FeelYourSound released ChordPotion, a MIDI effect VST or AU plug-in.
The ChordPotion MIDI effect plug-in (VST + AU) is your quickest way to create powerful and impressive harmonic phrases within seconds.
Improve your songs and arrangements with authentic and professional patterns that react to your chords. You can mix and combine different playing styles with each other to create your own unique recipes.
More info here: FeelYourSound | ChordPotion