| File Extension: | HELP |
| File Type Description: | Mac OS X Help Book |
| File Type Developer: | Apple |
| Primary Associated Software: | macOS |
| Primary Software Developer: | Apple |
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Mac OS X Help Book files are the most popular type of files to carry the HELP file extension, originally developed by Apple for macOS. Commonly, Mac OS X Help Book files are found on user computers from United States, and on PCs running the Windows 10 operating system. A majority of people seeking info on HELP files are using the Google Chrome browser.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .JPEG | Joint Photographic Experts Group | Raster Image Files | JPEG Image |
| .TBZ2 | Winrar | Compressed Files | Tar BZip 2 Compressed File |
| .RTX | The Document Foundation | Text Files | Rich Text Document |
| .OGX | Xiph.Org | Video Files | Ogg Vorbis Multiplexed Media File |
| .LYT | Adminsoft | Data Files | Adminsoft Document Layout File |
| .HIGH | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .LOCALSTORAGE | Data Files | WebKit Local Storage Data File | |
| .TXE | Open Source | Text Files | Enriched Text File |
| .ORF | Olympus Corporation | Camera Raw Files | Olympus RAW File |
| .OSMALLER | Unknown Developer | Data Files | Unknown Apple II File. (found On Golden Orchard Apple II CD Rom) |
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*Files that are not supported can be opened in binary format.
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