Google AJAX Libraries API

The AJAX Libraries API is a content distribution network and loading architecture for the most popular open source JavaScript libraries. By using the Google AJAX API Loader's google.load() method, the API provides your applications with stable, reliable, high speed, globally available access to all of the most popular, open source JavaScript libraries including: jQuery, jQuery UI, prototype, script.aculo.us, MooTools, dojo, SWFObject, Yahoo! User Interface Library (YUI), Ext Core and Chrome Frame. Google works directly with the key stake holders for each library effort and accept the latest stable versions as they are released.