Home : Browse : System Files
System Files
The System Files category includes files related to Mac, Windows, and Linux operating systems. Some examples include system libraries, icons, themes, and device drivers. Files output by the system are also included in this category.
Common system file extensions include .DLL, .DRV, .SYS, and .CAB.
| File Extension | File Type | Popularity |
|---|---|---|
| .73U | TI-73 Explorer Operating System File | 143 |
| .EBD | Windows EBD System File | 155 |
| .HIV | Windows Registry Hive File | 156 |
| .ADMX | Group Policy Administrative Template File | 156 |
| .ICONPACKAGE | IconPackager Theme File | 160 |
| .REG | Registry File | 162 |
| .HTT | Hypertext Template File | 165 |
| .AML | ACPI Machine Language File | 167 |
| .PCK | System Center Configuration Manager Package File | 167 |
| .CUR | Windows Cursor | 167 |
| .REGTRANS-MS | Registry Transaction Log File | 168 |
| .FTF | FlashTool Firmware File | 170 |
| .ANI | Windows Animated Cursor | 172 |
| .DLL | Dynamic Link Library | 174 |
| .DESKTHEMEPACK | Windows 8 Desktop Theme Pack File | 174 |
| .LIBRARY-MS | Windows Library Description File | 175 |
| .DVD | DOS Device Driver | 176 |
| .BASH_HISTORY | Bash History File | 176 |
| .DESKLINK | Desktop Shortcut | 176 |
| .SEARCHCONNECTOR-MS | Windows Search Connector File | 177 |
| .LNK | Windows Shortcut | 177 |
| .WDGT | Dashboard Widget | 178 |
| .ION | File Description File | 179 |
| .SCR | Windows Screensaver | 179 |
| .CLB | COM+ Catalog File | 180 |
| .VGA | VGA Display Driver | 180 |
| .ICNS | macOS Icon Resource File | 180 |
| .DMP | Windows Memory Dump | 180 |
| .CPL | Windows Control Panel Item | 182 |
| .PK2 | Silkroad Online Game Data File | 182 |
| .NFO | System Information File | 183 |
| .MDMP | Windows Minidump | 184 |
| .THEME | Microsoft Plus! Desktop Theme | 185 |
| .NT | Windows NT Startup File | 186 |
| .QVM | Q Virtual Machine | 186 |
| .MAPIMAIL | Send To Mail Recipient | 187 |
| .INF_LOC | Windows Driver Information Cache File | 187 |
| .ICO | Icon File | 188 |
| .SYS | Windows System File | 188 |
| .SFCACHE | ReadyBoost Cache File | 191 |
| .ASEC | Android Secure Application File | 192 |
| .RC1 | Samsung Mobile Device Firmware File | 192 |
| .PROP | Android Build Properties File | 192 |
| .MSC | Microsoft Management Console Snap-in Control File | 194 |
| .MANIFEST | Windows Application Manifest File | 194 |
| .CAB | Windows Cabinet File | 196 |
| .BIN | Router Firmware File | 198 |
| .DAT | Windows Registry Hive File | 199 |
| .FOTA | Firmware Over-the-Air File | 200 |
| .MI4 | Audio Player Firmware File | 200 |
| .RMT | Router Firmware File | 200 |
| .LOG1 | Windows Registry Hive Log File | 200 |
| .000 | Indexing Service Data File | 200 |
| .VX_ | Compressed Virtual Device Driver File | 200 |
| .TIMER | Systemd Unit Configuration File | 200 |
| .CGZ | Linux Drivers Archive | 200 |
| .PAT | DiskStation Manager Installation File | 200 |
| .ZONE.IDENTIFIER | Windows Zone Identifier File | 200 |
| .LOCKFILE | Mac OS X PLIST Lock File | 200 |
| .PWL | Windows Password List | 200 |
| .SERVICE | Systemd Service Unit File | 200 |
| .DRPM | Delta RPM File | 200 |
| .CANNEDSEARCH | Apple Predefined Search | 200 |
| .FFX | Microsoft Find Fast Index | 200 |
| .PREFPANE | Mac OS X System Preference Pane | 200 |
| .CI | Windows Content Indexer Catalog File | 200 |
| .EDJ | Enlightenment Theme File | 200 |
| .H1S | Windows Assistance Platform Help File | 200 |
| .MUI | Multilingual User Interface File | 200 |
| .ETL | Microsoft Event Trace Log File | 203 |
| .SYS | Motorola Driver File | 204 |
| .PROFILE | Bash Shell Profile | 208 |
| .ELF | Executable and Linkable Format File | 208 |
| .BCD | Windows Boot Configuration Data File | 208 |
| .BASH_PROFILE | Bash Interactive Login Shell File | 209 |
| .WDF | Windows Driver Foundation File | 210 |
| .MTZ | MIUI Theme | 211 |
| .MLC | Microsoft Language Interface Pack | 211 |
| .MOBILECONFIG | Apple Mobile Configuration File | 212 |
| .BIO | BIOS File | 212 |
| .MSSTYLES | Windows XP Style | 213 |
| .CM0013 | Samsung Smart TV Index File | 214 |
| .SDB | Custom Application Compatibility Database | 214 |
| .LFS | Samsung Phone params.lfs File | 217 |
| .BOM | Mac OS X Bill of Materials File | 217 |
| .PIT | Samsung Phone Firmware File | 217 |
| .SDT | Siemens Desktop Theme File | 217 |
| .C32 | Syslinux COM32 Module | 218 |
| .0 | Shared Library Link File | 218 |
| .PNF | Precompiled INF File | 219 |
| .MSP | Windows Installer Patch | 219 |
| .DIMAX | DiMAX Firmware Image File | 220 |
| .HHK | HTML Help Index | 220 |
| .MBR | Master Boot Record File | 220 |
| .WEBPNP | Web Point and Print File | 220 |
| .GROUP | Windows Contacts Group File | 220 |
| .208 | ASUS Notebook BIOS 208 Update File | 221 |
| .ADM | Administrative Template File | 222 |
| .EFI | Extensible Firmware Interface File | 222 |
| .DIAGCAB | Troubleshooting Pack Cabinet File | 223 |
| .INS | Internet Naming Service File | 224 |
| .FIRM | Boot9Strap 3DS Firmware File | 225 |
| .3FS | Puppy Linux Save State File | 225 |
| .DRV | Device Driver | 226 |
| .POL | Windows Policy File | 226 |
| .CRASH | Mac OS X Crash Log File | 228 |
| .CAT | Windows Catalog File | 230 |
| .FX | ReadyBoot Trace File | 230 |
| .LOG2 | Windows Registry Hive Log 2 File | 231 |
| .DTHUMB | Android Data Thumbnail | 232 |
| .CMO | ASUS BIOS File | 233 |
| .IMG3 | iPhone IMG3 File | 233 |
| .SAVEDSEARCH | Spotlight Saved Search | 233 |
| .IOPLIST | Mac OS X IOPLIST File | 233 |
| .SWP | Swap File | 233 |
| .IME | Windows Input Method Editor File | 233 |
| .PPD | PostScript Printer Description File | 235 |
| .BASHRC | Bash Non-Interactive Login Shell File | 237 |
| .VXD | Virtual Device Driver | 238 |
| .JOB | Windows Task Scheduler Job File | 238 |
| .HCD | Samsung Android Firmware File | 238 |
| .CNT | Help Contents File | 239 |
| .SBF | Android System File | 240 |
| .DIT | Active Directory Information Tree File | 240 |
| .WPX | Printer Description File | 240 |
| .KEY | Security Key | 241 |
| .LST | GRUB Boot List File | 244 |
| .SHD | Windows Print Job Shadow File | 244 |
| .8XU | TI-83 and TI-84 Plus Operating System File | 244 |
| .PRF | Windows System File | 244 |
| .AOS | ARCHOS PCtablet Firmware File | 244 |
| .ADML | Group Policy Language-Specific Administrative Template | 247 |
| .MBN | Multi Boot Image | 248 |
| .386 | Windows Virtual Device Driver | 248 |
| .CPQ | Compaq OEM Disc Configuration File | 250 |
| .MOD | GRUB Module | 250 |
| .NB0 | Device Boot Loader Image | 250 |
| .SCHEMAS | GConf Schema Definition File | 250 |
| .CHG | Windows Net Logon File | 250 |
| .FFO | Find Fast Document Properties Cache | 250 |
| .GRP | Windows Program Manager Group | 250 |
| .TDZ | Drobo Firmware File | 250 |
| .SBN | Cisco IP Phone Firmware File | 250 |
| .SQM | Service Quality Monitoring File | 250 |
| .ITEMDATA-MS | Windows 8 Start Screen Item Data File | 250 |
| .SHSH | iPhone/iPod Touch SHSH Blob File | 250 |
| .HLP | Windows Help File | 252 |
| .ODEX | Optimized Dalvik Executable | 252 |
| .HDMP | Windows Heap Dump | 256 |
| .IDX | Index File | 257 |
| .METADATA_NEVER_INDEX | Spotlight Never Index File | 257 |
| .PS2 | Microsoft Search Catalog Index File | 258 |
| .FLG | Puppy Linux Partition Flag File | 258 |
| .WER | Windows Error Report | 261 |
| .DFU | iOS DFU File | 264 |
| .BLF | CLFS Base Log File | 264 |
| .2FS | Puppy Linux Save State File | 264 |
| .PFX | PKCS #12 Certificate File | 265 |
| .DEV | Windows Device Driver File | 267 |
| .FPBF | Mac OS X Burn Folder | 267 |
| .THA | Windows Thai Noise-Words List File | 267 |
| .8CU | TI-84 Plus C Operating System File | 267 |
| .CPI | Codepage Information File | 267 |
| .CHK | Netgear Router Firmware File | 267 |
| .PRINTEREXPORT | Windows Printer Migration File | 267 |
| .KO | Linux Kernel Module File | 267 |
| .PRO | TurboIntegrator Process Definition File | 267 |
| .PDR | Windows Port Driver | 267 |
| .ICL | Windows Icon Library File | 267 |
| .CHT | Windows Chinese Traditional Noise-Word List File | 271 |
| .ADV | Audio Driver File | 271 |
| .HHC | HTML Help Table of Contents | 273 |
| .TRX_DLL | Windows Startup File | 275 |
| .MSSTYLE | Windows XP Unsigned Style | 275 |
| .NBH | ROM Update Utility Image File | 275 |
| .ATAHD | ATA Hard Drive Flag File | 275 |
| .PRT | Printer Driver File | 278 |
| .MUI_CCCD5AE0 | Hid User Library | 280 |
| .KS | Kickstart File | 280 |
| .IM4P | IMG4 Payload File | 280 |
| .RUF | Samsung DVD and Blu-ray Player Firmware File | 281 |
| .SAVER | Mac OS X Screen Saver | 283 |
| .STR | Windows Screensaver File | 285 |
| .KEXT | Mac OS X Kernel Extension | 286 |
| .XRM-MS | Microsoft Security Certificate | 286 |
| .THUMBNAILS | Android Thumbnails Folder | 287 |
| .SPL | Windows Print Spool File | 287 |
| .CUSTOMDESTINATIONS-MS | Windows 7 Jump List File | 287 |
| .MUM | Windows Vista Update Package | 289 |
| .BK2 | Windows Indexing Service Data File | 295 |
| .CAP | ASUS BIOS Update File | 295 |
| .XFB | Xserve RAID Firmware Binary File | 300 |
| .CHS | Windows Chinese Noise-Word List File | 300 |
| .UCE | Windows UCE System File | 300 |
| .HSH | Windows Catalog Search Index File | 300 |
| .PID | Creative Driver File | 300 |
| .DLX | Renamed DLL File | 300 |
| .FID | Microsoft Catalog Indexing Service File | 300 |
| .IDI | EVA Controller Event Log | 300 |
| .TA | Sony Firmware File | 300 |
| .CM0012 | Configuration Management File | 300 |
| .KDZ | LG Mobile Device Firmware | 300 |
| .ESCOPY | ES File Explorer File Manager Temporary File | 300 |
| .PROVISIONPROFILE | Apple Provision Profile | 300 |
| .CONFIGPROFILE | Apple Configuration Profile | 300 |
| .MEM | Parallels Desktop Memory Dump File | 300 |
| .HPJ | Help Project File | 300 |
| .EFIRES | EFI Image File | 300 |
| .IFW | INTUS Firmware File | 300 |
| .LPD | LPD Daemon Print Permissions File | 300 |
| .RFW | Rockchip Firmware File | 300 |
| .GMMP | WCS Gamut Map Model Profile | 300 |
| .PS1 | Microsoft Indexing Service Data File | 309 |
| .CPR | Windows Phone Display Settings File | 309 |
| .SO.0 | Unix Shared Library File | 314 |
| .GRL | Windows Update Status File | 314 |
| .SCF | Windows Explorer Command | 315 |
| .BMK | Help Bookmarks | 320 |
| .FL1 | Lenovo BIOS Update File | 320 |
| .AUTOMATICDESTINATIONS-MS | Windows Jump List File | 322 |
| .KBD | Keyboard Layout Script | 325 |
| .DEVICEMETADATA-MS | Device Metadata Package | 325 |
| .DYC | Xerox Printer Driver Configuration File | 325 |
| .ME | Puppy Linux Partition Flag File | 329 |
| .EVTX | Windows 7 Event Log File | 331 |
| .FFA | Find Fast Status File | 333 |
| .QKY | Quirky Kernel | 333 |
| .PPM | Post Programmable Memory File | 333 |
| .NLS | Microsoft National Language Support File | 333 |
| .NTFS | NTFS Partition File | 340 |
| .DSS | DCC Active Designer File | 340 |
| .SB | Slax Bundle | 342 |
| .FTS | Full Text Search | 343 |
| .VGD | Generic CADD VGA Driver | 343 |
| .LPD | Lookout Protocol Driver File | 350 |
| .RCO | PlayStation Portable Resource File | 350 |
| .IPTHEME | IconPackager Raw Theme File | 350 |
| .WPH | Phoenix BIOS File | 350 |
| .IPOD | Rockbox Firmware File | 350 |
| .TRASHES | macOS USB Flash Drive Trash Folder | 350 |
| .MYDOCS | Send To My Documents | 350 |
| .SCAP | EFI Firmware File | 350 |
| .JPN | Windows Japanese Noise-Word List File | 350 |
| .RS | Windows Rating System File | 357 |
| .BUD | Binary Printer Description File | 360 |
| .WGZ | S60 Web Runtime Widget Package | 367 |
| .SPX | System Profiler XML Report | 375 |
| .BK1 | Windows Indexing Service File | 380 |
| .EVT | Windows Event Viewer Log File | 400 |
| .NETWORKCONNECT | Apple Network Connect Document | 400 |
| .KOR | Windows Korean Noise-Words List File | 400 |
| .RCV | BIOS Recovery File | 400 |
| .DIAGCFG | Troubleshooting Pack Configuration File | 400 |
| .FTG | Full Text Group | 400 |
| .PLASMOID | Plasma Widget | 400 |
| .HVE | Windows Registry Hive File | 400 |
| .FFL | Find Fast Document List | 400 |
| .REGLNK | Registry Editor Shortcut File | 400 |
| .SIN | Sony Xperia Firmware File | 400 |
| .EMERALD | Emerald Theme | 400 |
| .PANIC | Kernel Panic File | 400 |
| .MMV | Magnex Firmware File | 400 |
| .IUS | InfoTMIC Firmware Update File | 400 |
| .CDMP | WCS Device Model Profile | 400 |
| .ANN | Help Annotations | 420 |
| .HELP | Mac OS X Help Book | 444 |
| .RC2 | Samsung Mobile Device Firmware File | 450 |
| .DIAGPKG | Troubleshooting Pack File | 450 |
| .INTERNETCONNECT | Apple Internet Connect Document | 450 |
| .RVP | Sharp Blu-ray Player Firmware File | 500 |
| .ITS | Internet Document Set | 500 |
All Categories
Common File Types
Text Files
Data Files
Audio Files
Video Files
eBook Files
3D Images
Raster Images
Vector Images
Camera Raw Images
Page Layout Files
Spreadsheet Files
Database Files
Executable Files
Game Files
CAD Files
GIS Files
Web Files
Plugin Files
Font Files
System Files
Settings Files
Encoded Files
Compressed Files
Disk Images
Developer Files
Backup Files
Misc Files