I built a modern MIDI monitor & routing tool for macOS — looking for feedback

The Lounge General Discussion
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I’ve been making music on Mac for years and often ran into situations where I needed to see exactly what MIDI messages were flowing between apps and hardware. Most of the tools I tried felt pretty old, or they only handled monitoring without making routing easy.

A few months ago I started building something for my own workflow and it slowly turned into a proper tool.

Midilize lets you:

• see every MIDI message in real time
• route MIDI between apps and devices visually
• process messages using built-in tools or your own scripts

The idea is to have a modern place where you can monitor, debug, and manipulate MIDI signals without juggling multiple utilities.

It’s currently free while in beta and I’d really appreciate feedback from people running more complex MIDI setups.

If anyone is curious:

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Mate this looks the dogs bollocks!

This solves a lot of stuff for me!

Which version of Lua does it run?

Thanks for making this!

I run a pretty big setup, I’m currently rewiring it, but I’ll happily test/buy this when I’m up and running again!

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Thanks for the feedback!

Lua 5.4.7

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Wow, this looks incredible.

Weird timing too - just yesterday I wondering how I can make use of the routing on an old Emagic AMT8. Perfect

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Hope Midilize helps you :wink:

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When do you plan to move out of the beta phase? Keen to see pricing, like others not a big fan of subs but don’t mind paying semi-regular upgrade fees

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Don’t know yet but this will be a regular one time payment for a license, no subscription.

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This looks so helpful! I’ve always wanted something to provide a comprehensive overview of MIDI traffic in my system. Could save so much time in general troubleshooting, as well as designing more complex MIDI flows and scripts. Can’t wait to try it out.

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I wanted to share a video by Nay Seven, who’s doing some really impressive and creative work with Midilize :wink:

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