WaveMaker

WaveMaker is Free Ajax development studio. It is a visual builder that has drag and drop features. It comes with another tool with rapid deployment feature called PushToDeploy. Here is the list of features from the site:

* Drag & Drop Assembly
* LiveLayout™
* Push to Deploy™: One-touch application deployment
* Visual Data Binding
* SOAP, REST and RSS web services
* Leverage existing CSS, HTML and Java
* Deploys a standard Java .war file
* Free