Anijs
Declarative handling library for CSS animations.
Real Shadow
Module that casts photorealistic shadows
Css3d Engine
css 3d light engine. very easy to use. 14k
Scroll Trigger
Triggers classes on html elements based on the scroll position. Uses requestAnimationFrame so it doesn't jack the users scroll.
Kute.js
KUTE.js is a native Javascript animation engine featuring badass performance, morphSVG, drawSVG, 2D and 3D transforms, SVG transforms, colors, as well as other CSS3 properties or presentation attributes.
Caat
Canvas Advanced Animation Toolkit
Rekapi
A keyframe animation library for JavaScript.
Barba.js
Create badass, fluid and smooth transition between your website's pages.
Move.js
CSS3 backed JavaScript animation framework
Laxxx
Simple & light weight (3kb minified & zipped) vanilla javascript plugin to create smooth & beautiful animations when you scrolllll! Harness the power of the most intuitive interaction and make your websites come alive!
Vivus
JavaScript library to make drawing animation on SVG
Pace
Automatically add a progress bar to your site. #hubspot-open-source
Jquery Transit
Super-smooth CSS3 transformations and transitions for jQuery
Victor
A JavaScript 2D vector class with methods for common vector operations
Skrollr Decks
skrollr plugin for fullpage presentation decks
Ani X
Super easy and lightweight css animation library