Neuenberger have released an alpha version of their JellyFilter v2.0 freeware polyphonic lead synth for Windows.

Technical details:

• Polyphony / Timbrality: 4 voices per channel, 16 channels.
• Oscillators: 2 Oscillators with Controllable Unisono per Osc: Saw, Sine, Square, Pulse with PWM, Noise.
• Filter: 24dB LowPass and Bandpass with resonance, Highpass, envelope amount and cutoff, possibility for self-resonance (protect your ears)
• Envelopes: ADSR for the Amplifier section, ADSR for the Filter section.
• Effects: Portamento, Distortion, FM OSC 2-> OSC 1, Sync Osc 1 to Osc 2
• Modulation: Attack Decay Envelope: Either to FM amount or to OSC 2
• LFO: to OSC 1+2, to OSC 2, to Filter, to PW

via Sonic State