It's Motif on VMS, which is not remotely UNIX-like
eventually HPE got tired of dealing with VMS customer requests and sold the rights to VMS Software Inc, who ported it from Itanium to x86 as soon as humanly possible
now VMS Software Inc, is stating that they wish to support ye olde DECWindows and Motif on the modern, x86-enabled VMS
OpenVMS was UNIX-certified, so it's like UNIX enough to have the trademark.
Of course the UNIX stuff ran on top of the VMS stuff, and the early 1990s X11 stuff run on top of that. You can run CDE on Windows or Mac too, I don't see what's interesting about it.
That's a cruel alternate universe, I would've hoped that Motif being in use by more people than just the devs of one homebrew Unix desktop would mean that we wouldn't have suffered through that much versionitis.
The version number was just a joke. But if the "standard unix gui toolkit" was under an open source license back in the 1990s, I am sure people would have run with that rather than inventing something else.
from 1989 to 2005 everyone used more or less the same version (from 1989) because vendors and standards are painful
it wasn't like, meaningfully standardized. just no one ever updated anything. or set a meaningful version string. you just guessed which bugs were un-fixed based on `uname`
I basically meant that we could've avoided the (needless) versionitis of gtk, the toolkit once introduced to rewrite a Motif-based application. (Never understand why they did have to reinvent the Xt part, too, but, well…)
https://sourceforge.net/projects/motif/files/
https://en.wikipedia.org/wiki/Motif_%28software%29
(in some alternate universe, motif was under the x11 license and you would have motif v13 instead of GTK.)