Original author here. Didn’t expect my little hobby project to land on the front page of Hacker News. In the midst of a complete rewrite of the language which I unfortunately only get to nibble at here and there; will hopefully publish it soon.
As a concatenative language lover/designer I just thought I'd put it out there how much of an inspiration Om has been to me, I absolutely adore your language! Om is one of the most beautiful programming languages I've ever seen, and surely one of the most unique too.
Most other concatenative languages are Joy/Factor-esque stack languages, so to see an entirely different vision with your prefix notation is an absolute delight . Your panmorphic type system is also genius (the only other language I know of that has something similar is TCL). The way you treat whitespace separators in your syntax is also very clever, I love that it basically enables one to encode strings without a dedicated literal syntax element.
Anyway, I just wanted to let you know how much I appreciate your design and implementation efforts. I hope your rewrite is going well, and I look very much forward to its eventual release...