The emulator Shoebill can run A/UX https://github.com/pruten/Shoebill It’s pretty awesome. 3.0 is the last version that is stable(ish).  Naturally the MacOS installer won’t run so a bunch of Unix legwork is required. I’m not sure if this email will make the list but I’ll try.... Anyway the developer of Shoebill got snapped up by a certain fruit vendor so no updates... As for A/UX it’s SYSV with the c and fortran compilers built in.  Apparently it was going to be Steve’s “Big Mac” project that was sidelined after he was pushed out.  Although there is so many crazy rumours of that window at the end of Apple and the start of NeXT. On Sun, Jul 19, 2020 at 4:24 AM +0800, "Ed Carp" wrote: Oh, boy, now you've got me started. I worked on A/UX at Apple back around 1992. I'd love to find a copy of that! On 7/17/20, Michael Kjörling wrote: > Which, by the way, and also meeting your "25 years old or older" > criteria, looks like it would also include every version (with the > possible exception of the last version or so; that was 1995-1996) of > A/UX.