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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 1.3.2:

Note: After you install the update, you may get an error message saying "There is an old version of MIDI Monitor's driver installed, but it could not be removed." Just quit the app, wait at least 10 seconds, and run it again. If that doesn't work, restart your computer and try again.

  • Fixed a bug: the spying MIDI driver


  • OS X 10.7 or later
  • MIDI hardware interface with OS X driver

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MIDI Monitor User Discussion

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Current Version (1.x)


Downloads 17,612
Version Downloads 4,373
License Free
Date 02 Sep 2014
Platform Intel 64 / OS X
Price Free
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