Found another by Ryukau - Singen0.1
This is equivalent to the SunVox “Fractal Bits” random percussion synth. Holy cow, endless FM percussion and its EDITABLE.
https://ryukau.github.io/Singen0.1/
There’s also ECAFM, a random Cellular Automata sound generator - very odd sounds, could be made into loops or for random one-off sounds. Pretty neat stuff!
https://ryukau.github.io/WebECAFM/
AND this one, a sine-chord generator with a couple’a other waveforms.