On: By the Bluebook implementation of Smalltalk-80

[kryptiskt]

Dolphin Smalltalk is still being developed and is open source now: https://github.com/dolphinsmalltalk/Dolphin

[jecel → kryptiskt]

Right, Dolphin is still around. It seems that so is Smalltalk/X (which I used in the early 1990s), but there are now two versions:

https://www.exept.de/en/smalltalk-x.html

https://swing.fit.cvut.cz/projects/stx-jv

And I should have remembered Gemstone/S:

https://gemtalksystems.com/

Since I mentioned Little Smalltalk I should also have pointed out another educational system:

http://som-st.github.io/