Best server-side framework for heavy AJAX Java application

Question

There are zillions of Java web application frameworks.

95% were designed before the modern era of AJAX/DHTML-based development, and that means these new methods are

Answer 1

Aptana has a server side frame work called Jaxer. This is from their site:

Jaxer's core engine is based on the same Mozilla engine that you'll find in the popular Mozilla Firefox browser. This means that the execution environment you use on both the client and the server are the same. It's Ajax all the way through and through. That means you only need one set of languages -- the languages that are native to the browser -- to create entire applications.

This framework is open source and has a very nice IDE based on Eclipse. Aptana is also working on a Javascript implementation for ActiveRecord called ActiveRecordJS. Potentially you could use this both client and server side with their framework.