AOS : Animate On Scroll Library.
Small library to animate elements on your page as you scroll.
Woah.css : CSS Animation Library for eccentric web developers.
Anime.js : Anime.js is a fast, multipurpose and lightweight JavaScript animation library with a simple, yet powerful API.
It works with CSS properties, SVG, DOM ...
Ink : A Responsive Email Framework from ZURB. Quickly create responsive HTML emails that work on any device & client. Even Outlook.
idiomatic-css : Principles of writing consistent, idiomatic CSS
Animate.css is a bunch of cool, fun, and cross-browser animations for you to use in your projects.