not sure if this has been posted.........

I've used this before, pretty dope little synth



ASynth is a six voice virtual analog synthesizer featuring two oscillators and three circuit modelled filters.

Features:

6 Voice polyphony.
2x/4x/8x selectable oversampling.
MIDI CC automation.
Two oscillators:
Osc 1 with sawtooth and square waveforms.
Osc 2 with sawtooth and pulse waveforms.
Three circuit modelled filters:
MS20: 12 dB/oct lowpass filter with signal level dependent resonance.
Mini: 24 dB/oct lowpass filter from the 60's.
XPander: Multimode 24 dB/oct filter with 16 different responses.
Two ADSR envelopes (VCF and VCA).
One LFO with 6 waveforms.

"My interests lie in modeling analog electronics and especially the nonlinearities inherent in them. The focus is on sound quality, so don't complain if they use more cpu than your typical VST plugins. All of them use oversampling to avoid aliasing"

http://www.smartelectronix.com/refer.../ASynth101.zip

More plugins here
http://antti.smartelectronix.com/