Freeware - FKFX Influx VST Plugin

https://www.kvraudio.com/product/fkfx-influx-by-fkfx

FKFX Influx is an instant "Sonic Retox" engine. The resonator module (FLUX) goes thru a Low Pass and a Tube distortion. Flux resonator Note and Dry/Wet have their dedicated editors. FKFX Influx lets you create new grooves from your current input. Selecting "WET ONLY" will output only the transformed part of the signal.