OpenEar is built on tone.js: https://github.com/ShacharHarshuv/open-ear

limut implements WebAudio and WebGL, and FoxDot-like patterns and samples: https://github.com/sdclibbery/limut

https://glicol.org/ runs in a browser and as a VST plugin

https://draw.audio/

"Using the Web Audio API to Make a Modem" (2017) https://news.ycombinator.com/item?id=15471723

gh topics/webaudio: https://github.com/topics/webaudio

awesome-webaudio: https://github.com/notthetup/awesome-webaudio