PUBLIC MARKS with tags ajax & asp.net

Web.UI combines ComponentArt's unique rendering technology with the power of AJAX to deliver the most advanced set of user interface controls available for ASP.NET.

With the upcoming release of ASP.NET V2.0, however, Microsoft focused on useability. This is evident when implementing common tasks and more complex technologies. In fact, ASP.NET V2.0 contains out-of-the-box support for asynchronous client script callbacks and provides a fairly simple way to register the callback methods, invoke them, and handle any associated errors.

Open Source Draggable ASP.NET Controls

Anthem.NET is a free, cross-browser AJAX toolkit for the ASP.NET development environment that works with both ASP.NET 1.1 and 2.0.