Straight from the developer's website: "Charlatan is a polyphonic, subtractive virtual analog (VA) synthesizer plugin with focus on sound quality and easy usability." There it is, pure and simple. You have 2 oscillators, hard sync, ring mod, unison, noise generator, LFO, a filter section with 4p/2p LP and BP, and 2 ADSR envelopes. All of this is in an easy to understand, easy to use, low CPU package. Leads, pads, sweeps, basses, you name it - you can create them all. So go get it.
Great little freeware, which have got 2 VCOs, a noise generator and an awesome filter. Easy on the CPU and has got a great sound. I mainly use it for leads and basses.