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

[John Cowan via TUHS]

On Sun, Apr 19, 2026 at 5:11 AM Arnold Robbins via TUHS <tuhs at tuhs.org> wrote:

>
> There was Tunis (I think) done at U. Toronto in Pascal or Modula or
> something.

Concurrent Euclid, which is also part of the Pascal family.

> IIRC both of those ran on the PDP-11. I had a book on Tunis but
> am not sure if I still have it.

Online athttps://archive.org/details/concurrenteuclid00holt.