Jumper Demo is a stand alone MIDI utility for windows computers, based on virtual MIDI cables method that allows live performers to play with up to 4 VST instruments opened in their DAW and switch between them straight from their physical MIDI keyboard in live conditions (jams, on stage, etc.).
Jumper can route any of its virtual MIDI CC buttons to any virtual MIDI cable and by that to switch between opened VST instruments instantly. It can also physically split the keyboard into 2 zones and route up to 2 instruments to the upper and the lower keyboard's zones.
Price: Free. It can be found in the Fanan team demo pack.