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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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MIDI Monitor User Discussion

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Madmacmad Member IconReview+120

.... awesome dude
thxxx for updating it !
i love it

Reply0 replies
Version 1.3
DirkTheMenace Member IconReview+104

As Sysex Lib - great little midi app.

Reply0 replies
Version 1.2.5
MadMacMad Member IconReview+120

Hey what should i say?
Many thxx for the update!
I still use this everything Day and it work's rock solid.
Respect :-)

Reply0 replies
Version 1.2.2
MadMacMad Member IconReview+120

another great one !!!!
thanxx Kurt for this great little tool !!!
with SysEx Librarian together ....what do you need more to handle your MIDI stuff .....

Reply0 replies
Version 1.2
user icon+34
Version 1.3
> 5 5


Current Version (1.x)


Downloads 12,796
Version Downloads 2,175
License Free
Date 04 Sep 2012
Platform Intel 64 / OS X / Intel 32
Price Free
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