jsAnim was a clumbsy and poorly implemented library for adding mediocre animations to websites, sacrificing standards and accessibility.
Paper.js is a comprehensive open source vector graphics scripting framework and is largely compatible with Scriptographer, a scripting environment for Adobe Illustrator. It offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics.
Glimmer allows you to easily create interactive experiences like rotating photo-galleries/mastheads,drop-down navigation, hover effects, or custom animations. Glimmer also has an advanced mode, providing a design surface for creating jQuery effects based on your existing HTML and CSS.
Textillate.js is a simple plugin for CSS3 text animations. You just need to simply include textillate.js and it’s dependencies in your project to start creating unqiue effects.