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
.RMTRouter Firmware File
.REGRegistry File
.SHSH2iOS SHSH Blob
.VGAVGA Display Driver
.HVEWindows Registry Hive File
.REGTRANS-MSRegistry Transaction Log File
.CURWindows Cursor Image
.ANIWindows Animated Cursor
.WDGTDashboard Widget
.NTWindows NT Startup File
.DLLDynamic Link Library
.ADMXGroup Policy Administrative Template File
.DESKTHEMEPACKWindows 8 Desktop Theme Pack File
.ICONPACKAGEIconPackager Theme File
.MODGRUB Module
.PK2Silkroad Online Game Data File
.SERVICESystemd Service Unit File
.DMPWindows Memory Dump
.ICNSmacOS Icon Resource
.HIVWindows Registry Hive File
.VX_Compressed Virtual Device Driver File
.IOPLISTMac OS X IOPLIST File
.DVDDOS Device Driver
.MDMPWindows Minidump
.SEARCHCONNECTOR-MSWindows Search Connector File
.LNKWindows Shortcut
.LOCKFILEMac OS X PLIST Lock File
.HTTHypertext Template
.QVMQ Virtual Machine
.SYSWindows System File
.ELFExecutable and Linkable Format File
.THEMEMicrosoft Plus! Desktop Theme
.SFCACHEReadyBoost Cache File
.AMLACPI Machine Language File
.MANIFESTWindows Application Manifest File
.ASECAndroid Secure Application File
.ICOIcon File
.PROPAndroid Build Properties File
.IONFile Description File
.PCKSystem Center Configuration Manager Package File
.MUIMultilingual User Interface File
.ETLMicrosoft Event Trace Log File
.PWLWindows Password List
.MSCMicrosoft Management Console Snap-in Control File
.PREFPANEMac OS X System Preference Pane
.MAPIMAILSend To Mail Recipient
.CLBCOM+ Catalog File
.ZONE.IDENTIFIERWindows Zone Identifier File
.H1SWindows Assistance Platform Help File
.NLTWindows Transliteration File
.MENUmacOS Menu Extra
.RC1Samsung Mobile Device Firmware File
.FTFFlashTool Firmware File
.TIMERSystemd Unit Configuration File
.WLUWindows Legacy Update
.LMLanguage Model File
.THAWindows Thai Noise-Words List File
.NFOSystem Information File
.BASH_HISTORYBash History File
.LOG1Windows Registry Hive Log File
.EBDWindows EBD System File
.CM0013Samsung Smart TV Index File
.DESKLINKDesktop Shortcut
.FXReadyBoot Trace File
.DATWindows Registry Hive File
.INF_LOCWindows Driver Information Cache File
.000Indexing Service Data File
.MLCMicrosoft Language Interface Pack
.LFSSamsung Phone params.lfs File
.MOBILECONFIGApple Mobile Configuration File
.SDBApplication Compatibility Database
.MSSTYLESWindows XP Style
.EFIExtensible Firmware Interface File
.ITEMDATA-MSWindows 8 Start Screen Item Data File
.SCRWindows Screensaver
.FIRMBoot9Strap 3DS Firmware File
.CABWindows Cabinet File
.PITSamsung Phone Firmware File
.MTZMIUI Theme
.SYSMotorola Cell Phone Driver
.PNFPrecompiled INF File
.TRX_DLLWindows Startup File
.BINRouter Firmware File
.PS2Microsoft Search Catalog Index File
.HHKHTML Help Index
.NLSMicrosoft National Language Support File
.WEBPNPWeb Point and Print File
.SBNCisco IP Phone Firmware File
.LIBRARY-MSWindows Library Description File
.C32Syslinux COM32 Module
.0Shared Library Link File
.INSInternet Naming Service File
.FOTAFirmware Over-the-Air File
.BASHRCBash Non-Interactive Login Shell File
.IMG3iPhone IMG3 File
.PLASMOIDPlasma Widget
.POLWindows Policy File
.PDRWindows Port Driver
.HDMPWindows Heap Dump
.DIAGCABTroubleshooting Pack Cabinet File
.DRVDevice Driver
.BASH_PROFILEBash Interactive Login Shell File
.DTHUMBAndroid Data Thumbnail
.NB0Device Boot Loader Image
.PPDPostScript Printer Description File
.SDTSiemens Desktop Theme File
.MUI_CCCD5AE0Hid User Library
.KEXTMac OS X Kernel Extension
.CATWindows Catalog File
.LOG2Windows Registry Hive Log 2 File
.208ASUS Notebook BIOS 208 Update File
.SBFAndroid System File
.ADMAdministrative Template File
.SAVEDSEARCHSpotlight Saved Search
.WDFWindows Driver Foundation File
.1Unix Section 1 Manual Page
.CPLWindows Control Panel Item
.3FSPuppy Linux Save State File
.MSPWindows Installer Patch
.SHDWindows Print Job Shadow File
.TLBVAX/VMS Text Library
.HLPWindows Help File
.JOBWindows Task Scheduler Job File
.73UTI-73 Explorer Operating System File
.SQMService Quality Monitoring File
.PATDiskStation Manager Installation File
.MBRMaster Boot Record File
.EDJEnlightenment Theme File
.WPXPrinter Description File
.VXDVirtual Device Driver
.MBNMulti Boot Image
.AXDirectShow Filter
.DITActive Directory Information Tree File
.IM4PIMG4 Payload File
.IDXIndex File
.DRPMDelta RPM File
.PRFWindows System File
.BIOBIOS File
.IMEWindows Input Method Editor File
.CNTHelp Contents File
.OZIPOPPO Smartphone Firmware Update
.DATABASE_UUIDAndroid Stale Thumbnails Identifier
.LSTGRUB Boot List File
.ODEXOptimized Dalvik Executable
.SWPSwap File
.CGZLinux Drivers Archive
.SHSHiPhone/iPod Touch SHSH Blob File
.UTVSmartCast TV Firmware Update
.JOURNALLinux Journald Event Log
.PANICKernel Panic File
.CIWindows Content Indexer Catalog File
.SCHEMASGConf Schema Definition File
.NTFSNTFS Partition File
.TDZDrobo Firmware File
.LEXSpelling Dictionary File
.386Windows Virtual Device Driver
.WERWindows Error Report
.KOLinux Kernel Module File
.FPBFMac OS X Burn Folder
.STRWindows Screensaver File
.SAVERMac OS X Screen Saver
.MUMWindows Vista Update Package
.ADMLGroup Policy Language-Specific Administrative Template
.2FSPuppy Linux Save State File
.PROFILEBash Shell Profile
.RCVBIOS Recovery File
.HHCHTML Help Table of Contents
.CRASHMac OS X Crash Log File
.KWIToyota Entune Update File
.GROUPWindows Contacts Group File
.BLFCLFS Base Log File
.CONFIGPROFILEApple Configuration Profile
.PROVISIONPROFILEApple Provision Profile
.CM0012Configuration Management File
.KDZLG Mobile Device Firmware
.METADATA_NEVER_INDEXSpotlight Never Index File
.PRINTEREXPORTWindows Printer Migration File
.DFUiOS DFU File
.8XUTI-83 and TI-84 Plus Operating System File
.BCDWindows Boot Configuration Data File
.HCDSamsung Android Firmware File
.CANNEDSEARCHApple Predefined Search
.PIDCreative Driver File
.RUFSamsung DVD and Blu-ray Player Firmware File
.MI4Audio Player Firmware File
.GRPWindows Program Manager Group
.NBHROM Update Utility Image File
.89UTI-89 Titanium Operating System File
.AOSARCHOS PCtablet Firmware File
.SPLWindows Print Spool File
.PRTPrinter Driver File
.KBDKeyboard Layout Script
.VDEXValidated Dalvik Executable File
.3Unix Section 3 Manual Page
.CAPASUS BIOS Update File
.CHKNetgear Router Firmware File
.MYDOCSSend To My Documents
.8CUTI-84 Plus C Operating System File
.ICLWindows Icon Library File
.KSKickstart File
.THUMBNAILSAndroid Thumbnails Folder
.4Unix Section 4 Manual Page
.FLGPuppy Linux Partition Flag File
.ADVAudio Driver File
.CPICodepage Information File
.XRM-MSMicrosoft Security Certificate
.EVTXWindows 7 Event Log File
.SCFShell Command File
.HPJHelp Project File
.RFWRockchip Firmware File
.TRASHChromeOS Trash Storage
.ISDATAIcon Services Data
.FFXMicrosoft Find Fast Index
.MEMParallels Desktop Memory Dump File
.GMMPWCS Gamut Map Model Profile
.CHGWindows Net Logon File
.IFWINTUS Firmware File
.UCEWindows UCE System File
.NETWORKCONNECTApple Network Connect Document
.XFBXserve RAID Firmware Binary File
.CUSTOMDESTINATIONS-MSWindows Jump List File
.DEVICEMETADATA-MSDevice Metadata Package
.MMVMagnex Firmware File
.SINSony Xperia Firmware File
.TRASHINFOLinux Trash Metadata File
.DUBWindows Spelling Dictionary Identifier
.6Unix Section 6 Manual Page
.MRCMIUI Theme Content Package
.DIMAXDiMAX Firmware Image File
.SPRXSigned PlayStation Relocatable Executable
.KCmacOS Kernel Extension Boot File
.TBRESMicrosoft Store TokenBroker Cache File
.SEFWSecure Element Firmware
.IMG2iPhone Firmware Image
.DEVWindows Device Driver File
.BK2Windows Indexing Service Data File
.SO.0Unix Shared Library File
.0Android CA Digital Certificate
.TRASHESmacOS USB Flash Drive Trash Folder
.SCAPEFI Firmware File
.GRLWindows Update Status File
.PS1Microsoft Indexing Service Data File
.KEYAndroid Passcode File
.MEPuppy Linux Partition Flag File
.FFOFind Fast Document Properties Cache
.MSSTYLEWindows XP Unsigned Style
.BOMMac OS X Bill of Materials File
.LPDLPD Daemon Print Permissions File
.RSWindows Rating System File
.ATAHDATA Hard Drive Flag File
.CPRWindows Phone Display Settings File
.BMKWindows Help Bookmarks
.IPODRockbox Firmware File
.CMOASUS BIOS File
.5Unix Section 5 Manual Page
.FTSWindows Help Full Text Search Index
.WGZS60 Web Runtime Widget Package
.EVTWindows Event Viewer Log File
.AUTOMATICDESTINATIONS-MSWindows Jump List File
.IUSInfoTMIC Firmware Update File
.B84TI-84 Plus CE Bundle Image
.EMERALDEmerald Theme
.DIAGPKGTroubleshooting Pack File
.RC2Samsung Mobile Device Firmware File
.CPQCompaq OEM Disc Configuration File
.DSSDCC Active Designer File
.EFIRESEFI Image File
.IDIEVA Controller Event Log
.DLXRenamed DLL File
.BK1Windows Indexing Service File
.CHSWindows Chinese Noise-Word List File
.CHTWindows Chinese Traditional Noise-Word List File
.JETKEYiOS Support Jet File
.SBSlax Bundle
.VGDGeneric CADD VGA Driver
.PROTurboIntegrator Process Definition File
.DOCKMac OS X Dock Extra
.WPHPhoenix BIOS File
.LPDLookout Protocol Driver File
.FFAFind Fast Status File
.IPTHEMEIconPackager Raw Theme File
.RCOPlayStation Portable Resource File
.PPMPost Programmable Memory File
.FL1Lenovo BIOS Update File
.ROKURoku TV Firmware Update
.PUSH_DEVICEIDAndroid Device Identification File
.HSHWindows Catalog Search Index File
.QKYQuirky Kernel
.SELFSigned Executable and Linkable Format
.KLAndroid Key Layout File
.ESCOPYES File Explorer File Manager Temporary File
.DICWindows 10 Custom Spelling Dictionary
.LOCALIZEDmacOS Directory Localization File
.2Unix Section 2 Manual Page
.JPNWindows Japanese Noise-Word List File
.FTRIRIX File Type Rules File
.IM4MIMG4 Manifest
.INTERNETCONNECTApple Internet Connect Document
.BUDBinary Printer Description File
.8Unix Section 8 Manual Page
.DYCXerox Printer Driver Configuration File
.ANNWindows Help Annotations
.TCO2TI-Nspire CX II Operating System File
.MUNWindows System Resource Archive
.DIAGCFGTroubleshooting Pack Configuration File
.SPXSystem Profiler XML Report
.7Unix Section 7 Manual Page
.XGFXiegu G Series Firmware Update
.MRMMIUI Theme Metadata
.TNOTI-Nspire Operating System File
.ITSInternet Document Set
.FIDMicrosoft Catalog Indexing Service File
.KORWindows Korean Noise-Words List File
.TASony Firmware File
.REGLNKRegistry Editor Shortcut File
.B83TI-83 Premium CE Bundle Image
.HELPMac OS X Help Book
.FFLFind Fast Document List
.FTGFull Text Group
.BBFWApple Baseband Firmware Update
.CDMPWCS Device Model Profile
.DIFFBASEWindows Diagnostics Tracking Diffbase File
.RVPSharp Blu-ray Player Firmware File