History.js : History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for dat...
Able Player : Able Player is a fully accessible cross-browser media player. It uses the HTML5 or element for browsers that support them, and (optionally) the JW P...
flv.js : An HTML5 Flash Video (FLV) Player written in pure JavaScript without Flash. LONG LIVE FLV!
SoundManager 2 : Using HTML5 and Flash, SoundManager 2 provides reliable cross-platform audio under a single JavaScript API.
A game in the address bar using html5 history.replaceState
