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 |
|---|---|---|
| .REG | Registry File | 159 |
| .PCK | System Center Configuration Manager Package File | 167 |
| .AML | ACPI Machine Language File | 167 |
| .CUR | Windows Cursor | 167 |
| .REGTRANS-MS | Registry Transaction Log File | 168 |
| .ADMX | Group Policy Administrative Template File | 168 |
| .FTF | FlashTool Firmware File | 170 |
| .SEARCHCONNECTOR-MS | Windows Search Connector File | 171 |
| .ANI | Windows Animated Cursor | 172 |
| .ICONPACKAGE | IconPackager Theme File | 173 |
| .DLL | Dynamic Link Library | 174 |
| .DESKTHEMEPACK | Windows 8 Desktop Theme Pack File | 175 |
| .EBD | Windows EBD System File | 177 |
| .LNK | Windows Shortcut | 177 |
| .DESKLINK | Desktop Shortcut | 178 |
| .WDGT | Dashboard Widget | 178 |
| .HTT | Hypertext Template File | 178 |
| .DVD | DOS Device Driver | 179 |
| .ICNS | macOS Icon Resource File | 179 |
| .VGA | VGA Display Driver | 180 |
| .CLB | COM+ Catalog File | 180 |
| .MAPIMAIL | Send To Mail Recipient | 180 |
| .VX_ | Compressed Virtual Device Driver File | 180 |
| .DMP | Windows Memory Dump | 180 |
| .CPL | Windows Control Panel Item | 181 |
| .PK2 | Silkroad Online Game Data File | 182 |
| .SCR | Windows Screensaver | 183 |
| .NFO | System Information File | 183 |
| .THEME | Microsoft Plus! Desktop Theme | 183 |
| .MDMP | Windows Minidump | 183 |
| .ION | File Description File | 184 |
| .NT | Windows NT Startup File | 186 |
| .QVM | Q Virtual Machine | 186 |
| .ICO | Icon File | 186 |
| .INF_LOC | Windows Driver Information Cache File | 187 |
| .SYS | Windows System File | 187 |
| .73U | TI-73 Explorer Operating System File | 187 |
| .LIBRARY-MS | Windows Library Description File | 189 |
| .HIV | Windows Registry Hive File | 190 |
| .ASEC | Android Secure Application File | 191 |
| .RC1 | Samsung Mobile Device Firmware File | 192 |
| .SFCACHE | ReadyBoost Cache File | 192 |
| .MSC | Microsoft Management Console Snap-in Control File | 194 |
| .MANIFEST | Windows Application Manifest File | 194 |
| .PROP | Android Build Properties File | 194 |
| .BIN | Router Firmware File | 196 |
| .PAT | DiskStation Manager Installation File | 196 |
| .CAB | Windows Cabinet File | 198 |
| .CANNEDSEARCH | Apple Predefined Search | 200 |
| .FFX | Microsoft Find Fast Index | 200 |
| .TIMER | Systemd Unit Configuration File | 200 |
| .FOTA | Firmware Over-the-Air File | 200 |
| .ZONE.IDENTIFIER | Windows Zone Identifier File | 200 |
| .H1S | Windows Assistance Platform Help File | 200 |
| .DRPM | Delta RPM File | 200 |
| .000 | Indexing Service Data File | 200 |
| .RMT | Router Firmware File | 200 |
| .LOG1 | Windows Registry Hive Log File | 200 |
| .CGZ | Linux Drivers Archive | 200 |
| .CI | Windows Content Indexer Catalog File | 200 |
| .LOCKFILE | Mac OS X PLIST Lock File | 200 |
| .SERVICE | Systemd Service Unit File | 200 |
| .BASH_HISTORY | Bash History File | 200 |
| .MUI | Multilingual User Interface File | 200 |
| .PREFPANE | Mac OS X System Preference Pane | 200 |
| .PWL | Windows Password List | 200 |
| .EDJ | Enlightenment Theme File | 200 |
| .DAT | Windows Registry Hive File | 201 |
| .ETL | Microsoft Event Trace Log File | 202 |
| .ELF | Executable and Linkable Format File | 205 |
| .MTZ | MIUI Theme | 207 |
| .BCD | Windows Boot Configuration Data File | 208 |
| .BASH_PROFILE | Bash Interactive Login Shell File | 209 |
| .WDF | Windows Driver Foundation File | 210 |
| .SDB | Custom Application Compatibility Database | 211 |
| .MLC | Microsoft Language Interface Pack | 211 |
| .SYS | Motorola Driver File | 212 |
| .BIO | BIOS File | 212 |
| .MSSTYLES | Windows XP Style | 213 |
| .CM0013 | Samsung Smart TV Index File | 214 |
| .DRV | Device Driver | 214 |
| .MOBILECONFIG | Apple Mobile Configuration File | 215 |
| .BOM | Mac OS X Bill of Materials File | 217 |
| .LFS | Samsung Phone params.lfs File | 217 |
| .PIT | Samsung Phone Firmware File | 217 |
| .C32 | Syslinux COM32 Module | 218 |
| .0 | Shared Library Link File | 218 |
| .PNF | Precompiled INF File | 219 |
| .HHK | HTML Help Index | 220 |
| .DIMAX | DiMAX Firmware Image File | 220 |
| .GROUP | Windows Contacts Group File | 220 |
| .WEBPNP | Web Point and Print File | 220 |
| .MBR | Master Boot Record File | 220 |
| .208 | ASUS Notebook BIOS 208 Update File | 221 |
| .DIAGCAB | Troubleshooting Pack Cabinet File | 221 |
| .ADM | Administrative Template File | 222 |
| .EFI | Extensible Firmware Interface File | 223 |
| .INS | Internet Naming Service File | 224 |
| .IMG3 | iPhone IMG3 File | 225 |
| .3FS | Puppy Linux Save State File | 225 |
| .MSP | Windows Installer Patch | 226 |
| .POL | Windows Policy File | 226 |
| .SDT | Siemens Desktop Theme File | 226 |
| .PROFILE | Bash Shell Profile | 229 |
| .MOD | GRUB Module | 229 |
| .CAT | Windows Catalog File | 230 |
| .FX | ReadyBoot Trace File | 230 |
| .DTHUMB | Android Data Thumbnail | 230 |
| .LOG2 | Windows Registry Hive Log 2 File | 231 |
| .IME | Windows Input Method Editor File | 233 |
| .SAVEDSEARCH | Spotlight Saved Search | 233 |
| .IOPLIST | Mac OS X IOPLIST File | 233 |
| .FIRM | Boot9Strap 3DS Firmware File | 233 |
| .CMO | ASUS BIOS File | 233 |
| .HVE | Windows Registry Hive File | 233 |
| .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 |
| .PPD | PostScript Printer Description File | 239 |
| .WPX | Printer Description File | 240 |
| .KEY | Security Key | 240 |
| .DIT | Active Directory Information Tree File | 240 |
| .SBF | Android System File | 240 |
| .CRASH | Mac OS X Crash Log File | 242 |
| .FPBF | Mac OS X Burn Folder | 243 |
| .DEV | Windows Device Driver File | 243 |
| .PDR | Windows Port Driver | 243 |
| .LST | GRUB Boot List File | 244 |
| .SHD | Windows Print Job Shadow File | 244 |
| .PRF | Windows System File | 244 |
| .AOS | ARCHOS PCtablet Firmware File | 244 |
| .8XU | TI-83 and TI-84 Plus Operating System File | 244 |
| .ADML | Group Policy Language-Specific Administrative Template | 247 |
| .MBN | Multi Boot Image | 248 |
| .ODEX | Optimized Dalvik Executable | 248 |
| .GRP | Windows Program Manager Group | 250 |
| .SWP | Swap File | 250 |
| .CHG | Windows Net Logon File | 250 |
| .SCHEMAS | GConf Schema Definition File | 250 |
| .NB0 | Device Boot Loader Image | 250 |
| .SQM | Service Quality Monitoring File | 250 |
| .CPQ | Compaq OEM Disc Configuration File | 250 |
| .ITEMDATA-MS | Windows 8 Start Screen Item Data File | 250 |
| .MUI_CCCD5AE0 | Hid User Library | 250 |
| .SHSH | iPhone/iPod Touch SHSH Blob File | 250 |
| .HLP | Windows Help File | 250 |
| .SBN | Cisco IP Phone Firmware File | 250 |
| .TDZ | Drobo Firmware File | 250 |
| .386 | Windows Virtual Device Driver | 251 |
| .HDMP | Windows Heap Dump | 256 |
| .IDX | Index File | 257 |
| .HHC | HTML Help Table of Contents | 258 |
| .FLG | Puppy Linux Partition Flag File | 258 |
| .PS2 | Microsoft Search Catalog Index File | 258 |
| .WER | Windows Error Report | 261 |
| .METADATA_NEVER_INDEX | Spotlight Never Index File | 262 |
| .DFU | iOS DFU File | 264 |
| .NLS | Microsoft National Language Support File | 264 |
| .BLF | CLFS Base Log File | 264 |
| .2FS | Puppy Linux Save State File | 264 |
| .PFX | PKCS #12 Certificate File | 265 |
| .ICL | Windows Icon Library File | 267 |
| .THA | Windows Thai Noise-Words List File | 267 |
| .8CU | TI-84 Plus C Operating System File | 267 |
| .KO | Linux Kernel Module File | 267 |
| .PRO | TurboIntegrator Process Definition File | 267 |
| .PRINTEREXPORT | Windows Printer Migration File | 267 |
| .CHK | Netgear Router Firmware File | 267 |
| .CPI | Codepage Information File | 267 |
| .ADV | Audio Driver File | 271 |
| .CHT | Windows Chinese Traditional Noise-Word List File | 271 |
| .TRX_DLL | Windows Startup File | 275 |
| .NBH | ROM Update Utility Image File | 275 |
| .CONFIGPROFILE | Apple Configuration Profile | 275 |
| .MI4 | Audio Player Firmware File | 275 |
| .ATAHD | ATA Hard Drive Flag File | 275 |
| .MSSTYLE | Windows XP Unsigned Style | 275 |
| .PRT | Printer Driver File | 278 |
| .IM4P | IMG4 Payload File | 280 |
| .KS | Kickstart File | 280 |
| .RUF | Samsung DVD and Blu-ray Player Firmware File | 281 |
| .SAVER | Mac OS X Screen Saver | 283 |
| .STR | Windows Screensaver File | 285 |
| .XRM-MS | Microsoft Security Certificate | 286 |
| .CUSTOMDESTINATIONS-MS | Windows 7 Jump List File | 287 |
| .SPL | Windows Print Spool File | 287 |
| .KEXT | Mac OS X Kernel Extension | 287 |
| .THUMBNAILS | Android Thumbnails Folder | 288 |
| .MUM | Windows Vista Update Package | 289 |
| .PS1 | Microsoft Indexing Service Data File | 292 |
| .BK2 | Windows Indexing Service Data File | 295 |
| .CAP | ASUS BIOS Update File | 295 |
| .EFIRES | EFI Image File | 300 |
| .CM0012 | Configuration Management File | 300 |
| .KDZ | LG Mobile Device Firmware | 300 |
| .LPD | LPD Daemon Print Permissions File | 300 |
| .TCO2 | TI-Nspire CX II Operating System File | 300 |
| .GMMP | WCS Gamut Map Model Profile | 300 |
| .CHS | Windows Chinese Noise-Word List File | 300 |
| .MEM | Parallels Desktop Memory Dump File | 300 |
| .RFW | Rockchip Firmware File | 300 |
| .HSH | Windows Catalog Search Index File | 300 |
| .PID | Creative Driver File | 300 |
| .HPJ | Help Project File | 300 |
| .DLX | Renamed DLL File | 300 |
| .FID | Microsoft Catalog Indexing Service File | 300 |
| .ESCOPY | ES File Explorer File Manager Temporary File | 300 |
| .DIAGPKG | Troubleshooting Pack File | 300 |
| .XFB | Xserve RAID Firmware Binary File | 300 |
| .UCE | Windows UCE System File | 300 |
| .PROVISIONPROFILE | Apple Provision Profile | 300 |
| .IFW | INTUS Firmware File | 300 |
| .TA | Sony Firmware File | 300 |
| .CPR | Windows Phone Display Settings File | 309 |
| .GRL | Windows Update Status File | 314 |
| .SO.0 | Unix Shared Library File | 314 |
| .SCF | Windows Explorer Command | 315 |
| .NTFS | NTFS Partition File | 317 |
| .FL1 | Lenovo BIOS Update File | 320 |
| .BMK | Help Bookmarks | 320 |
| .KBD | Keyboard Layout Script | 325 |
| .DEVICEMETADATA-MS | Device Metadata Package | 325 |
| .FFA | Find Fast Status File | 325 |
| .DYC | Xerox Printer Driver Configuration File | 325 |
| .PPM | Post Programmable Memory File | 333 |
| .QKY | Quirky Kernel | 333 |
| .FFO | Find Fast Document Properties Cache | 333 |
| .EVTX | Windows 7 Event Log File | 336 |
| .ME | Puppy Linux Partition Flag File | 337 |
| .DSS | DCC Active Designer File | 340 |
| .IDI | EVA Controller Event Log | 340 |
| .AUTOMATICDESTINATIONS-MS | Windows Jump List File | 340 |
| .SB | Slax Bundle | 342 |
| .VGD | Generic CADD VGA Driver | 343 |
| .FTS | Full Text Search | 343 |
| .SCAP | EFI Firmware File | 350 |
| .MYDOCS | Send To My Documents | 350 |
| .LPD | Lookout Protocol Driver File | 350 |
| .PLASMOID | Plasma Widget | 350 |
| .WPH | Phoenix BIOS File | 350 |
| .IPOD | Rockbox Firmware File | 350 |
| .IPTHEME | IconPackager Raw Theme File | 350 |
| .RCO | PlayStation Portable Resource File | 350 |
| .TRASHES | macOS USB Flash Drive Trash Folder | 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 |
| .EMERALD | Emerald Theme | 400 |
| .PANIC | Kernel Panic File | 400 |
| .FFL | Find Fast Document List | 400 |
| .CDMP | WCS Device Model Profile | 400 |
| .DIAGCFG | Troubleshooting Pack Configuration File | 400 |
| .IUS | InfoTMIC Firmware Update File | 400 |
| .NETWORKCONNECT | Apple Network Connect Document | 400 |
| .MMV | Magnex Firmware File | 400 |
| .SIN | Sony Xperia Firmware File | 400 |
| .KOR | Windows Korean Noise-Words List File | 400 |
| .REGLNK | Registry Editor Shortcut File | 400 |
| .RCV | BIOS Recovery File | 400 |
| .TRASHINFO | Linux Trash Metadata File | 400 |
| .89U | TI-89 Titanium Operating System File | 400 |
| .FTG | Full Text Group | 400 |
| .ANN | Help Annotations | 420 |
| .HELP | Mac OS X Help Book | 444 |
| .INTERNETCONNECT | Apple Internet Connect Document | 450 |
| .RC2 | Samsung Mobile Device Firmware File | 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