Publisher's description - MIDI Thru 1.0
Light menu bar app which simply links all MIDI inputs with all MIDI outputs connected to your Mac. Very useful when you just want to play your MIDI keyboards with your MIDI modules.
◦ Supports "Start on Login"
◦ "All Notes Off" signal can be sent from the menu
◦ You can turn on / off MIDI-Thru whenever you want