I think the most famous was Borland Sidekick. I never had it myself but that was like the killer TSR app at least for 8086. Also there was a task swapper thing I had. I forget the name of it.
-MilesAhead
Sidekick was *really* useful in its day.
I still have a copy of Sidekick 98 on one of my machines.
As to the later, QEMM?
-cranioscopical
No I remember Qemm and Deskview. I think we messed around with a trail or demo and also QNix. But the one I'm talking about wasn't hi memory or expanded memory. It actually used the demand paged virtual memory supported in hardware on the 386. I think it went away after a short time. One of those things that was technically superior but didn't have the backing of some of the virtual memory products like VM86 or whatever it was. Maybe being 386 only killed it. At that time the people with money to spend had a Compaq DeskPro 286 and 386 systems were just coming in.