midi-monitor
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Description:
Display MIDI signals going in and out of your computer
Type: Cask  |  Latest Version: 1.5.4@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: midi audio developer-tools utility monitoring
Install: brew install --cask midi-monitor
About:
MIDI Monitor is a utility that captures and displays MIDI data streams flowing through your Mac. It allows you to inspect note on/off, control change, and other MIDI messages in real-time. This is essential for debugging hardware synthesizers, MIDI controllers, and software instrument connections.
Key Features:
  • Real-time MIDI message logging and display
  • Source and destination filtering
  • Support for System Exclusive (SysEx) messages
  • Hexadecimal and decimal data views
Use Cases:
  • Debugging connectivity issues with MIDI hardware
  • Monitoring and learning MIDI controller mappings
Alternatives:
  • MIDI Studio (macOS) – Built-in macOS utility; MIDI Monitor offers more detailed logging and filtering.
  • Pocket MIDI (Windows) – Windows-only alternative for basic MIDI monitoring.
Version History
Detected Version Rev Change Commit
Sep 15, 2025 12:27pm 1.5.4 0 VERSION_BUMP 274cf008