Telerik was probably the first company to offer components that supported ASP.NET MVC long before it was released. Even Scott Hanselman created some videos with Preview 2 of ASP.NET MVC and showed how to incorporate Telerik components instead of regular components.
Now, they have gone one step further. Telerik is presenting the first CTP of their Extensions for ASP.NET MVC.
This first CTP of the Telerik Extensions for ASP.NET MVC lays a foundation for the new UI extension framework, and offers a preview of its power by providing .NET wrappers for the following jQueryUI components:
The Accordion is a web control that allows you to provide multiple panes and display them one at a time. It is like having several collapsible panels where only one can be expanded at a time.
A highly configurable UI component that enables developers to quickly implement the most widely used date selection interface for web applications.
The jQueryUI progress bar allows you to display the progress of processes.
A flexible UI component that allows users to select a value from a defined range using a smooth or step-based slider.
Displays a message box that can contain text and symbols that inform and instruct the user.
Tabs are generally used to break content into multiple sections that can be swapped to save space, much like an accordion.
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One important aspect is the licensing:
Telerik Extensions for ASP.NET MVC will be offered under the Microsoft Public License (MS-PL), the OSI-approved license used in the distribution of the ASP.NET MVC framework. Under this license, developers can freely use and redistribute the Telerik ASP.NET MVC Extensions in all projects, both commercial and open source. A commercial license that includes support will also be available.
And you can find the source code on CodePlex here: http://telerikaspnetmvc.codeplex.com/