Here's what Acrobatics Software has to say about Vento...
Vento is a high-structured 4 voices chorus which filters every voice with a different harmonic modulation, then the tremolo section gives additional shine and sculpting possibilities using the same voicing architecture. Every parameter is fully customizable with dedicated knobs for speed and separation of chorusing, giving maximum flexibility and dramatic, smooth changes to the signal, that varies from monophonic tube-flangers to incredibly rich and detailed stereo smearings.
Pricing and Availability:
Free download. Donations welcomed.