| 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 |
|---|---|---|---|
| .JAV | Oracle Corporation | Developer Files | Java Source Code |
| .MAC | Apple | Raster Image Files | MacPaint Image |
| .OSX | Apple | Executable Files | PowerPC Executable File |
| .3GA | Open Source | Audio Files | 3GPP Audio File |
| .PJP | Joint Photographic Experts Group | Raster Image Files | JPEG Image |
| .A2 | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .DSK | Power Software Ltd | Disk Image Files | General Disk Image |
| .RAF | Fuji Xerox | Camera Raw Files | Fuji RAW Image File |
| .PP | Geckonization | Data Files | Pocket Physics Sketch File |
| .TRUETYPE | Apple | Data Files | Golden Orchard Apple II CD Rom File |
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