I am primarily a Linux guy, so I didn’t know about this until recently. Microsoft has released an AJAX toolkit.
ASP.NET AJAX is the free Microsoft AJAX framework for building highly interactive and responsive web applications that work across all popular browsers. The ASP.NET AJAX framework includes Server-Side ASP.NET AJAX, Client-Side ASP.NET AJAX, the AJAX Control Toolkit, and the jQuery library. ASP.NET AJAX enables developers to choose their preferred method of AJAX development, whether it is server-side programming, client-side programming, or a combination of both.
Those who are familiar with ASP.net and Microsoft’s Visual Studio should not have any trouble using the tools in ASP.net AJAX. The look and feel is similar to other Microsoft products. The toolkit also includes JQuery as part of the Microsoft ASP.NET MVC applications.
Microsoft has released a large number of tutorials that you can use to get started. They also have a video tutorials for those who would prefer that. You can download the Visual Web Developer Express directly from Microsoft for free.