| 1 | ALX | Microsoft | ActiveX Layout Control Format |
| 2 | APDISK | Apple, Inc. | Apple Mac OS X Related |
| 3 | APPLEDOUBLE | Apple, Inc. | Apple AppleDouble Resource |
| 4 | AQL | N/A | AOL DLL |
| 5 | AR | Microsoft | Unix Static Library |
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| 6 | BASH_HISTORY | The GNU Project | Bash History Format |
| 7 | BASH_PROFILE | The GNU Project | Bash Interactive Login Shell Format |
| 8 | BBFW | Apple, Inc. | ITunes Firmware |
| 9 | BLF | Microsoft | Microsoft Windows Vista And Windows 7 Registry Format |
| 10 | BOM | Apple | Mac OS X Bill Of Materials Format |
| 11 | BOOTEFISIGNATURE | Apple, Inc. | Bootefisignature Mac OS X System |
| 12 | BRIDGESUPPORT | Apple, Inc. | Bridgesupport Mac OS X Format Extension |
| 13 | B~K | N/A | Microsoft Windows 3.x data |
| 14 | COMPONENT | Apple | Mac OS X System Component |
| 15 | COMPONENTS | Apple, Inc. | Mac OS X System |
| 16 | CPL | Microsoft | Windows Control Panel Item |
| 17 | CTFSYS | N/A | OS X Mach Kernel System |
| 18 | CUB | Microsoft | Analysis Services Cube Format |
| 19 | DBFSEVENTSD | N/A | Mac OS X data |
| 20 | DBL | DAZ Productions | DAZ Brick Light Format |
| 21 | DLL | Microsoft | Dynamic Link Library |
| 22 | DS_STORE | Apple | Mac OS X Folder Settings Format |
| 23 | DUMP | Google | Google BreakPad Crash Log Format |
| 24 | EFI | UEFI Forum | Extensible Firmware Interface Format |
| 25 | EFIRES | Apple | EFI Image Format |
| 26 | ESN | Microsoft Corporation | Windows XP System32 |
| 27 | ETL | Microsoft | Microsoft Event Trace Log Format |
| 28 | EVT | Microsoft | Windows Event Viewer Log Format |
| 29 | EVTX | Microsoft | Windows 7 Event Log Format |
| 30 | FAILUREREQUESTS | N/A | macOS (OS X) data |
| 31 | FSEVENTSD | Apple, Inc. | MAC OS X |
| 32 | FSTAB | N/A | File System Table |
| 33 | FTG | Microsoft | Full Text Group |
| 34 | GADGET | Microsoft | Windows Gadget |
| 35 | GPD | Microsoft | Generic Printer Description Format |
| 36 | H1S | Microsoft | Windows Assistance Platform Help Format |
| 37 | H1T | Microsoft Corporation | Microsoft Windows Assistance Platform Client Help Related |
| 38 | HHC | Microsoft | HTML Help Table Of Contents |
| 39 | HHK | Microsoft | HTML Help Index |
| 40 | HLP | Microsoft | Windows Help Format |
| 41 | HTT | Microsoft | Hypertext Template Format |
| 42 | HXI | Microsoft Corporation | Microsoft Help Compiled Storage |
| 43 | INF | N/A | Setup Information Format |
| 44 | INSTALLHELPER | Apple, Inc. | Apple Mac OS X Install Helper Document |
| 45 | INSTALL_BACKUP | AVG Technologies (Grisoft) | AVG Shell Extension Module |
| 46 | ISWP | Apple, Inc. | Apple ITunes IOS Firmware Update |
| 47 | JFS | N/A | Linux/Unix Journaling System |
| 48 | JOB | Microsoft | Windows Task Scheduler Job Format |
| 49 | JOURNAL_INFO_BLOCK | Apple, Inc. | Apple Mac OS Xsystem |
| 50 | KBD | Autodesk | Keyboard Layout Script |
| 51 | KDMP | Microsoft | Windows Crash Dump Format |
| 52 | KEXT | N/A | Mac OS X Kernel Extension |
| 53 | KO | N/A | Linux Kernel Module Format |
| 54 | LN | IBM | UNIX Lint |
| 55 | LOCALIZED | Apple, Inc. | MAC OS X |
| 56 | LOCATION | N/A | Microsoft Windows 10 registry data |
| 57 | LOCK | N/A | Lock Format |
| 58 | LPROJ | N/A | Localized Project Folder |
| 59 | MAN | N/A | Unix Manual |
| 60 | MCI | N/A | Media Control Interface Format |
| 61 | MDMP | Microsoft | Windows Minidump |
| 62 | MKEXT | Apple, Inc. | Mac OS X Mach Kernel Extension Memory Cache |
| 63 | MOF | Desktop Management Task Force | Managed Object Format |
| 64 | MONITORPANEL | Apple, Inc. | Apple Mac OS X Display Panel Extension |
| 65 | MOT | NewTek | LightWave Motion Format |
| 66 | MPKG | N/A | Meta Package Format |
| 67 | MQ | Microsoft | Message Queuing Message Log File |
| 68 | MSC | Microsoft | Microsoft Management Console Snap-in Control Format |
| 69 | MUI | Microsoft | Multilingual User Interface Format |
| 70 | MUM | Microsoft | Windows Vista Update Package |
| 71 | N81 | Apple, Inc. | Apple IOS Kernel Cache |
| 72 | NIB | Apple | Interface Builder User Interface Format |
| 73 | NLS | Microsoft | Microsoft National Language Support Format |
| 74 | NOT_TERMINATED | Apple, Inc. | Mac OS X Audit Log |
| 75 | OCX | Microsoft | ActiveX Control |
| 76 | OSAX | Apple | FindFile OSAX Mac Format Type |
| 77 | OSC | Microsoft Corporation | Remote Installation Services Client Installation Wizard Format |
| 78 | OSINSTALLMESSAGES | N/A | macOS system data |
| 79 | PCF | Valve | Valve Particle System Format |
| 80 | PF | Microsoft | Windows Prefetch Format |
| 81 | PID | N/A | Process ID Format |
| 82 | PMR | Avid Technology | Avid Persisent Media Record Format |
| 83 | PREFPANE | Apple | Mac OS X System Preference Pane |
| 84 | PXE | Various Linux developers | Linux, Unix Network Bootable |
| 85 | QFILTER | Apple, Inc. | Mac OS X ColorSync Filter |
| 86 | QLGENERATOR | Apple | Quick Look Generator Format |
| 87 | QTZ | Apple | Quartz Composer Format |
| 88 | REG | Microsoft | Registry Format |
| 89 | REGTRANS-MS | Microsoft | Registry Transaction Log Format |
| 90 | ROM | N/A | N64 Game ROM Format |
| 91 | RSRC | Apple | Macintosh Resource Format |
| 92 | RTP | Microsoft | Microsoft Software Update Format |
| 93 | RWM | Microsoft Corporation | Windows Imaging Resource Only |
| 94 | RX | Microsoft Corporation | MS-DOS 7 |
| 95 | SAVEDSEARCH | Apple | Spotlight Saved Search |
| 96 | SCAP | N/A | EFI Firmware Format |
| 97 | SCR | Microsoft | Windows Screensaver |
| 98 | SEARCHINDEXCACHE | Apple, Inc. | Mac OS X Cache |
| 99 | SERVICE | Lennart Poettering and Kay Sievers | Mac OS X Service Application |
| 100 | SFCACHE | Microsoft | ReadyBoost Cache Format |
| 101 | SFS | Squad | Squashfs Format Archive |
| 102 | SHA | The Open Group | Unix SHAR Archive |
| 103 | SHS | Microsoft | Microsoft Scrap Format |
| 104 | SHSH | Apple | IPhone/iPod Touch SHSH Blob Format |
| 105 | SIF | Microsoft | Windows Setup Information Format |
| 106 | SO | N/A | ELF Shared Library Format |
| 107 | SPARC | Skype | Skype Plugin Archive |
| 108 | STRINGS | Apple | Text Strings Format |
| 109 | SUPPORTED | Apple, Inc. | MAC OS X |
| 110 | SWP | Bill Joy | Vi Swap Format |
| 111 | SYS | Microsoft | Windows System Format |
| 112 | SYSTEM | The Vega Strike Team | Vega Strike Virtual System Format |
| 113 | TLB | Microsoft | OLE Type Library |
| 114 | UAQ | Microsoft Corporation | Microsoft Windows Action Queue |
| 115 | UCE | Microsoft | Windows UCE System Format |
| 116 | VGA | N/A | VGA Display Driver |
| 117 | VRS | Corel Corporation | Corel WordPerfect Video Resource Device Driver |
| 118 | VXD | N/A | Virtual Device Driver |
| 119 | WDF | Workshare | Workshare Compare DeltaFile |
| 120 | WPX | Adobe | Adobe Printer Description For Postscript Printing Format |
| 121 | WRS | Corel Corporation | Corel WordPerfect Windows Printer Driver |
| 122 | X86 | N/A | Linux Executable File |
| 123 | ~BT | N/A | Microsoft Windows update directory |
