The JavaScript Framework Matrix website provides you an overview of popular JavaScript frameworks (jQuery, MooTools, The Dojo Toolkit, Prototype, Script.aculo.us, Ext.JS, Adobe Spry, BBC Glow, Yahoo UI! Library) and their functions.
JavaScript Framework Matrix demonstrates the different API styles and functionalities of the JavaScript libraries. You will also find various examples for each of the frameworks and every snippet contains links to the official documentation for further reference.
Developed by Matthias Schütz; You can access English version of the website here: http://matthiasschuetz.com/javascript-framework-matrix/en/
Greate link very useful to argument the choice of a Framwork in a project.
Thanks for sharing.