Create impressive eye-popping animations in JavaScript with this collection of JavaScript Animation Frameworks. Animation was never this easy, these wonderful JavaScript animation frameworks are a must for every developer. Flood your designs with animations with great ease.
The Canvas 3D JS Libary (C3DL) is a JavaScript library that will make it easier to write 3D applications using WebGL. It provides a set of math, scene, and 3d object classes that makes WebGL more accessible for developers that want to develop 3D content in browser but do not want to have to deal in depth with the 3D math needed to make it work.

Script.aculo.us provides you with easy-to-use, cross-browser user interface JavaScript libraries to make your web sites and web applications fly.
Processing.js makes your data visualizations, digital art, interactive animations, educational graphs, video games, etc. work using web standards and without any plug-ins. You write code using the Processing language, include it in your web page, and Processing.js does the rest. It s not magic, but almost.
Paper.js is your Swiss Army Knife of Vector Graphics Scripting. An open source vector graphics scripting framework that runs on top of the HTML5 Canvas, it offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves, all neatly wrapped up in a well designed, consistent and clean programming interface. 
Transform.js is an extension over the basic functionality of css() and animate() methods. It helps create a wide range of animations using CSS3 properties.
jQuery Transit extends the functionality of jQuery animate and added CSS3 features such as rotate, skew, scale etc.