Vaadin is a server-driven framework for building modern rich web applications in Java. It combines GWT client-side widgets to server-side component model to help developers to create web applications without learning JavaScript or HTML.

http://vaadin.com/

SmartGWT is a framework that allows you to not only utilize its comprehensive widget library for your application UI, but also tie these widgets in with your server-side for data management. SmartGWT is based on the powerful and mature SmartClient library. SmartGWT is licensed under standard LGPL terms. Read this blog post for a good introduction to SmartGWT : http://www.jroller.com/sjivan/entry/smartgwt_1_0_released

http://code.google.com/p/smartgwt/

Now develop real life enterprise app in minutes.. using high performance bound widgets and components. Developer preview expected mid July

http://www.enwelib.com

The Queplix QueWeb solution transforms legacy enterprise applications into flexible, Web-based applications that are less expensive to manage and easier to use. The transformed application can be published behind the firewall or hosted by cloud services providers such as Google AppEngine. By supporting flexible “hybrid cloud” strategies that securely span multiple locations, QueWeb delivers immediate ROI on critical applications while enabling longer-range cloud computing initiatives.

http://www.queplix.com/products/queweb-legacy-apps-in-cloud/

With thousands of users across various industries worldwide, Informer Web Reporting enables organizations to maximize performance and improve bottom lines by tracking, understanding, and managing information. Informer provides simultaneous access to real time operational data in multiple data sources from one intuitive interface anytime, anywhere, enabling organizations to extend reporting capabilities and make full use of their data.

http://www.entrinsik.com/informer