Stochas

Stochas is an open-source advanced probabilistic polyrhythmic sequencer plugin. Stochas is at its core a step sequencer, which means it generates MIDI notes.

As such, it does not generate any sound of its own but can be used to sequence other plugins and/or hardware synthesizers. Although it can be used for basic step sequencing, its main function is to provide randomness to the step sequencing process.