Rast Sound released Mad Filter , a new free go to filter to add movement and character.

Analog-like Filter & Drive Circuits
Mad Filter comes with state-of-the-art drive and filter circuits, they sound warm, analog-like and rich. This character and the drive function is at the center of our plugins final sound.

One-of-a-kind Filter Type Transition
You can transition between different filter types (lpass, hpass, bpass, notch) to create unique movements. Mixing filter types in such a way is only available through Mad Filter.

Complex LFO Motion & Mad States for Playful Randomness
You can click small circles on top of each knob to trigger natural, complex LFO movements and further add playful randomisation with 2 level ‘Go Mad’ button.

More info and free download here: Rast Sound | Mad Filter