The Google Plugin for Eclipse is the fastest way to start developing applications using the Google Web Toolkit and Google App Engine , allowing you to go in minutes from installing the plugin to deploying the Hello World Ajax application. Just install the plugin and get started. If you do not have GWT and / or the App Engine SDK is not installed, the plugin will take care of this for you.
New Application Wizard
Allows you to quickly create web applications that use GWT and / or App Engine, automatically configuring them.
Running applications
Run and debug your applications on the local machine using custom configurations.
Google App Engine Integration
Simple placement in App Engine.
Autovalidation ensures that your code is compatible with App Engine.
Creating projects without the need for ANT.
Google Web Toolkit integration
Inline JavaScript support (JSNI): syntax highlighting, etc.