Open Source Javascript Frameworks

jQuery is a new kind of JavaScript Library.

jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.

Prototype

Prototype is a JavaScript Framework that aims to ease development of dynamic web applications.

Featuring a unique, easy-to-use toolkit for class-driven development and the nicest Ajax library around, Prototype is quickly becoming the codebase of choice for web application developers everywhere.

MooTools

MooTools is a compact, modular, Object-Oriented JavaScript framework designed for the intermediate to advanced JavaScript developer. It allows you to write powerful, flexible, and cross-browser code with its elegant, well documented, and coherent API

EXTJS

Ext JS is a cross-browser JavaScript library for building rich internet applications.

• High performance, customizable UI widgets
• Well designed, documented and extensible Component model
• Commercial and Open Source licenses available

dojotoolkit

Like every Ajax toolkit, Dojo gives you a rich set of utilities for building responsive applications.

scriptaculous

script.aculo.us provides you with easy-to-use, cross-browser user interface JavaScript libraries to make
your web sites and web applications fly.

YUI Library

The YUI Library is a set of utilities and controls, written with JavaScript and CSS, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX. YUI is available under a BSD license and is free for all uses.

YUI is proven, scalable, fast, and robust. Built by frontend engineers at Yahoo! and contributors from around the world, it’s an industrial-strength JavaScript library for professionals who love JavaScript.