Sprite.js
An efficient javascript sprite animation framework
Pace
Automatically add a progress bar to your site. #hubspot-open-source
Anijs
Declarative handling library for CSS animations.
Loaderz
:zap: A very easy-to-use, blazing fast asset-loader using promises. Support older-browsers and preload images, audios and videos.
Apricot
A simple Hpricot Clone for nodejs.
Magic
CSS3 Animations with special effects
Gfx
CSS3 3D animation library
Hover
A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS.
Jmpress.js
A jQuery plugin to build a website on the infinite canvas
Engaged
Animated Social Menu Framework with magic
Scroll Reveal.js
Declarative on-scroll reveal animations.
Green Sock Js
Public repository for GreenSock's JavaScript libraries like GSAP. See http://www.greensock.com
Balloon.css
Simple tooltips made of pure CSS
Angular Fx
Angular CSS3 animation directives (ngfx-bounce, ngfx-shake, ngfx-flip, ngfx-pulse and more ...) https://720kb.github.io/angular-fx
Skrollr
Stand-alone parallax scrolling library for mobile (Android + iOS) and desktop. No jQuery. Just plain JavaScript (and some love).
Vivus
JavaScript library to make drawing animation on SVG
Rellax
Lightweight, vanilla javascript parallax library