Midilize
The MIDI router macOS should have built in
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Roy Antebi

Midilize - The MIDI router macOS should have built in

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Midilize is a visual MIDI router and monitor for macOS — watch notes, CCs, and SysEx flow in real time, build routing setups by connecting nodes on a canvas, and process signals with 40+ built-in tools. Or script your own in JavaScript or Lua.

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Roy Antebi
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Hey PH! I'm the maker of Midilize. I built this because debugging MIDI on Mac always felt like flying blind — you'd plug in a device, nothing works, and you have no idea why. No way to see what's actually being sent, no visual overview of how things are connected. Midilize fixes that. Every MIDI message is visible in real time. Every connection is a cable you can see and trace. If something's wrong, you'll spot it in seconds. It's free while in beta — would love your feedback on what to build next. Happy to answer any questions about MIDI or the app!