xRules is a OSC+MIDI rewriting utility for Renoise. It allows to transform, route and otherwise change incoming messages as they arrive. Although a very powerful tool, xRules has been designed with efficiency and ease of use in mind.
xRules support a wide variety of MIDI messages, including ones not recognized by Renoise itself. For example, you can receive 14-bit MIDI via multibyte CC messages, Pitch Bend or NRPN.