Lollygag is the framework for building AJAX applications with the .NET Framework. It has a number of features that make it better than Microsoft Atlas. Read a detailed comparison.

Lollygag is a free framework for building "true" AJAX applications. You can take advantage of the Lollygag framework to build highly interactive, database-driven, Web applications.

Here are some of the key features of the Lollygag framework:

• Powerful Widget Framework
  The Lollygag framework includes a rich set of client-side widgets that you can use to display database data, perform form validation, and create rich animations. You declare widgets in a page in exactly the same way as you declare HTML tags.
• Autocomplete Support
  When you declare Lollygag widgets in a page, you get full autocomplete support while you type. To get autocomplete support, you must use an XML aware development environment such as Microsoft Visual Studio .NET.
• Declarative Database Access
  Accessing database data with the Lollygag framework is easy. You can bind client-side widgets directly to data exposed by a database or you can bind widgets to data exposed by a business object.
• Secure Form Validation
  When taking advantage of the Lollygag framework, you specify how a form field is validated only once. The validation is automatically applied on both the server and the client. Unlike other frameworks that only provide validation on the client, the Lollygag framework prevents malicious users from bypassing client-side validation and submitting data directly to the server.
• Rich Animation Framework
  Lollygag includes an entire animation framework. You can take advantage of animations to create different effects such as fades and wipes.
• Cross-Browser Support
  The full Lollygag framework works on the latest versions of Internet Explorer, Firefox, Safari, and Opera.
• Automatic JavaScript Compression
  The Lollygag framework compresses all JavaScript sent to the browser automatically. Any custom JavaScript code that you write as a developer is also compressed automatically.
• Powered by .NET
  The server-side portion of Lollygag is built on the Microsoft .NET 2.0 Framework. You can build server-side business objects using standard .NET languages such as C# and VB.NET. Lollygag client-side widgets can consume data exposed through server-side objects.
• Free
  The Lollygag framework is free. You can download the framework and start using it to build new applications right now.