Non Daw. Its breaking up each function of the DAW into its own application gave a better experience in each of those functions, especially when you only needed that aspect, you were not working around everything else that the DAW offers. The integration between the various parts was not all that it could be but I think the idea has some real potential.
From what I remember; it was mostly a one man project and he was writing it for himself, this upset some people and they felt his personal project should be democratic. It created a great deal of drama and he found himself having to deal with the drama every time he tried to engage with the community. Eventually he just walked away from it all. The fork died shortly after since the people who forked it were still dependent on him for development, all they really offered was a fork that was free of his supposed tyranny.
Thought about Non immediately, but I figured it must have (had) about 2 other users amongst HNers, though. :) Nice to see it mentioned.
I used it quite a bit to produce radio shows for my country's public broadcasting. Because Non's line-oriented session format was so easy to parse with classic Unix tools, I wrote a bunch of scripts for it with Awk etc. (E.g. calculating the total length of clips highlighted with brown color in the DAW -- which was stuff meant for editing out; or creating a poor man's "ripple editing" feature by moving loosely-placed clips precisely side by side; or, eventually, converting the sessions to Samplitude EDL format, and, from there, to Pro Tools via AATranslator [1] (because our studio was using PT), etc. Really fun times!)
1: https://aatranslator.com.au/