Appleshare Pro 1.x is for A/UX 3, and not for any other MacOS. It looks and is set up and operates and so forth just like any other Appleshare software, but runs on Unix, and is therefore very robust.

Appleshare 3 was the "classic" version of networking software contemporaneous with Appleshare Pro 1.

Appleshare Server 1.x I have no experience of, but I gather that it runs on system 6 (or earlier?). There is some information on early Appleshare versions (if you dig around and under the lovely Japanese ladies) over at www.mac512.com