Animatelo
Animatelo is a bunch of cool, fun, and cross-browser animations for you to use in your projects. This is a porting to Web Animation API of the fabulous animate.css project.
Caat
Canvas Advanced Animation Toolkit
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!
Odometer
Smoothly transitions numbers with ease. #hubspot-open-source
Zenscroll
A JavaScript module to smooth-scroll web pages and other scrollable elements
Flippant.js
A mini dependancy-less UI lib for flipping over DOM nodes.
Boron
A collection of dialog animations with React.js
Sly
JavaScript library for one-directional scrolling with item based navigation support.
Barba.js
Create badass, fluid and smooth transition between your website's pages.
Scroll Trigger
Triggers classes on html elements based on the scroll position. Uses requestAnimationFrame so it doesn't jack the users scroll.
Cta.js
Animate your 'action-to-effect' paths
Velocity
Accelerated JavaScript animation.
Transformicons
Transformicons: Animated icons, symbols and buttons using SVG and CSS. Inspired by the article from Sara Soueidan and the work of Bennett Feely.
Motus
Animation library that mimics CSS keyframes when scrolling.
Anima
CSS animations with a soul
Popmotion
A 12kb Javascript motion engine. Use for animation, physics and input tracking.
Elevator.js
Finally, a "back to top" button that behaves like a real elevator.