BV Music has released BV31, a free VSTi synth for Windows.
Features: 3Osc, 3 Detuner, Filter, ADSR, Filter ADSRV, Mono switch, Lfo, Step Lfo, PM, Pre amp, Flangus, Delay and is very light on CPU (Processor).
Here are more Synths, VSTi's and Instruments.
"BV31. BLACKSNAKE" Via