GUI Toolkit for ASP.net

Question

Do anybody know any free Ajax-based Windowing toolkit for asp.net like Coolite Toolkit (which is a .net port of Ext-JS), and of course with extensive documentation?

Coolite Toolkit has an excellent library of Ajax controls. But lacks detailed documentation. So I am searching for a better option.

Answer 1

Perhaps you could check this out.

Telerik

Answer 2

jQuery UI works very well with ASP.NET. It has prebuilt controls that have many of the jQuery animations, can have themes applied to it, has a an extensive AJAX API built in and best of all it is free.