Mootube is a project mainly written in JAVASCRIPT and PHP, it's free.
Mootube is a class based plug-in for the MooTools framework that allows for easy embedding of YouTube videos.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">