Google Web Toolkit 1. download eclipse: http://www.eclipse.org/ 2. Google Web Toolkit Getting Started Guide http://code.google.com/webtoolkit/gettingstarted.html#NewEclipse 3. gwt-dnd Drag-and-Drop support for Google-Web-Toolkit (GWT) http://code.google.com/p/gwt-dnd/wiki/GettingStarted