Soundtoys FilterFreak, Filter Plug-In (Download), Contains two effect filters with low, high and bandpass as well as band-stop filters, Two to eight poles each, FilterFreak 1 has a single filter, FilterFreak 2 offers two filters with serial or parallel connection, Extensive modulation options via LFO, Rhythm Mode, AR and ADSR Envelope, Random generator and step modulator, 7 Different saturation algorithms