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.
Extension | File Type | Popularity |
---|---|---|
.ADMX | Group Policy Administrative Template File | 4.4 |
.RMT | Router Firmware File | 4.4 |
.AML | ACPI Machine Language File | 4.3 |
.VGA | VGA Display Driver | 4.3 |
.SHSH2 | iOS SHSH Blob | 4.3 |
.REG | Registry File | 4.3 |
.CUR | Windows Cursor Image | 4.3 |
.ITEMDATA-MS | Windows 8 Start Screen Item Data File | 4.3 |
.ANI | Windows Animated Cursor | 4.3 |
.CLB | COM+ Catalog File | 4.3 |
.REGTRANS-MS | Registry Transaction Log File | 4.3 |
.WDGT | Dashboard Widget | 4.3 |
.NT | Windows NT Startup File | 4.3 |
.SERVICE | Systemd Service Unit File | 4.3 |
.ICNS | macOS Icon Resource | 4.2 |
.DLL | Dynamic Link Library | 4.2 |
.DESKTHEMEPACK | Windows 8 Desktop Theme Pack File | 4.2 |
.INF_LOC | Windows Driver Information Cache File | 4.2 |
.ICONPACKAGE | IconPackager Theme File | 4.2 |
.SEARCHCONNECTOR-MS | Windows Search Connector File | 4.2 |
.PK2 | Silkroad Online Game Data File | 4.2 |
.HVE | Windows Registry Hive File | 4.2 |
.DVD | DOS Device Driver | 4.2 |
.DMP | Windows Memory Dump | 4.2 |
.DESKLINK | Desktop Shortcut | 4.2 |
.THEME | Microsoft Plus! Desktop Theme | 4.2 |
.HIV | Windows Registry Hive File | 4.2 |
.VX_ | Compressed Virtual Device Driver File | 4.2 |
.LNK | Windows Shortcut | 4.2 |
.QVM | Q Virtual Machine | 4.2 |
.MDMP | Windows Minidump | 4.2 |
.EBD | Windows EBD System File | 4.1 |
.LOCKFILE | Mac OS X PLIST Lock File | 4.1 |
.HTT | Hypertext Template | 4.1 |
.FTF | FlashTool Firmware File | 4.1 |
.ELF | Executable and Linkable Format File | 4.1 |
.SYS | Windows System File | 4.1 |
.LIBRARY-MS | Windows Library Description File | 4.1 |
.PCK | System Center Configuration Manager Package File | 4.1 |
.ICO | Icon File | 4.1 |
.SFCACHE | ReadyBoost Cache File | 4.1 |
.MOD | GRUB Module | 4.1 |
.ASEC | Android Secure Application File | 4.1 |
.FIRM | Boot9Strap 3DS Firmware File | 4.1 |
.PROP | Android Build Properties File | 4.1 |
.MANIFEST | Windows Application Manifest File | 4.1 |
.NFO | System Information File | 4.1 |
.ION | File Description File | 4.0 |
.MUI | Multilingual User Interface File | 4.0 |
.000 | Indexing Service Data File | 4.0 |
.ETL | Microsoft Event Trace Log File | 4.0 |
.BASH_HISTORY | Bash History File | 4.0 |
.CGZ | Linux Drivers Archive | 4.0 |
.PWL | Windows Password List | 4.0 |
.MENU | macOS Menu Extra | 4.0 |
.MSC | Microsoft Management Console Snap-in Control File | 4.0 |
.H1S | Windows Assistance Platform Help File | 4.0 |
.EDJ | Enlightenment Theme File | 4.0 |
.CI | Windows Content Indexer Catalog File | 4.0 |
.LM | Language Model File | 4.0 |
.ZONE.IDENTIFIER | Windows Zone Identifier File | 4.0 |
.RC1 | Samsung Mobile Device Firmware File | 4.0 |
.MAPIMAIL | Send To Mail Recipient | 4.0 |
.PREFPANE | Mac OS X System Preference Pane | 4.0 |
.TIMER | Systemd Unit Configuration File | 4.0 |
.BIN | Router Firmware File | 4.0 |
.DAT | Windows Registry Hive File | 4.0 |
.CM0013 | Samsung Smart TV Index File | 4.0 |
.SCR | Windows Screensaver | 4.0 |
.CAB | Windows Cabinet File | 3.9 |
.EFI | Extensible Firmware Interface File | 3.9 |
.FX | ReadyBoot Trace File | 3.9 |
.LOG1 | Windows Registry Hive Log File | 3.9 |
.ADM | Administrative Template File | 3.9 |
.WDF | Windows Driver Foundation File | 3.9 |
.BASHRC | Bash Non-Interactive Login Shell File | 3.9 |
.MLC | Microsoft Language Interface Pack | 3.9 |
.LFS | Samsung Phone params.lfs File | 3.9 |
.SDB | Application Compatibility Database | 3.9 |
.FOTA | Firmware Over-the-Air File | 3.9 |
.MSSTYLES | Windows XP Style | 3.9 |
.MOBILECONFIG | Apple Mobile Configuration File | 3.9 |
.3FS | Puppy Linux Save State File | 3.8 |
.PIT | Samsung Phone Firmware File | 3.8 |
.C32 | Syslinux COM32 Module | 3.8 |
.SYS | Motorola Cell Phone Driver | 3.8 |
.73U | TI-73 Explorer Operating System File | 3.8 |
.TRX_DLL | Windows Startup File | 3.8 |
.PNF | Precompiled INF File | 3.8 |
.MTZ | MIUI Theme | 3.8 |
.0 | Android CA Digital Certificate | 3.8 |
.HHK | HTML Help Index | 3.8 |
.PDR | Windows Port Driver | 3.8 |
.WEBPNP | Web Point and Print File | 3.8 |
.SBN | Cisco IP Phone Firmware File | 3.8 |
.208 | ASUS Notebook BIOS 208 Update File | 3.8 |
.0 | Shared Library Link File | 3.8 |
.BCD | Windows Boot Configuration Data File | 3.8 |
.BASH_PROFILE | Bash Interactive Login Shell File | 3.8 |
.DIT | Active Directory Information Tree File | 3.8 |
.DTHUMB | Android Data Thumbnail | 3.8 |
.MBR | Master Boot Record File | 3.8 |
.INS | Internet Naming Service File | 3.8 |
.DRV | Device Driver | 3.8 |
.NLT | Windows Transliteration File | 3.8 |
.MUI_CCCD5AE0 | Hid User Library | 3.8 |
.PLASMOID | Plasma Widget | 3.8 |
.IMG3 | iPhone IMG3 File | 3.8 |
.PRO | TurboIntegrator Process Definition File | 3.8 |
.IOPLIST | Mac OS X IOPLIST File | 3.8 |
.DIAGCAB | Troubleshooting Pack Cabinet File | 3.7 |
.CAT | Windows Catalog File | 3.7 |
.HDMP | Windows Heap Dump | 3.7 |
.POL | Windows Policy File | 3.7 |
.DRPM | Delta RPM File | 3.7 |
.NLS | Microsoft National Language Support File | 3.7 |
.SDT | Siemens Desktop Theme File | 3.7 |
.NB0 | Device Boot Loader Image | 3.7 |
.AOS | ARCHOS PCtablet Firmware File | 3.7 |
.CPL | Windows Control Panel Item | 3.7 |
.PPD | PostScript Printer Description File | 3.7 |
.PAT | DiskStation Manager Installation File | 3.7 |
.MSP | Windows Installer Patch | 3.7 |
.BIO | BIOS File | 3.7 |
.CANNEDSEARCH | Apple Predefined Search | 3.7 |
.CHS | Windows Chinese Noise-Word List File | 3.7 |
.SAVEDSEARCH | Spotlight Saved Search | 3.7 |
.1 | Unix Section 1 Manual Page | 3.6 |
.VXD | Virtual Device Driver | 3.6 |
.SHD | Windows Print Job Shadow File | 3.6 |
.CM0012 | Configuration Management File | 3.6 |
.HLP | Windows Help File | 3.6 |
.JOB | Windows Task Scheduler Job File | 3.6 |
.SBF | Android System File | 3.6 |
.SQM | Service Quality Monitoring File | 3.6 |
.AX | DirectShow Filter | 3.6 |
.WPX | Printer Description File | 3.6 |
.8CU | TI-84 Plus C Operating System File | 3.6 |
.CNT | Help Contents File | 3.6 |
.CRASH | Mac OS X Crash Log File | 3.6 |
.KEXT | Mac OS X Kernel Extension | 3.6 |
.MBN | Multi Boot Image | 3.6 |
.FPBF | Mac OS X Burn Folder | 3.6 |
.GRP | Windows Program Manager Group | 3.6 |
.2FS | Puppy Linux Save State File | 3.6 |
.IDX | Index File | 3.6 |
.8XU | TI-83 and TI-84 Plus Operating System File | 3.6 |
.PRF | Windows System File | 3.5 |
.CONFIGPROFILE | Apple Configuration Profile | 3.5 |
.IME | Windows Input Method Editor File | 3.5 |
.PS2 | Microsoft Search Catalog Index File | 3.5 |
.LOG2 | Windows Registry Hive Log 2 File | 3.5 |
.ADML | Group Policy Language-Specific Administrative Template | 3.5 |
.DATABASE_UUID | Android Stale Thumbnails Identifier | 3.5 |
.PANIC | Kernel Panic File | 3.5 |
.SCHEMAS | GConf Schema Definition File | 3.5 |
.CHG | Windows Net Logon File | 3.5 |
.EMERALD | Emerald Theme | 3.5 |
.WLU | Windows Legacy Update | 3.5 |
.LEX | Spelling Dictionary File | 3.5 |
.89U | TI-89 Titanium Operating System File | 3.5 |
.B84 | TI-84 Plus CE Bundle Image | 3.5 |
.SWP | Swap File | 3.5 |
.DFU | iOS DFU File | 3.5 |
.TDZ | Drobo Firmware File | 3.5 |
.NTFS | NTFS Partition File | 3.5 |
.UTV | SmartCast TV Firmware Update | 3.5 |
.SHSH | iPhone/iPod Touch SHSH Blob File | 3.5 |
.FFX | Microsoft Find Fast Index | 3.5 |
.JOURNAL | Linux Journald Event Log | 3.5 |
.CPQ | Compaq OEM Disc Configuration File | 3.5 |
.386 | Windows Virtual Device Driver | 3.5 |
.ODEX | Optimized Dalvik Executable | 3.5 |
.LST | GRUB Boot List File | 3.5 |
.WER | Windows Error Report | 3.5 |
.DEV | Windows Device Driver File | 3.4 |
.HCD | Samsung Android Firmware File | 3.4 |
.BLF | CLFS Base Log File | 3.4 |
.3 | Unix Section 3 Manual Page | 3.4 |
.SAVER | Mac OS X Screen Saver | 3.4 |
.MUM | Windows Vista Update Package | 3.4 |
.KO | Linux Kernel Module File | 3.4 |
.EVT | Windows Event Viewer Log File | 3.4 |
.HHC | HTML Help Table of Contents | 3.4 |
.ADV | Audio Driver File | 3.4 |
.DIMAX | DiMAX Firmware Image File | 3.3 |
.TRASHINFO | Linux Trash Metadata File | 3.3 |
.CHK | Netgear Router Firmware File | 3.3 |
.IM4P | IMG4 Payload File | 3.3 |
.DEVICEMETADATA-MS | Device Metadata Package | 3.3 |
.PRINTEREXPORT | Windows Printer Migration File | 3.3 |
.DIC | Windows 10 Custom Spelling Dictionary | 3.3 |
.GROUP | Windows Contacts Group File | 3.3 |
.STR | Windows Screensaver File | 3.3 |
.ICL | Windows Icon Library File | 3.3 |
.PROVISIONPROFILE | Apple Provision Profile | 3.3 |
.KDZ | LG Mobile Device Firmware | 3.3 |
.KWI | Toyota Entune Update File | 3.3 |
.PROFILE | Bash Shell Profile | 3.3 |
.2 | Unix Section 2 Manual Page | 3.3 |
.THA | Windows Thai Noise-Words List File | 3.3 |
.METADATA_NEVER_INDEX | Spotlight Never Index File | 3.3 |
.FLG | Puppy Linux Partition Flag File | 3.3 |
.CHT | Windows Chinese Traditional Noise-Word List File | 3.3 |
.NETWORKCONNECT | Apple Network Connect Document | 3.3 |
.BMK | Windows Help Bookmarks | 3.3 |
.PID | Creative Driver File | 3.3 |
.RUF | Samsung DVD and Blu-ray Player Firmware File | 3.3 |
.BOM | Mac OS X Bill of Materials File | 3.3 |
.NBH | ROM Update Utility Image File | 3.3 |
.CPI | Codepage Information File | 3.3 |
.MI4 | Audio Player Firmware File | 3.3 |
.ATAHD | ATA Hard Drive Flag File | 3.3 |
.FFO | Find Fast Document Properties Cache | 3.3 |
.PRT | Printer Driver File | 3.2 |
.CAP | ASUS BIOS Update File | 3.2 |
.KBD | Keyboard Layout Script | 3.2 |
.EVTX | Windows 7 Event Log File | 3.2 |
.MYDOCS | Send To My Documents | 3.2 |
.THUMBNAILS | Android Thumbnails Folder | 3.2 |
.KS | Kickstart File | 3.1 |
.SPL | Windows Print Spool File | 3.1 |
.XRM-MS | Microsoft Security Certificate | 3.1 |
.CUSTOMDESTINATIONS-MS | Windows Jump List File | 3.1 |
.BK2 | Windows Indexing Service Data File | 3.1 |
.CPR | Windows Phone Display Settings File | 3.1 |
.HSH | Windows Catalog Search Index File | 3.0 |
.CMO | ASUS BIOS File | 3.0 |
.SIN | Sony Xperia Firmware File | 3.0 |
.DLX | Renamed DLL File | 3.0 |
.RCV | BIOS Recovery File | 3.0 |
.OZIP | OPPO Smartphone Firmware Update | 3.0 |
.4 | Unix Section 4 Manual Page | 3.0 |
.BK1 | Windows Indexing Service File | 3.0 |
.MUN | Windows System Resource Archive | 3.0 |
.MMV | Magnex Firmware File | 3.0 |
.SPRX | Signed PlayStation Relocatable Executable | 3.0 |
.SCF | Shell Command File | 3.0 |
.HPJ | Help Project File | 3.0 |
.WGZ | S60 Web Runtime Widget Package | 3.0 |
.RFW | Rockchip Firmware File | 3.0 |
.IMG2 | iPhone Firmware Image | 3.0 |
.FTR | IRIX File Type Rules File | 3.0 |
.SEFW | Secure Element Firmware | 3.0 |
.EFIRES | EFI Image File | 3.0 |
.ESCOPY | ES File Explorer File Manager Temporary File | 3.0 |
.TBRES | Microsoft Store TokenBroker Cache File | 3.0 |
.TRASH | ChromeOS Trash Storage | 3.0 |
.ISDATA | Icon Services Data | 3.0 |
.KC | macOS Kernel Extension Boot File | 3.0 |
.MEM | Parallels Desktop Memory Dump File | 3.0 |
.SELF | Signed Executable and Linkable Format | 3.0 |
.DIAGPKG | Troubleshooting Pack File | 3.0 |
.GMMP | WCS Gamut Map Model Profile | 3.0 |
.XFB | Xserve RAID Firmware Binary File | 3.0 |
.UCE | Windows UCE System File | 3.0 |
.IFW | INTUS Firmware File | 3.0 |
.TRASHES | macOS USB Flash Drive Trash Folder | 2.9 |
.SO.0 | Unix Shared Library File | 2.9 |
.GRL | Windows Update Status File | 2.9 |
.SCAP | EFI Firmware File | 2.9 |
.PS1 | Microsoft Indexing Service Data File | 2.9 |
.DSS | DCC Active Designer File | 2.8 |
.DOCK | Mac OS X Dock Extra | 2.8 |
.ME | Puppy Linux Partition Flag File | 2.8 |
.LPD | LPD Daemon Print Permissions File | 2.8 |
.FFA | Find Fast Status File | 2.8 |
.FL1 | Lenovo BIOS Update File | 2.8 |
.MSSTYLE | Windows XP Unsigned Style | 2.8 |
.AUTOMATICDESTINATIONS-MS | Windows Jump List File | 2.8 |
.RS | Windows Rating System File | 2.8 |
.IPOD | Rockbox Firmware File | 2.8 |
.KEY | Android Passcode File | 2.7 |
.PPM | Post Programmable Memory File | 2.7 |
.FTS | Windows Help Full Text Search Index | 2.7 |
.VDEX | Validated Dalvik Executable File | 2.7 |
.RC2 | Samsung Mobile Device Firmware File | 2.7 |
.IUS | InfoTMIC Firmware Update File | 2.7 |
.JETKEY | iOS Support Jet File | 2.6 |
.IDI | EVA Controller Event Log | 2.6 |
.SB | Slax Bundle | 2.6 |
.VGD | Generic CADD VGA Driver | 2.6 |
.BUD | Binary Printer Description File | 2.6 |
.RCO | PlayStation Portable Resource File | 2.5 |
.WPH | Phoenix BIOS File | 2.5 |
.KL | Android Key Layout File | 2.5 |
.IPTHEME | IconPackager Raw Theme File | 2.5 |
.LPD | Lookout Protocol Driver File | 2.5 |
.7 | Unix Section 7 Manual Page | 2.5 |
.6 | Unix Section 6 Manual Page | 2.5 |
.5 | Unix Section 5 Manual Page | 2.5 |
.DIAGCFG | Troubleshooting Pack Configuration File | 2.5 |
.PUSH_DEVICEID | Android Device Identification File | 2.5 |
.QKY | Quirky Kernel | 2.4 |
.DYC | Xerox Printer Driver Configuration File | 2.4 |
.8 | Unix Section 8 Manual Page | 2.4 |
.LOCALIZED | macOS Directory Localization File | 2.3 |
.TA | Sony Firmware File | 2.3 |
.FID | Microsoft Catalog Indexing Service File | 2.3 |
.JPN | Windows Japanese Noise-Word List File | 2.3 |
.INTERNETCONNECT | Apple Internet Connect Document | 2.3 |
.SPX | System Profiler XML Report | 2.2 |
.FTG | Full Text Group | 2.0 |
.FFL | Find Fast Document List | 2.0 |
.CDMP | WCS Device Model Profile | 2.0 |
.B83 | TI-83 Premium CE Bundle Image | 2.0 |
.TCO2 | TI-Nspire CX II Operating System File | 2.0 |
.ITS | Internet Document Set | 2.0 |
.DUB | Windows Spelling Dictionary Identifier | 2.0 |
.ROKU | Roku TV Firmware Update | 2.0 |
.BBFW | Apple Baseband Firmware Update | 2.0 |
.KOR | Windows Korean Noise-Words List File | 2.0 |
.XGF | Xiegu G Series Firmware Update | 2.0 |
.MRM | MIUI Theme Metadata | 2.0 |
.MRC | MIUI Theme Content Package | 2.0 |
.TNO | TI-Nspire Operating System File | 2.0 |
.ANN | Windows Help Annotations | 1.8 |
.REGLNK | Registry Editor Shortcut File | 1.8 |
.HELP | Mac OS X Help Book | 1.6 |
.DIFFBASE | Windows Diagnostics Tracking Diffbase File | 1.5 |
.RVP | Sharp Blu-ray Player Firmware File | 1.0 |
.IM4M | IMG4 Manifest | 1.0 |