There's John earnest's oK on github (am on phone right now or I would link). It's a JavaScript implementation that runs everywhere.
K is not more polished, it is differently polished. It is much more minimal than J, which makes the syntax simpler and thus the shortest program is often longer and slower in K; however, in my experience typically the length and performance are on par.
K is not more polished, it is differently polished. It is much more minimal than J, which makes the syntax simpler and thus the shortest program is often longer and slower in K; however, in my experience typically the length and performance are on par.