Ani X
Super easy and lightweight css animation library
TweenJs
A simple but powerful tweening / animation library for Javascript. Part of the CreateJS suite of libraries.
Superscrollorama
The jQuery plugin for supercool scroll animations
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.
Gfx
CSS3 3D animation library
Balloon.css
Simple tooltips made of pure CSS
Imagehover.css
A Scaleable & Light Image Hover CSS Library
Alice
AliceJS - (A Lightweight Independent CSS Engine) is a micro JavaScript library. For a demo, click the link below.
Lazy Line Painter
A jQuery plugin for SVG path animation
JS Movieclip
A javascript little framework to animate spritesheet as AS3 movieclip
Skrollr Decks
skrollr plugin for fullpage presentation decks
Dynamo.js
Creates dynamic bits of HTML to add some zest to your content
Apricot
A simple Hpricot Clone for nodejs.
Motio
Small JavaScript library for sprite based animations and panning.
Animo.js
A powerful little tool for managing CSS animations
Shine.js
A library for pretty shadows.
Engaged
Animated Social Menu Framework with magic