ASP.NET AJAX
ASP.NET AJAX is a free framework for quickly creating efficient and interactive Web applications that work across all popular browsers. ASP.NET AJAX is built-into ASP.NET 3.5. It is also available as a separate download for ASP.NET 2.0. With ASP.NET AJAX you can: - Create next-generation interfaces with reusable AJAX components. - Enhance existing pages using powerful AJAX controls with support for all modern browsers. - Access remote services and data from the browser without tons of complicated script. - Take advantage of the improved efficiency and ease of use in Visual Studio 2008, with its built-in - - support for ASP.NET AJAX, improved JavaScript support, and a new Web page designer interface. See full details: http://www.asp.net/ajax/