The worm is the closest but really nothing that I know of. That pedal is a pain because of the power supply but it wouldn't sound like that without the extra juice.
I just got a Wiggler in a trade, and I'm pretty impressed. I like the trem settings, but the Wurl, Hamm and Looz settings. Yeah, it's big and has to have it's own power supply, but it gets some good sounds.