Between.js
Lightweight JavaScript (ES6) tweening engine
Jquery Transit
Super-smooth CSS3 transformations and transitions for jQuery
Animsition
A simple and easy jQuery plugin for CSS animated page transitions.
TweenJs
A simple but powerful tweening / animation library for Javascript. Part of the CreateJS suite of libraries.
Skrollr
Stand-alone parallax scrolling library for mobile (Android + iOS) and desktop. No jQuery. Just plain JavaScript (and some love).
Loaders.css
Delightful, performance-focused pure css loading animations.
Animate Transition
Library for transition animations between blocks (pages) in the application.
React Easy Flip
⚛ A React library for smooth FLIP animations. Easily animate originally unanimatable properties like DOM positions with one hook.
Odometer
Smoothly transitions numbers with ease. #hubspot-open-source
Zoomooz
An easy-to-use jQuery plugin for making zooming web pages.
Real Shadow
Module that casts photorealistic shadows
Tilt.js
A tiny 60+fps parallax tilt hover effect for jQuery.
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.
Frontity
» Frontity - The React Framework for WordPress
Caat
Canvas Advanced Animation Toolkit
Particles.js
A lightweight JavaScript library for creating particles
Boron
A collection of dialog animations with React.js