[TUHS] Is there a good, even definitive, list of reimplementations of the Unix kernel? What would good cut-off criteria be?

[Al Kossow via TUHS]

On 4/19/26 7:41 AM, Arnold Robbins via TUHS wrote:
> Now that I think about it...  Long ago there was a version of Mach,
> maybe with a Linux API, running on top of, or instead of, macos 9 on
> the 68k macs...
> 
> Arnold
> 

Prime Time Freeware MK Linux
There was also a native Mach done in ATG