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

[Cameron Míċeál Tyre via TUHS]

That would not be a good place for someone to start a study of computing and, in particular, UNIX-like operating systems.

I'm quoting from page 3 of unigram.x, "The weekly information newsletter for the UNIX(R) community worldwide", Number 393 from July 13-17 1992.

"Tenon Intersystems Inc, the Santa Barbara, California-based Unix-on-Mac vendor has launched version 2.0 of MachTen, its software that puts the Mach operating system onto Apple Computers Inc’s Macintosh. Based on Berkeley BSD4.3 Unix and built on Carnegie Mellon Mach 3.0 foundation it supports all Macs from Powerbooks up and runs off-the-shelf Apple applications whilst simultaneously running Unix programs."

Specifically the "MachTen uses the Mach 3.0 microkernel" part. Confusing complete noobs aside, MachTen sound super cool. Another example of "I never knew about it at the time" I guess.

Have a great rest of the day, everyone,

Cameron


-------- Original Message --------
On Sunday, 04/19/26 at 16:44 Sevan Janiyan via TUHS <tuhs at tuhs.org> wrote:
On 19/04/2026 15:45, Al Kossow via TUHS wrote:
> There was also a native Mach done in ATG

any relation to MachTen?
https://en.wikipedia.org/wiki/MachTen


Sevan