A few days ago I noticed that commercial Smalltalk also still exists: https://www.cincom.com/us/smalltalk https://www.cincom.com/us/smalltalk By niche, I assu

A few days ago I noticed that commercial Smalltalk also still exists: https://www.cincom.com/us/smalltalk https://www.cincom.com/us/smalltalk By niche, I assume you mean niche interest rather than niche purpose. They're both general-purpose languages that are usable on the latest OSes, after all.