1. velocity:Accelerated JavaScript animation.
  2. tween.js:Javascript tweening engine
  3. animejs:Anime.js (/ˈæn.ə.meɪ/) is a lightweight JavaScript animation library with a simple, yet powerful API.It works with CSS properties, SVG, DOM attributes and JavaScript Objects.
  4. direction-reveal: Direction aware content reveals via hover or tab on an element.