According to [1], WebMidi is supported on Chromium, but I never tested it. App uses feature detection (navigator.requestMIDIAccess), so if it's there, it should

According to [1], WebMidi is supported on Chromium, but I never tested it. App uses feature detection (navigator.requestMIDIAccess), so if it's there, it should work. No other Chrome-specific features are used, but without testing, it's hard to say for sure (e.g. video calls may, or may not, work on Firefox - there are slight differences in implementation of webRTC) [1] https://www.chromium.org/developers/design-documents/web-midi https://www.chromium.org/developers/design-documents/web-mid... Edit: sorry, ungoogled one explicitly mentions webRTC among the disabled features - though promises to make it configurable in the future. My apologies.