| 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 China, 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 |
|---|---|---|---|
| .PNG | The Pixelmator Team | Raster Image Files | Portable Network Graphics |
| .MCWORLD | Smith Micro Software | Game Files | Minecraft World Backup File |
| .RESCUE | Unknown Developer | Data Files | Unknown Apple II File. (found On Golden Orchard Apple II CD Rom) |
| .FLH | Apple | Video Files | FLIC Animation File |
| .8B | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .UW | Apple | Audio Files | Unsigned Word Audio File |
| .DFU | Apple | System Files | iOS DFU File |
| .ORF | Olympus Corporation | Camera Raw Files | Olympus RAW File |
| .NOW | The Document Foundation | Text Files | Readme Text Document File |
| .PKG | Apple | Compressed Files | Apple MacOS Installer Package |
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