Ripchord
Ripchord is a simple MIDI plugin for creating and remixing chord progressions.
It lets you easily map multiple output notes to a given input note so that you can create your own custom chord mappings, and then experiment with the order and the rhythm of the chords by simply playing one note at time.
Ripchord is free and will always be free, and you can also download free presets from the community.
Visit: Ripchord