| Extension Abbreviation | Extension Full name | How to open the File Extension |
|---|---|---|
| .0 | Shared Library Link File | How to open .0 file |
| .0 | Indexing Service Data File | How to open .0 file |
| .208 | ASUS Notebook BIOS 208 Update File | How to open .208 file |
| .386 | Windows Virtual Device Driver | How to open .386 file |
| .2fs | Puppy Linux Save State File | How to open .2fs file |
| .3fs | Puppy Linux Save State File | How to open .3fs file |
| .73u | TI-73 Explorer Operating System File | How to open .73u file |
| .89u | TI-89 Titanium Operating System File | How to open .89u file |
| .8cu | TI-84 Plus C Operating System File | How to open .8cu file |
| .8xu | TI-83 and TI-84 Plus Operating System File | How to open .8xu file |
| .adm | Administrative Template File | How to open .adm file |
| .adml | Group Policy Language-Specific Administrative Template | How to open .adml file |
| .admx | Group Policy Administrative Template File | How to open .admx file |
| .adv | Audio Driver File | How to open .adv file |
| .aml | ACPI Machine Language File | How to open .aml file |
| .ani | Windows Animated Cursor | How to open .ani file |
| .aos | ARCHOS PCtablet Firmware File | How to open .aos file |
| .asec | Android Secure Application File | How to open .asec file |
| .atahd | ATA Hard Drive Flag File | How to open .atahd file |
| .automaticdestinations-ms | Windows Jump List File | How to open .automaticdestinations-ms file |
| .bash_history | Bash History File | How to open .bash_history file |
| .bash_profile | Bash Interactive Login Shell File | How to open .bash_profile file |
| .bashrc | Bash Non-Interactive Login Shell File | How to open .bashrc file |
| .bcd | Windows Boot Configuration Data File | How to open .bcd file |
| .bio | BIOS File | How to open .bio file |
| .bk1 | Windows Indexing Service File | How to open .bk1 file |
| .bk2 | Windows Indexing Service Data File | How to open .bk2 file |
| .blf | CLFS Base Log File | How to open .blf file |
| .bmk | Help Bookmarks | How to open .bmk file |
| .bom | Mac OS X Bill of Materials File | How to open .bom file |
| .bud | Binary Printer Description File | How to open .bud file |
| .c32 | Syslinux COM32 Module | How to open .c32 file |
| .cab | Windows Cabinet File | How to open .cab file |
| .cannedsearch | Apple Predefined Search | How to open .cannedsearch file |
| .cap | ASUS BIOS Update File | How to open .cap file |
| .cat | Windows Catalog File | How to open .cat file |
| .cdmp | WCS Device Model Profile | How to open .cdmp file |
| .ci | Windows Content Indexer Catalog File | How to open .ci file |
| .clb | COM+ Catalog File | How to open .clb file |
| .cm0012 | Configuration Management File | How to open .cm0012 file |
| .cm0013 | Samsung Smart TV Index File | How to open .cm0013 file |
| .cmo | ASUS BIOS File | How to open .cmo file |
| .cnt | Help Contents File | How to open .cnt file |
| .configprofile | Apple Configuration Profile | How to open .configprofile file |
| .cpi | Codepage Information File | How to open .cpi file |
| .cpl | Windows Control Panel Item | How to open .cpl file |
| .cpq | Compaq OEM Disc Configuration File | How to open .cpq file |
| .cpr | Windows Phone Display Settings File | How to open .cpr file |
| .crash | Mac OS X Crash Log File | How to open .crash file |
| .cur | Windows Cursor | How to open .cur file |
| .customdestinations-ms | Windows Jump List File | How to open .customdestinations-ms file |
| .dat | Windows Registry Hive File | How to open .dat file |
| .desklink | Desktop Shortcut | How to open .desklink file |
| .deskthemepack | Windows 8 Desktop Theme Pack File | How to open .deskthemepack file |
| .devicemetadata-ms | Device Metadata Package | How to open .devicemetadata-ms file |
| .dfu | iOS DFU File | How to open .dfu file |
| .diagcab | Troubleshooting Pack Cabinet File | How to open .diagcab file |
| .diagcfg | Troubleshooting Pack Configuration File | How to open .diagcfg file |
| .diagpkg | Troubleshooting Pack File | How to open .diagpkg file |
| .diffbase | Windows Diagnostics Tracking Diffbase File | How to open .diffbase file |
| .dimax | DiMAX Firmware Image File | How to open .dimax file |
| .dit | Active Directory Information Tree File | How to open .dit file |
| .dll | Dynamic Link Library | How to open .dll file |
| .dlx | Renamed DLL File | How to open .dlx file |
| .dmp | Windows Memory Dump | How to open .dmp file |
| .dock | Mac OS X Dock Extra | How to open .dock file |
| .drpm | Delta RPM File | How to open .drpm file |
| .drv | Device Driver | How to open .drv file |
| .dthumb | Android Data Thumbnail | How to open .dthumb file |
| .dub | Windows Spelling Dictionary Identifier | How to open .dub file |
| .dvd | DOS Device Driver | How to open .dvd file |
| .dyc | Xerox Printer Driver Configuration File | How to open .dyc file |
| .ebd | Windows EBD System File | How to open .ebd file |
| .edj | Enlightenment Theme File | How to open .edj file |
| .efi | Extensible Firmware Interface File | How to open .efi file |
| .efires | EFI Image File | How to open .efires file |
| .elf | Executable and Linkable Format File | How to open .elf file |
| .emerald | Emerald Theme | How to open .emerald file |
| .escopy | ES File Explorer File Manager Temporary File | How to open .escopy file |
| .etl | Microsoft Event Trace Log File | How to open .etl file |
| .evt | Windows Event Viewer Log File | How to open .evt file |
| .evtx | Windows 7 Event Log File | How to open .evtx file |
| .ffa | Find Fast Status File | How to open .ffa file |
| .ffl | Find Fast Document List | How to open .ffl file |
| .ffo | Find Fast Document Properties Cache | How to open .ffo file |
| .ffx | Microsoft Find Fast Index | How to open .ffx file |
| .fid | Microsoft Catalog Indexing Service File | How to open .fid file |
| .firm | Boot9Strap 3DS Firmware File | How to open .firm file |
| .fl1 | Lenovo BIOS Update File | How to open .fl1 file |
| .flg | Puppy Linux Partition Flag File | How to open .flg file |
| .fota | Firmware Over-the-Air File | How to open .fota file |
| .fpbf | Mac OS X Burn Folder | How to open .fpbf file |
| .ftf | FlashTool Firmware File | How to open .ftf file |
| .ftg | Full Text Group | How to open .ftg file |
| .fts | Full Text Search | How to open .fts file |
| .fx | ReadyBoot Trace File | How to open .fx file |
| .gmmp | WCS Gamut Map Model Profile | How to open .gmmp file |
| .grl | Windows Update Status File | How to open .grl file |
| .group | Windows Contacts Group File | How to open .group file |
| .grp | Windows Program Manager Group | How to open .grp file |
| .h1s | Windows Assistance Platform Help File | How to open .h1s file |
| .hcd | Samsung Android Firmware File | How to open .hcd file |
| .hdmp | Windows Heap Dump | How to open .hdmp file |
| .help | Mac OS X Help Book | How to open .help file |
| .hhc | HTML Help Table of Contents | How to open .hhc file |
| .hhk | HTML Help Index | How to open .hhk file |
| .hiv | Windows Registry Hive File | How to open .hiv file |
| .hlp | Windows Help File | How to open .hlp file |
| .hpj | Help Project File | How to open .hpj file |
| .hsh | Windows Catalog Search Index File | How to open .hsh file |
| .htt | Hypertext Template File | How to open .htt file |
| .hve | Windows Registry Hive File | How to open .hve file |
| .chg | Windows Net Logon File | How to open .chg file |
| .chk | Netgear Router Firmware File | How to open .chk file |
| .chs | Windows Chinese Noise-Word List File | How to open .chs file |
| .cht | Windows Chinese Traditional Noise-Word List File | How to open .cht file |
| .icl | Windows Icon Library File | How to open .icl file |
| .icns | macOS Icon Resource File | How to open .icns file |
| .ico | Icon File | How to open .ico file |
| .iconpackage | IconPackager Theme File | How to open .iconpackage file |
| .idi | EVA Controller Event Log | How to open .idi file |
| .ifw | INTUS Firmware File | How to open .ifw file |
| .im4p | IMG4 Payload File | How to open .im4p file |
| .ime | Windows Input Method Editor File | How to open .ime file |
| .img3 | iPhone IMG3 File | How to open .img3 file |
| .inf_loc | Windows Driver Information Cache File | How to open .inf_loc file |
| .ins | Internet Naming Service File | How to open .ins file |
| .internetconnect | Apple Internet Connect Document | How to open .internetconnect file |
| .ion | File Description File | How to open .ion file |
| .ioplist | Mac OS X IOPLIST File | How to open .ioplist file |
| .ipod | Rockbox Firmware File | How to open .ipod file |
| .iptheme | IconPackager Raw Theme File | How to open .iptheme file |
| .itemdata-ms | Windows 8 Start Screen Item Data File | How to open .itemdata-ms file |
| .its | Internet Document Set | How to open .its file |
| .ius | InfoTMIC Firmware Update File | How to open .ius file |
| .job | Windows Task Scheduler Job File | How to open .job file |
| .jpn | Windows Japanese Noise-Word List File | How to open .jpn file |
| .kdz | LG Mobile Device Firmware | How to open .kdz file |
| .kext | Mac OS X Kernel Extension | How to open .kext file |
| .ko | Linux Kernel Module File | How to open .ko file |
| .kor | Windows Korean Noise-Words List File | How to open .kor file |
| .ks | Kickstart File | How to open .ks file |
| .manifest | Windows Application Manifest File | How to open .manifest file |
| .mapimail | Send To Mail Recipient | How to open .mapimail file |
| .mbn | Multi Boot Image | How to open .mbn file |
| .mbr | Master Boot Record File | How to open .mbr file |
| .mdmp | Windows Minidump | How to open .mdmp file |
| .me | Puppy Linux Partition Flag File | How to open .me file |
| .mem | Parallels Desktop Memory Dump File | How to open .mem file |
| .menu | macOS Menu Extra | How to open .menu file |
| .metadata_never_index | Spotlight Never Index File | How to open .metadata_never_index file |
| .mi4 | Audio Player Firmware File | How to open .mi4 file |
| .mlc | Microsoft Language Interface Pack | How to open .mlc file |
| .mmv | Magnex Firmware File | How to open .mmv file |
| .mobileconfig | Apple Mobile Configuration File | How to open .mobileconfig file |
| .mod | GRUB Module | How to open .mod file |
| .msc | Microsoft Management Console Snap-in Control File | How to open .msc file |
| .msp | Windows Installer Patch | How to open .msp file |
| .msstyle | Windows XP Unsigned Style | How to open .msstyle file |
| .msstyles | Windows XP Style | How to open .msstyles file |
| .mtz | MIUI Theme | How to open .mtz file |
| .mui | Multilingual User Interface File | How to open .mui file |
| .mui_cccd5ae0 | Hid User Library | How to open .mui_cccd5ae0 file |
| .mum | Windows Vista Update Package | How to open .mum file |
| .mun | Windows System Resource Archive | How to open .mun file |
| .mydocs | Send To My Documents | How to open .mydocs file |
| .nb0 | Device Boot Loader Image | How to open .nb0 file |
| .nbh | ROM Update Utility Image File | How to open .nbh file |
| .networkconnect | Apple Network Connect Document | How to open .networkconnect file |
| .nfo | System Information File | How to open .nfo file |
| .nls | Microsoft National Language Support File | How to open .nls file |
| .nlt | Windows Transliteration File | How to open .nlt file |
| .nt | Windows NT Startup File | How to open .nt file |
| .ntfs | NTFS Partition File | How to open .ntfs file |
| .odex | Optimized Dalvik Executable | How to open .odex file |
| .panic | Kernel Panic File | How to open .panic file |
| .pat | DiskStation Manager Installation File | How to open .pat file |
| .pck | System Center Configuration Manager Package File | How to open .pck file |
| .pdr | Windows Port Driver | How to open .pdr file |
| .pfx | PKCS #12 Certificate File | How to open .pfx file |
| .pid | Creative Driver File | How to open .pid file |
| .pit | Samsung Phone Firmware File | How to open .pit file |
| .pk2 | Silkroad Online Game Data File | How to open .pk2 file |
| .plasmoid | Plasma Widget | How to open .plasmoid file |
| .pnf | Precompiled INF File | How to open .pnf file |
| .pol | Windows Policy File | How to open .pol file |
| .ppd | PostScript Printer Description File | How to open .ppd file |
| .prefpane | Mac OS X System Preference Pane | How to open .prefpane file |
| .printerexport | Windows Printer Migration File | How to open .printerexport file |
| .pro | TurboIntegrator Process Definition File | How to open .pro file |
| .profile | Bash Shell Profile | How to open .profile file |
| .prop | Android Build Properties File | How to open .prop file |
| .provisionprofile | Apple Provision Profile | How to open .provisionprofile file |
| .ps1 | Microsoft Indexing Service Data File | How to open .ps1 file |
| .ps2 | Microsoft Search Catalog Index File | How to open .ps2 file |
| .pwl | Windows Password List | How to open .pwl file |
| .qky | Quirky Kernel | How to open .qky file |
| .qvm | Q Virtual Machine | How to open .qvm file |
| .rc1 | Samsung Mobile Device Firmware File | How to open .rc1 file |
| .rc2 | Samsung Mobile Device Firmware File | How to open .rc2 file |
| .rco | PlayStation Portable Resource File | How to open .rco file |
| .reg | Registry File | How to open .reg file |
| .reglnk | Registry Editor Shortcut File | How to open .reglnk file |
| .regtrans-ms | Registry Transaction Log File | How to open .regtrans-ms file |
| .rfw | Rockchip Firmware File | How to open .rfw file |
| .rmt | Router Firmware File | How to open .rmt file |
| .rs | Windows Rating System File | How to open .rs file |
| .ruf | Samsung DVD and Blu-ray Player Firmware File | How to open .ruf file |
| .rvp | Sharp Blu-ray Player Firmware File | How to open .rvp file |
| .savedsearch | Spotlight Saved Search | How to open .savedsearch file |
| .saver | Mac OS X Screen Saver | How to open .saver file |
| .sb | Slax Bundle | How to open .sb file |
| .sbf | Android System File | How to open .sbf file |
| .sbn | Cisco IP Phone Firmware File | How to open .sbn file |
| .scap | EFI Firmware File | How to open .scap file |
| .scf | Windows Explorer Command | How to open .scf file |
| .scr | Windows Screensaver | How to open .scr file |
| .sdb | Custom Application Compatibility Database | How to open .sdb file |
| .sdt | Siemens Desktop Theme File | How to open .sdt file |
| .searchconnector-ms | Windows Search Connector File | How to open .searchconnector-ms file |
| .service | Systemd Service Unit File | How to open .service file |
| .sfcache | ReadyBoost Cache File | How to open .sfcache file |
| .shd | Windows Print Job Shadow File | How to open .shd file |
| .shsh | iPhone/iPod Touch SHSH Blob File | How to open .shsh file |
| .schemas | GConf Schema Definition File | How to open .schemas file |
| .sin | Sony Xperia Firmware File | How to open .sin file |
| .so.0 | Unix Shared Library File | How to open .so.0 file |
| .spl | Windows Print Spool File | How to open .spl file |
| .spx | System Profiler XML Report | How to open .spx file |
| .sqm | Service Quality Monitoring File | How to open .sqm file |
| .sys | Windows System File | How to open .sys file |
| .sys | Motorola Driver File | How to open .sys file |
| .ta | Sony Firmware File | How to open .ta file |
| .tco2 | TI-Nspire CX II Operating System File | How to open .tco2 file |
| .tdz | Drobo Firmware File | How to open .tdz file |
| .tha | Windows Thai Noise-Words List File | How to open .tha file |
| .theme | Microsoft Plus! Desktop Theme | How to open .theme file |
| .thumbnails | Android Thumbnails Folder | How to open .thumbnails file |
| .timer | Systemd Unit Configuration File | How to open .timer file |
| .trashes | macOS USB Flash Drive Trash Folder | How to open .trashes file |
| .trashinfo | Linux Trash Metadata File | How to open .trashinfo file |
| .trx_dll | Windows Startup File | How to open .trx_dll file |
| .uce | Windows UCE System File | How to open .uce file |
| .vdex | Validated Dalvik Executable File | How to open .vdex file |
| .vga | VGA Display Driver | How to open .vga file |
| .vgd | Generic CADD VGA Driver | How to open .vgd file |
| .vx_ | Compressed Virtual Device Driver File | How to open .vx_ file |
| .vxd | Virtual Device Driver | How to open .vxd file |
| .wdf | Windows Driver Foundation File | How to open .wdf file |
| .wdgt | Dashboard Widget | How to open .wdgt file |
| .webpnp | Web Point and Print File | How to open .webpnp file |
| .wer | Windows Error Report | How to open .wer file |
| .wgz | S60 Web Runtime Widget Package | How to open .wgz file |
| .wlu | Windows Legacy Update | How to open .wlu file |
| .wph | Phoenix BIOS File | How to open .wph file |
| .wpx | Printer Description File | How to open .wpx file |
| .xfb | Xserve RAID Firmware Binary File | How to open .xfb file |
| .xrm-ms | Microsoft Security Certificate | How to open .xrm-ms file |
| .zone.identifier | Windows Zone Identifier File | How to open .zone.identifier file |
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