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MIDI Monitor is a utility for Mac OS X which displays MIDI signals in a variety of formats. It can watch both incoming and outgoing MIDI streams, and can filter them by message type and channel.

What's New

Version 1.3:
  • Fixed a bug: the "spying" driver wasn't being installed properly.
  • Added "expert mode" to display some messages more accurately (but more confusingly).
  • Added automatic updating via Sparkle.
  • Built for 32- and 64-bit. No more messages about the MIDI Server having to restart in 32-bit mode.
  • No longer works on PowerPC or 10.3 or 10.4, sorry. If more...


  • Mac OS X 10.5.8 or later
  • MIDI hardware interface with Mac OS X driver

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Current Version (1.x)


Downloads 12,854
Version Downloads 2,233
License Free
Date 04 Sep 2012
Platform Intel 64 / OS X / Intel 32
Price Free
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