PatchWorker (version 1.3.2)
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PatchWorker is a modular patch bay for MIDI systems to simplify the task of connecting your MIDI devices together. Instead of having to sort out which MIDI cable is connected to what unit in the tangle of cables behind your rack of MIDI modules, or remember which channel a module is receiving on, with PatchWorker, once you define all the units in your MIDI system in the palette on the left side, you can then select the ones you want to use from the palette and patch them together on the canvas on the right side. download PatchWorker
source code is available here