ExtJS is a another JavaScript Library similar to Dojo and Rico, with an advantage of the design aspects and widgets that concentrate more on the UI, this library can be a designer’s favorite library.

The complete library with a whole lot of widgets after gzip can come down to 70KB, and is 136KB uncompressed. The library has its own forum and tutorials, and you too can post your tutorials on their site about Ext JS if you wish.

And still if you find tough to get through the tutorials, you have ScreenCasts to view and learn. Click here to view a demo of the UI components of Ext JS.

With ease of css styling, usability and its extensive list of UI components Ext JS can get designers too using such javascript frameworks…