U-he Podolski

Podolski is a simple, CPU-efficient virtual analogue synthesizer. Basically a cut down version of FilterscapeVA with just one oscillator, one filter, one envelope and two LFOs, it also features a Zebra-style arpeggiator/sequencer plus chorus and delay effects.
Podolski's specialities are the Click parameter (emphasizes the filter attack) and its ability to seamlessly morph between three waveforms (WaveWarp).
Podolski has been refurbished with some new presets by Howard Scarr, has undergone a GUI makeover (two new skins) and supports a wider range of plug-in formats.

http://www.u-he.com/cms/podolski