Which software do you recommend for creating animated diagrams?

Cross posting from DevTalk.

Some days ago I came across a video teaching the internals of git. It had some nice diagrams and animations. The diagrams looked like hand-drawn. I could replicate those in Balsamiq, but those diagrams were animating also while I don’t know if Balsamiq can animate diagrams. I also know about Draw.io, but again I don’t know if diagrams in Draw.io can be animated or not. Is there some software for creating animated diagrams. Better if it’s free. Thank you!