The Beryl XML GUI library was written to ease the development of
graphical user interfaces using Swing on Java. It lets you store user
interfaces as XML markup. This will help you avoid unnecessary
clutter in your source - Swing code mixed with application logic
can become a troublesome and hard to read mess as the application
size increases. The library comes with a visual component builder,
which makes development a breeze. The most important features are:

• It has a very easy syntax, makes designing a GUI as easy writing HTML


• Effectively removes all Swing UI construction code from your program,
  resulting in a much more readable, maintainable and smaller codebase.


• Comes with its own visual GUI builder
  (which, in turn, has been entirely written using the XML GUI)


• Almost all of the Swing widgets are supported


• Integrates with JavaHelp
• 
  
• Supports Drag'n'Drop with much less effort


• Builtin internationalization


• Uses caching for improved performance


• Widgets are self-configuring with default values


• Validators can be attached to widgets, common validators are supplied
  (Date, Number, Phone number, Email address ..)


• Spacings are automatically set to conform with the Java Look And Feel
  Design Guidelines


• Automatic "Group" layout for easy construction of simple dialogs


• Embraces the MVC design pattern


• Ready for J2EE client applications (For example you can automatically
  create a table row from a J2EE value object)


• Adds several much-needed custom swing components:
  JWizard, JIconView, JConsole, JOutlookBar and JHorizontalSeparator