Novakill has released NitrousPM, a free virtual synthesizer for Windows.
NitrousPM is part of an ambitious planned trilogy of synths that will comine to form one all-powerful mega-synth.
According to NovaKill:
NitrousPM features a new oscillator that combines excellent sound quality with with phase modulation and hard sync, for a righ, civerse sonic palette. It has a new style of unison, offering single voice, 3 voice and 5 voice modes individually for each of the two oscillators. It is simple to use, but deceptively full-featured and very powerful.