Another neat aspect of this machine was the hype around it at the time. AT&T took out ads in most magazines and pundits thought it would overtake the IBM PC because it ran UNIX and had some great software, including the first version of Microsoft Word (which was originally written for UNIX, specifically Microsoft's Xenix).
It's really a shame how little of that software has survived. I think I have a complete Foundation Set disk set, some others I wrote from ImageDisk images, and that's about it.
UNIX software in general seems pretty thin on the ground. The OSes are out there (even rarities like Interactive Unix 4.1 - though not the later patches e.g. FDISK 2GB) but software? Hen's teeth.
ACCELL Unify would be interesting to find, it's the software General Instrument used to write the front-end for their cable TV headends.
Ah, that's neat - it'd be nice to have it for SCO or Interactive Unix on x86. Especially Interactive, as that's the one I have to try and fix (Y2K20 issues).