Which software is this?

https://preview.redd.it/vc3tsvvicxih1.png?width=546&format=png&auto=webp&s=233aa7cdcac334923880673ee6add807dc95268f

Smii7y uses this software I believe to automate the animation for his avatar whenever he speaks in this Teo's Corydora challenge video. I want to know what it is.