Hysteresis

If you want to create wild glitch-type effects then Glitchmachines should be your first stop. The company makes some incredible paid plug-ins but Hysteresis is one of its free offerings, combining a delay with a stutter module in an effect capable of making robotic timbres and wildly malfunctioning rhythmic patterns.

http://glitchmachines.com/downloads/hysteresis/