver
201 WSS file extension Microsoft Windows Sound System
202 XP file extension WindowBlinds temporary file
203 XRM-MS file extension Microsoft Security Certificate
204 ZEX file extension ZOOM MRS-802 System
205 ZONEIDENTIFIER file extension Windows Zone Identifier File
206 _DL file extension Dynamic Link Library DLL File Form