This looks ace.
Havent tried it yet as am at work.
http://klangformer.de/
Ninja!
24 voice polyphonic
8 part multi-timbral
8 stereo output channels
2 high quality anti-aliased oscillators
4 vario-edge wave forms and colour noise generator
Pulse width oscillator (step-less variable pulse width)
4 oscillation algorithms (stacked, hardsync, softsync, cross modulation)
Additional noise and ring modulator
6 diverse dynamic resonance filters with self oscillation
Modulation matrix
2 advanced tempo sync / free run LFO's with diverse waveforms
Routable 6 segment modulation envelope generator
MIDI controller implementation for all parameters
Or there is this
PhadiZ is a phase distortion synth (think Casio CZ101) with lots of stereo options including a unique panning/filter swoosh sound for great pads.
Features:
2 Oscillators.
6 Envelopes.
2 LFOs.
Delay and ring modulator
Or this
ARPocalypse is a 6 note, 8 step matrix pattern generator. Taking a MIDI input it outputs the notes of the chord in a rhythmic sequence defined by the user - with the output notes, velocity, gate time, swing and legato programmable for each step.
Just for fun