midiO

If you're looking for a small and handy Audio Unit that can help you drive MIDI-based devices, MidiO might be the solution for you. It works perfectly with GarageBand and can be used to send the MIDI notes and other messages from a software instrument track to other MIDI-enabled programs or devices.

However, it's important to note that MidiO is not intended to be a general purpose, full functionality MIDI interface. It doesn't come with all the bells and whistles of other midi interfaces on the market.

But, for what it is, it has done its job well. MidiO is simple to use and it's straightforward with what it does - without any added complexity or confusion. If you're looking for a tool to help you send MIDI notes to specific devices or software, MidiO is a handy option to consider.

Furthermore, the only thing that some users may miss is the direct export of a MIDI track to a file since it is not supported by MidiO. However, all things considered, if you're looking for a simple and effective way to send MIDI notes from a software instrument track to other MIDI-enabled devices or programs, MidiO is definitely an efficient and reliable option to consider.