PitchSlap allows you to alter the pitch in a stereo manner; the left channel and right channel can be altered independently, or together using the center slider. Continuously automated pitch molestation is a cinch with the onboard modulators. You can create modulated delays to accent the pitchslapped material and make "experimental IDM" with a twist of just a few knobs, or with any of the 16 presets.

PitchSlap costs $10 and a demo version is available.