http://www.synthtopia.com/content/2018/04/26/new-standalone-midi-event-processor-midihub/
Midihub is a new stand-alone MIDI event processor, router & MIDI interface, created by Blokas.
The device comes with its own dedicated software, Midihub Editor, that allows you
to program the Midihub to process MIDI messages in any way you want. For
example, you could split MIDImessages coming from your MIDI keyboard
by octaves to control two or more differentsynthesizers, to turn single
MIDI notes to fancy chords, or to send different divisions
of the main MIDI clock to separate devices.
While configuring the Midihub is done with an editor, once you’re done, the Midihub can be used standalone.
Midihub Editor works on Windows, MacOS, Linux & Raspbian.
Pricing and Availability
Midihub is currently in beta. Pricing and availability are to be announced. See the Blokas site for details.