[jonah]

Sadly, there's been a lot of that over the years - really neat and beautiful ideas which were either ahead of their time, or didn't quite find a use or market fit.

Separately, some various Kai Krause related links.

https://en.wikipedia.org/wiki/Kai_Krause

http://kai.sub.blue/en/

https://fr.ax/

https://www.theatlantic.com/past/docs/unbound/digicult/dc970... (Aside: it's kinda neat that this Atlantic archive from 1997 maintains a period-correct look.)

https://en.wikipedia.org/wiki/Bryce_(software)#/media/File:B... (An example of the kind of UI Meta software had.)