Linplug FreeAlpha

Nice little freeware subtractive synth vsti for PC & Mac

The FreeAlpha features a subtractive design with special attention being paid to recreating the warmth and feel typically found in early-1980s analog synthesizers within the most modern music production environment.

up to 12 note polyphonic VST2.0 plugin software synthesizer (CPU dependent) for MAC and Windows PC

Unlimited number of presets (direct from disk)
2 oscillators with each 2 from 30 different waveforms; pitch, amplitude and symmetry modulation from LFO, Envelope or MIDI
Fat and rich-sounding Multimode filter; cutoff and resonance modulation from LFO, Envelope and MIDI
2 separate ADSFR envelopes for amplitude and cutoff, time ranges from super-fast 1 millisecond up to full 10 seconds
LFO with 6 waveforms, variable attack, variable temp sync
modulation matrix with 4 free assignable slots, 15 sources, 12 destinations
Adjustable Warmth (Precision)

Mono & polyphonic portamento/glide with Normal, Held and Auto-Bend mode
adjustable voice limit down to monophony
fully recognized velocity and aftertouch (mono and poly) and several controllers
LinPlug ECS for MIDI-CC assignment