[raffomania]

Most recently, he's actually rewriting all his tools in a forth-inspired language he's designed himself: https://wiki.xxiivv.com/site/uxn.html

[metasyn]

I made an online environment for UXN programming, assembling, and emulating the CLI environment using emscripten

https://metasyn.github.io/learn-uxn/

check it out if you're learning uxn or just want to try loading a rom and seeing the source or modifying it to learn