impress.js : It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com
cssQuery() : cssQuery() is a powerful cross-browser JavaScript function that enables querying of a DOM document using CSS selectors. All CSS1 and CSS2 selectors ar...
Photon : UI toolkit for building desktop apps with Electron.
Wave.js : Audio visualizer library for javascript. Create dynamic animations that react to an audio file or audio stream.
script.aculo.us : script.aculo.us provides you with
easy-to-use, cross-browser user
interface JavaScript libraries to make
your web sites and web applications fly.
Bespoke.js is a super minimal, modular presentation library for modern browsers, designed to foster a rich plugin ecosystem.