MacOS9 was the predecessor to MacOSX and is very different from a technical point of view. It is made by AppleCorporation.
MacOS9 is not a Unix, BSD or Linux based kernel. It is proprietory based software.
The kernel only allowed cooperative multitasking which is quite like Microsoft Windows 3.11. This means that tasks were not scheduled directly by a timer interrupt but by applications yielding. In layman's terms this means it crashed a lot and seemed unresponsive - quite like earlier Microsoft Windows as well.
Part of CategoryOperatingSystem
No other page links to MacOS9 yet.
