MIDI Polysher is a free VST plugin primarily designed for eaReckon BloXpander users (but it works with other compatible VST host software). BloXpander is now provided with its own full-featured MIDI filter and therefore, BloXpander users do not really need this plug-in anymore.
However, over the past few years, musicians have shown interest for this plug-in which can be used in other VST compatible DAWs.
This plug-in is a VST MIDI filter that offers the possibility to virtually split your master MIDI keyboard into multiple key and velocity zones.
It also features a transpose option, a MIDI channel filter and three global filters (CC, Pitch Bend and Aftertouch).
Please note that how easy (or even possible) it is to use MIDI Polysher highly depends on the host's MIDI routing capabilities.