From the announcement from October 2019: (I tried this out and it's too basic for what I need but it looks very promising. It's free to use but source doesn't seem to be available.)
Today, I’d like to present to you Zupiter, a browser-based web app I’ve working on in my spare time for the past 8 months. It’s a modular synthesizer that runs in a web browser. You can use it to build a custom synthesizer using a visual programming language inspired by Pure Data and Max/MSP.
(I tried this out and it's too basic for what I need but it looks very promising. It's free to use but source doesn't seem to be available.)
From the announcement from October 2019:
(I tried this out and it's too basic for what I need but it looks very promising. It's free to use but source doesn't seem to be available.)