Equivocate is a new EQ plug in that can be used to reduce nasty fizzy, ringing frequencies and for a smoother guitar tone. It was previously released for free but a month ago was priced at $99. It is developed by Newfangled Audio and distributed by Eventide.
EQuivocate has up to 26 bands which makes it easier to isolate and notch out any annoying frequencies and use filter in mixing and mastering in your guitars.
Watch the demo here: https://reaperblog.net/2017/12/equivocate_guitars/