OpenXava

OpenXava is a full-stack framework for developing database-backed web applications, like Ruby on Rails, but OpenXava produces standard J2EE / JavaEE applications that can be deployed and any standard Java Application Server (or standard Java Portal).
The features that make OpenXava unique are:

• It's really, really rapid and easy to develop database-backed applications.
• It's Business Component Oriented instead of MVC (look at wikipedia). 
• Generates automatically the User Interface from the business component definitions.
  

• Spring Framework
• JBoss Seam
• Expresso - Web Application Development Framework.
• dinamica
• Nuxeo
• Bright Side Framework
• Jeenius
• jGuard
• Keel
• CUBA
• Jt - J2EE pattern oriented framework
• realMethods
• EJOSA - Enterprise Java Open Source Architecture
• karma