What jQuery or CSS library/CDN is used to animate?

Greensock’s the standard, from what I’ve seen on Codepen, and it’s definitely a lot nicer to use than most of the other libraries. I used it in my portfolio project for some simple stuff, but I’ve seen people doing amazing things with it. The only issue is that some really neat stuff like SVG morphing is locked behind a paywall.

From what I’ve seen it uses CSS transforms to do most of the heavy animation work, but there’s obviously JS involved for calculating the transformation matrix and inserting the styles.