My biggest regret from all this was that Apple became the sole inheritor of the NeXT workstation vision.

I feel more now than ever that an Open Source OpenStep (OSOS?) could have been an epically productive relationship for the Mac and Linux communities.

GNUstep existes but it never really took off.

NextSpace is an attempt to build a full OS around GNUstep: https://github.com/trunkmaster/nextspace

The person behind it seems to still be plugging away. I’d love to see some real inertia behind this kind of effort.