[leephillips]

Is the open source version (Kona) any good? Or do we have to go proprietary to try this out?

[ithkuil]

I had much fun learning the klong language: https://t3x.org/klong/

I even bought the well written book, which was a pleasure to read.

[RodgerTheGreat]

ngn-k is a different dialect from Kona, but actively-maintained and open source: https://codeberg.org/ngn/k

oK (which is also k6) can be tried here: http://johnearnest.github.io/ok/index.html