How To Open File Extension


System Files


File extension The full name of the file
.$$$ file extension OS/2 Operating System File Type
.$03 file extension MS-DOS Pipe
.0 file extension Linux Shared Library Link
.000 file extension CHKDSK Found Folder
.001 file extension Unix System
.100 file extension Award BIOS Upgrade File Version 1.0
.120 file extension Award BIOS Upgrade
.143 file extension Linux
.1PA file extension Microsoft Windows
.211 file extension ASUS BIOS Update
.212 file extension ASUS BIOS Update
.286 file extension Microsoft Windows Virtual Device Driver
.2GR file extension Windows VGA Graphic Drivers
.2SF file extension Puppy Linux
.32S file extension Win32s
.386 file extension Windows Virtual Device Driver
.3FS file extension Puppy Linux Save State
.3GR file extension Windows Screen Grabber For MS-DOS Applications VGA Graphics Driver
.3~6 file extension Windows 3.xx System
.4FS file extension Puppy Linux Save State
.500 file extension Linux
.89K file extension TI-89 Application
.8XU file extension Texas Instruments TI-83 Plus Operating System
.AA file extension Unix File
.AAD file extension FreeBSD
.ACCESS file extension Java Access Control
.ACCT file extension IBM AIX System
.ACV file extension OS/2 Audio Driver
.AD file extension UNIX Application Default Resource
.ADD file extension Adapter Device Driver
.ADM file extension Administrator Policy Template
.ADV file extension Gravis Ultrasound Virtual Device Driver
.AFS file extension FreeBSD
.AIX file extension IBM AIX
.ALI file extension BeOS ALI
.ALX file extension BlackBerry Application Loader
.ANN file extension Microsoft Windows Help Annotation
.APD file extension Adobe PageMaker Printer Description
.APDISK file extension Apple Mac OS X Related
.APPLEDOUBLE file extension Apple AppleDouble Resource
.APPLE_PARTITION_MAP file extension Apple Partition Scheme
.AQL file extension AOL DLL
.AQM file extension CP/M Information
.AR file extension Linux/Unix Command Library
.ARA file extension ATI Radeon Video Driver
.ASD file extension Lotus Screen Driver
.ASLQUERY file extension Apple MAC OS X Console Query
.ATAHD file extension Puppy Linux ATA Hard Drive Flag
.AUG file extension Red Hat Linux Shellvars
.AWS file extension ActiveWords System
.B file extension LILO Boot Loader Image
.BASH_HISTORY file extension Bash History
.BASH_PROFILE file extension Bash Interactive Login Shell
.BBFW file extension ITunes Firmware
.BCD file extension Microsoft Windows Boot Configuration
.BCS file extension Microsoft Windows 95 Browse Information
.BIF file extension Boot Information
.BIO file extension OS/2 BIOS
.BLF file extension Microsoft Windows Vista And Windows 7 Registry
.BNP file extension Sony HD Camera System
.BNR file extension Nintento Wii Homebrew
.BOM file extension Apple Mac OS X Bill Of Materials
.BOOTEFISIGNATURE file extension Bootefisignature Mac OS X System
.BPD file extension Pscript Binary PostScript Printer Description
.BRIDGESUPPORT file extension Bridgesupport Mac OS X File Extension
.BSD file extension FacetWin Bitwise Backup Set
.BSDIFF file extension Cygwin
.BUP file extension Brother Embroidery System
.BZI file extension Dariks Boot And Nuke Kernel
.CAT file extension Microsoft Security Catalog
.CB file extension Microsoft Clean Boot
.CDD file extension Chromeleon Device Driver
.CDEV file extension Macintosh II Control Panel
.CDF-MS file extension ClickOnce Deployment Binary Manifest
.CDFS file extension Compact Disc File System
.CDM file extension Novell NetWare Disk Drivers NPA
.CGK file extension BlueSoleil
.CGZ file extension Linux Drivers Archive
.CIN file extension OS/2 Change Control
.CMG file extension Cramfs ROM File System Package
.CNM file extension Microsoft Windows Application Menu Options And Setup
.CNV file extension Microsoft Word Text Conversion
.COLORPICKER file extension Apple Mac OS X Color Picker Component
.COMPONENTS file extension Mac OS X System
.CPI file extension Microsoft MS-DOS Code Page Information
.CPY file extension Atari Ramdrive CPY Commands
.CQ file extension SYSGEN Replacement
.CRMLOG file extension Microsoft Windows CRM Log
.CRP file extension MSI SecureDoc Encrypted
.CTFSYS file extension OS X Mach Kernel System
.CUB file extension Windows Installer Validation Module
.CXN file extension Conexant Driver
.DAN file extension AMD ATI Radeon Video Driver
.DAT_TUREG_OLD file extension Windows Registry
.DBL file extension Microsoft Windows XP Product Activation
.DDP file extension OS/2 Device Driver Profile
.DDZ file extension Adaptec Unix Driver
.DEV file extension Windows Device Driver
.DEVICEMANIFEST-MS file extension Microsoft Windows Device Metadata
.DIF file extension OS/2 Display Information
.DIO file extension IPaq 914c Flash
.DIR file extension Directory Indicator
.DIS file extension Soundweb Firmware
.DL file extension Masked Dynamic Link Library
.DLM file extension Dynamic Link Module
.DMD file extension OS/2 Warp Device Manager Driver
.DO7 file extension DOS 7
.DOH file extension Geoworks GEOS Dependency Information
.DOS file extension WIN95/ DOS 7 System
.DRV file extension Microsoft Windows Device Driver
.DS file extension Desktop Korn Shell
.DSK file extension Novell NetWare Disk Driver
.DSP file extension Dr.Halo Graphics Display Driver
.DSR file extension Corel WordPerfect Driver
.DS_STORE file extension Macintosh OS X Folder Information
.DT file extension Macintosh File Data Fork
.DVC file extension LoseThos Partition Drive
.DWC file extension Emulex DWC Firmware Update File Format
.EAS file extension OS/2 Extended File Attributes
.ECD file extension CoCut Plotter Printer Driver
.ECW file extension System Dll
.EFIRES file extension Xtensible Firmware Interface Image
.EMM file extension Expanded Memory Manager
.ENCR file extension Texas Instruments System
.ENV file extension HP-95 Environment
.EQUIV file extension IBM AIX System File.
.ESN file extension Windows XP System32
.ETL file extension Microsoft Windows Trace Log
.EVT file extension Microsoft Windows 2000 And XP Event Log
.EVTX file extension Microsoft Windows Vista, Windows 7, Windows 8 Event Log
.EXOPC file extension ExoPC Application
.EXT2 file extension Linux Second Extended System
.EXT4 file extension Fourth Extended Filesystem
.FFW file extension Festo Firmware
.FID file extension Windows Index
.FILE file extension AS/400 Physical
.FIN file extension AMD ATI Radeon Video Driver
.FLL file extension Visual FoxPro Dynamic Link Library
.FLT file extension OS/2 Warp Filter Device Driver
.FOLDER file extension Microsoft Windows Explorer Folder
.FS file extension NetBSD System
.FSEVENTSD file extension MAC OS X
.FSTAB file extension File System Table
.FTG file extension Microsoft Windows Help
.FWL file extension FileWrangler EXE Library
.FWU file extension Ricoh Firmare Update
.FX file extension DirectX D3DXEffect Object
.GADGET file extension Windows Sidebar Gadget
.GID file extension Microsoft Windows Help General Index
.GPD file extension Microsoft Windows Universal Printer Unidrv Minidriver
.GR2 file extension Microsoft Windows Screen Driver
.GR3 file extension Graphics Device Driver
.GRB file extension MS-DOS Shell Monitor
.GRD file extension Drivers For GRX
.GRL file extension Microsoft Windows Update Status
.GROUP file extension Linux
.GRP file extension Microsoft Windows Program Group
.GWP file extension Greetings WorkShop
.GZP file extension Gazelle System Page
.H1C file extension Windows Vista File Related To Assistance Platform (AP) Help
.H1F file extension Microsoft Windows Assistance Platform Client Help
.H1K file extension Keyword Index - Microsoft Windows Assistance Platform Client Help Related
.H1S file extension Microsoft Windows Assistance Platform Client Help
.H1T file extension Microsoft Windows Assistance Platform Client Help Related
.H1V file extension Task Metadata - Microsoft Windows Assistance Platform Client Help Related
.HAM file extension Novell NetWare Disk Drivers NPA
.HCD file extension Huawei System
.HDMP file extension Microsoft Windows Heap Dump
.HHC file extension HTML Help Table Of Contents
.HHK file extension Microsoft HTML Help Index
.HIV file extension Windows NT Registry Hive
.HLP file extension Help
.HLX file extension ATI Radeon Video Driver
.HPC file extension System Dynamic Library
.HPFS file extension OS/2 High Performance File System
.HTT file extension Microsoft HyperText Template
.HTW file extension Windows
.HV file extension Microsoft Windows Mobile Hive
.HXI file extension Microsoft Help Compiled Storage
.IA64 file extension HP-UX
.ICAP file extension Internet Preference
.ICD file extension Microsoft Windows OpenGL Installable Client Driver
.IDENTIFIER file extension Microsoft Windows Zone Identifier
.IDX_DLL file extension Microsoft Office IDX_DLL
.IFS file extension IBM OS/2 Installable System
.INA file extension MS-DOS
.INF file extension Windows Installation Script
.INP file extension Sony HD Camera System
.INS file extension Microsoft Windows Internet Naming Service
.INSTALL_BACKUP file extension AVG Shell Extension Module
.INT file extension Sony HD Camera System
.ION file extension 4DOS Description
.IOPLIST file extension Apple Mac OS X Ioplist
.IOT file extension Hitachi Ladder Editor IO Comment
.IRC file extension Nevo Infra-Red Device Code File Format
.IRIX6 file extension Irix 6
.ISWP file extension Apple ITunes IOS Firmware Update
.JFS file extension Linux/Unix Journaling System
.JLB file extension PAC Mate BX Keyboard Driver
.JNILIB file extension Mac OS X Java JNI Library
.JOB file extension Microsoft Windows Task Scheduler Task Object
.JOURNAL_INFO_BLOCK file extension Apple Mac OS Xsystem
.K48 file extension Apple IOS Kernel Cache
.KBD file extension Keyboard Script File Layout
.KDMP file extension Microsoft Windows Crash Dump
.KDZ file extension LG Firmware
.KEXT file extension Apple Mac OS X Kernel Extension
.KEY file extension Microsoft Windows 7 Registry Key
.KMD file extension Clicker Module Output
.KO file extension Linux Kernel Module
.KRM file extension Kenwood Firmware
.KSS file extension KDE Screen Saver
.LAN file extension Novell NetWare LAN Driver
.LBR file extension Lotus 1-2-3 Display Driver
.LE file extension Le Mac OS X
.LEX file extension Lex Or Flex
.LGS file extension Microsoft Windows Application Log
.LLS file extension Windows System
.LN file extension UNIX Lint
.LOCALIZED file extension MAC OS X
.LOG1 file extension Microsoft Windows Registry Hive Log
.LOG2 file extension Microsoft Windows Registry Hive Log 2
.LOW file extension PDP-10 Low Segment Of A Two-segment Program
.LPROJ file extension Mac OS X Localized Project Folder
.LS_ file extension Unix Ls Directory
.LTN file extension CD-ROM Driver
.LZT file extension HP StoreEver 1/8 G2 Tape Autoloader
.M$S file extension MindStor Firmware Update
.MACS file extension Apple Mac OS System
.MAN file extension Microsoft Windows 2000/XP Mandatory User Profile
.MAPIMAIL file extension Windows Send To Mail Recipient
.MCI file extension Media Control Interface Command Script
.MCP file extension Amiga MUI Preference Class Or Library
.MDIMPORTER file extension Spotlight Importer Setting
.MDMP file extension Microsoft Windows Minidump
.MFT file extension Microsoft Windows NTFS Master Table
.MHX file extension Fujitsu MicroController Firmware
.MKEXT file extension Mac OS X Mach Kernel Extension Memory Cache
.MLB file extension Microsoft Windows Mobile Media Library
.MNU file extension MS-DOS Mouse Menu
.MOB file extension PEN Windows Device Definition
.MOD file extension MS-DOS Implementing Support For Windows DLLs
.MOJITO file extension Limewire Kademlia
.MONITORPANEL file extension Apple Mac OS X Display Panel Plug-in File Type
.MOT file extension Linux Load Instructions
.MPA file extension Palm Memo
.MPKG file extension Meta Package
.MPS_ file extension MPW Shell
.MRG file extension Microsoft Windows Installer Merge
.MSC file extension Microsoft Management Console Control
.MSDM file extension Microsoft Windows
.MSN file extension Microsoft Windows Network Related
.MUI file extension MultiLanguage Windows Resource
.MUIMANIFEST file extension Microsoft Windows Multilingual User Interface
.MUM file extension Windows Vista Update Package
.MVA file extension Matrox Video Card Driver
.MYDOCS file extension Send To
.N81 file extension Apple IOS Kernel Cache
.N90 file extension Apple IOS Kernel Cache
.N90AP file extension IPhone Jailbreak Firmware
.NDRV file extension Apple Mac OS System Driver
.NIB file extension Interface Builder User Interface Resources
.NKEY file extension Silicon Graphics Onyx4
.NLD file extension ATI Radeon Video Driver
.NLM file extension Novell Netware Loadable Module
.NLS file extension Microsoft National Language Support
.NOMEDIA file extension Google Android OS System
.NOS file extension JDOS System
.NOT_TERMINATED file extension Mac OS X Audit Log
.NOVS file extension Novell NetWare Control Center
.NST file extension Nokia Star Torrent System
.NU4 file extension Norton Utilities DLL Root
.NU6 file extension Norton Utility System Dll
.NVU file extension Nvidia Graphic Driver
.NXD file extension AdaOS Debugging Information For A Module
.NXP file extension AdaOS Profiling Information For One Execution
.NXS file extension AdaOS Support Module
.OEM file extension OEM Install Data
.OS2 file extension Os2 System
.OSAX file extension FindFile OSAX Mac File Type
.OSC file extension Remote Installation Services Client Installation Wizard
.OSP file extension Crystal Semiconductor Driver Data
.OTH file extension Microsoft PowerToys Explorer Tool
.OV1 file extension Overlay
.OV2 file extension Overlay
.OV3 file extension Overlay
.OV4 file extension Overlay
.OV5 file extension Overlay
.OVL file extension Overlay
.OX2 file extension Orangutan X2 Firmware Update
.P5X file extension Windows System
.PAR file extension Windows 3.x Swap
.PAT file extension Synology DiskStation DSM Update
.PAYLOAD file extension Microsoft Windows Mobile
.PBD file extension PowerBuilder Dynamic Link Library
.PBP file extension Sony PlayStation Portable Firmware Image
.PCF file extension Microsoft Source Profiler Profiler Command
.PCI file extension PCI Miniport
.PCM file extension LaserJet Printer Cartridge Metric For Printer Driver
.PD0 file extension SonTek Firmware
.PDF file extension Netware Print Device Information
.PDL file extension Symbian OS Printer Driver
.PDR file extension Windows Port Device Driver
.PF file extension Windows Prefetch
.PID file extension Unix Process ID
.PKG file extension Microsoft Developer Studio Application Extension
.PLT file extension EPOC Software Platform
.PMR file extension Microsoft Windows Performance Monitor Report
.POL file extension Windows Policy
.PR2 file extension DBase IV Printer Driver
.PRD file extension Microsoft Word For DOS Printer Driver
.PREFPANE file extension Mac OS X System Preference Pane
.PRF file extension Microsoft Profiler Output
.PROFILE file extension Bash Shell Profile
.PRS file extension Norton Viewer DLL
.PRT file extension Microsoft Windows Directory
.PXE file extension Linux, Unix Network Bootable
.QCC file extension Niobrata QUCM Firmware
.QDS file extension Microsoft Windows Saved DsQuery
.QDZ file extension Stratix V Device Driver
.QFILTER file extension Mac OS X ColorSync Filter
.QKY file extension Linux Quirky Kernel
.QLGENERATOR file extension Apple Quicklook Plug-in
.QPR file extension OS/2 Print Queue Device Driver
.QTS file extension QuickTime System
.QTZ file extension MAC OS X Quartz Graphics
.QUE file extension PDP-10 Queue
.QUICKTIMECOMPONENTS file extension Mac OS X System
.RAT file extension Microsoft Windows Rating System
.RBH file extension RBH Access Technologies Firmware
.RCO file extension Sony PlayStation Portable PSP Resource
.RDL file extension Symbian Recogniser Library
.RDZ file extension Mandrake Linux Install
.REGTRANS-MS file extension Microsoft Windows Vista And Windows 7 Registry
.REL file extension Nintendo Wii Relocatable Module
.RFW file extension Rockchip Firmware
.RGU file extension Microsoft Windows Mobile Registry Entry
.RIO file extension IBM AIX System
.RISCOS file extension Acorn RISC OS
.RM7 file extension Casio Registration Memory
.RSQ file extension IBM 4690 Operating System​
.RSRC file extension MAC OS Resource
.RTB file extension NAT Proxy Servers
.RTP file extension Microsoft Software Update
.RUN file extension UNIX Shell Installer Script
.RWM file extension Windows Imaging Resource Only
.RX file extension MS-DOS 7
.SAVEDSEARCH file extension Spotlight Saved Search
.SAVER file extension Mac OS X Screen Saver
.SC file extension Framework II Display Driver
.SCAP file extension Scap Mac OS X
.SCC file extension Visual SourceSafe Control
.SCD file extension Systems Management Server (SMS) Site Control File Deletion
.SCEXE file extension HP IL02 Firmware Update
.SCR file extension Microsoft Windows Screensaver
.SCSI file extension Apple HDD Setup
.SDB file extension Custom Application Compatibility Database
.SDEV file extension Apple System 7 Control Strip Module
.SDR file extension QuickView Pro For DOS Soundcard Driver
.SEARCHINDEXCACHE file extension Mac OS X Cache
.SEED file extension Linux Preseed
.SERVICE file extension Mac OS X Service Application
.SF file extension OS/2 Work Place Shell Attribute Storage
.SF0 file extension Windows Sytem Check
.SFC file extension Microsoft Windows System Check
.SFCACHE file extension ReadyBoost Cache
.SFE file extension Logomatic V2 System
.SFS file extension Squashfs
.SGN file extension Slax Boot
.SHA file extension Unix SHAR Archive
.SHD file extension Microsoft Windows Shadow Spooler
.SHLB file extension Shlb Mac OS X System
.SHS file extension Microsoft Windows 95/98 Clipboard
.SHSH file extension Apple IPhone ECID SHSH
.SID file extension Microsoft Systems Management Server (SMS) Software Inventory Delta
.SIF file extension Microsoft Windows NT Setup Installation
.SL file extension HP-UX Shared Library
.SO file extension ELF Shared Library
.SPARC file extension SunOS 4
.SPL file extension Microsoft Windows Printing Spool
.SPREPORTER file extension Mac OS X System Profiler Reporter
.SREC file extension Motorola S-Records
.STR file extension Screensaver
.STRINGS file extension Apple Mac OS X Localization
.STY file extension DirectMusic Style
.SUPPORTED file extension MAC OS X
.SWP file extension Swap
.SYS file extension System
.SYSTEM file extension Mac OS X System
.TBR file extension Norton Desktop Custom Toolbar
.TBS file extension TuneUp Style Boot Screen
.TCI file extension MityDSP-L138 / MityDSP-6748 Memory Modules Cache
.THA file extension Microsoft Windows Shell Common DLL
.TLB file extension OLE Type Library
.TMC file extension Windows Trace Message Control
.TNR file extension GPS Pathfinder ProXR/XRS Firmware
.TRX_DLL file extension Microsoft Office TRX_DLL
.TSK file extension Microsoft Windows System32
.UAQ file extension Microsoft Windows Action Queue
.UBL file extension DM35x User Boot Loader
.UCE file extension Microsoft Windows XP System32
.UDC file extension System Management Server
.UPD file extension HP Universal Print Driver
.UXZ file extension IBM Flex CMM Update
.VAP file extension NetWare 2 Value Added Process
.VCN file extension NCDrive Vacon NX System Software
.VDX file extension Microsoft Windows 32-bit System Driver
.VET file extension VET Antivirus System
.VFS file extension Virtual File System Index
.VGD file extension VGA CADD Display Driver
.VID file extension MS-DOS Video Driver
.VMLT file extension VMLF Related
.VRS file extension Corel WordPerfect Video Resource Device Driver
.VTD file extension Microsoft Windows Custom Virtual Device Driver
.VXD file extension Microsoft Windows Virtual Device Driver
.VXX file extension IOsubsys Drive
.WCX file extension Workspace Configuration
.WDF file extension Microsoft Windows Driver Foundation
.WDGT file extension Apple Mac OS X Dashboard Widget
.WDR file extension Psion Series 3 Printer Driver
.WOA file extension Windows 3.x Swap
.WPX file extension Adobe Printer Description For Postscript Printing
.WRS file extension Corel WordPerfect Windows Printer Driver
.WSS file extension Microsoft Windows Sound System
.X86 file extension X86 Architecture
.XDSL file extension D-link Router UK Firmware Update
.XMO file extension Adobe Authorware Movie Driver
.XMS file extension Microsoft EXtended Memory Specification
.XNC file extension Modbus Slave XNC Driver Application
.ZEX file extension ZOOM MRS-802 System
._DL file extension Dynamic Link Library DLL File Form
._IPOD_CONTROL file extension Apple IPod Control
._VTI_BIN file extension SharePoint