I remember trying GEOS for IBM, still have a copy somewhere. It was very resource friendly (ran on a 8088?). I was far more impressed with its design philosophy than I was with Windows 3.x. Unfortunately, it was completely proprietary and difficult to get it to front the whole world of non-GEOS software.
Had the authors made it compatible with all existing software, computer history might be very different today.
So true, they where quite good with both multitasking and resource manegment, tho they 2001 release was to much for me

I could not get why they did that.