Ajax.NET Professional

As always I'm late to the party, but I've finally got into some AJAX development. Since the project I'm working on is an ASP.NET 1.1 website, Atlas is no use to me, so I was pleased to find the free Ajax.NET toolkit. It makes development of AJAX based websites really simple. Add a line to web.config, add an attribute to a server-side method and then call it from client-side Javascript, it's that easy. The lovely thing about it is the way it copes with classes as well, my server-side method can return a class that can then be used in my client-side code. It may not actually be using magic but it sure feels like it.