Adoption of the Google Web Toolkit (GWT) Ajax framework has been slow. This piece on TSS may have some reasons. Why?

In part, GWT is essentially not open source. Features and applications of GWT are also apparently limited relative to other major Ajax frameworks that Java Web developers use: Prototype, Dojo, and DWR. For more on these and Java, check out the following Apress books:

• Pro JSF and Ajax – best seller!
• Pro Ajax and Java Frameworks
• Practical Ajax Projects with Java Technology
• Pro Apache Struts with Ajax

Find these here.

As a Java Web developer, which Ajax framework works best for you and why?