UNIX still trying to catch up with Xerox workstations in the REPL experience, or general Lisp machines for that matter.
Inline graphics from 1981,
https://youtu.be/o4-YnLpLgtk?t=376
Or TempleOS.
People joke about templeos a lot, but it had some really neat ideas (holy-c is a pretty nice language)
That was a work of art. Also Oberon.
>work of art
more like theopneustos