This reflects my assumptions more than anything else... my first impulse was to go look for the source, but it doesn't seem to be open-sourced either. (Of course, I shouldn't expect that.)

https://github.com/noiszy/noiszy There's no direct link to the source, but it's out there.... and very, very broken.

Hasn't been updated since 2017? :(

Seems like it got posted here in 2017 and no updates since then