The browser-based version of KeyKit should be usable, now, at least for people who have used KeyKit in the past. To run it, go to:
If you run a WebMIDI-receiving app like
https://midi.city/ in another tab of the browser, and set its input port appropriately, you should be able to use it for output. The Help button describes how to attach a local folder to edit and use local code (lib/*.k) and music (music/*.mid) files.
It's working pretty well, except for some graphical anomalies; XOR graphics don't work in a browser's canvas.
...Tim...