F2FM is a free software synthesizer developed by anosci. Available format(s): VST for Windows.
F2FM is an FM synth that places a filter before the modulator. It’s designed for bass sounds with interesting modulation options.
Features:
- 23 waveforms to select from.
- 2 operator oscillators with individual filters, which can be mixed before being sent to the modulator oscillator.
- Individual detune for all 3 oscilators.
- FM and PM mode.
- A comb filter for distortion.
http://anosci.net/vsts.html