The Wikipedia article isn’t bad:
https://en.wikipedia.org/wiki/OpenServer

The only first hand info I can add is the money guy passed away a couple
years ago, which probably put things into limbo and I’m not sure who is at
the helm of Xinuos now.  When I last talked to their engineering director
they had non-trivial revenue supporting the old products, enough to run
several product development engineers apart from whatever else it took to
keep the lights on.

On Sat, Mar 20, 2021 at 7:38 PM Greg 'groggy' Lehey <grog@lemis.com> wrote:

> On Saturday, 20 March 2021 at 18:42:50 -0700, Kevin Bowling wrote:
> > SCO is still around in some form.  ...  They also shipped a version
> > of FreeBSD 10 commercially a handful of years ago.
>
> They did?  Do you have details?  From the version number it sounds as
> if it must have been at a time when most people already thought they
> were dead.
>
> Greg
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