Windows PC 64 bits native formats: Stand Alone App, VST2 and VST3.
Wusik MIDI is a plugin/stand-alone application that let you transpose keys and change the MIDI channel in real-time. The upper and bottom keyboards are just to visualize the MIDI input and output. The middle keyboard is where you set things. Left-click on a note and you can add an option such as transpose, midi channel change, hold notes, panic and key switching. You can also set things from the Menu->Settings, instead of using keys to define things such as Transpose, MIDI Channel and Hold notes.
IMPORTANT: The plugin version will only work if your host allows MIDI Inputs/Outputs to be routed. Some hosts that ARE compatible: Studio One, FL Studio, Cubase, Ableton. And some that are NOT compatible: Maschine and Reason.
Multiple modes per key: transpose, midi channel change, hold notes, panic and key switching.
Full inline help with details on how to set up things;