The scala.swing package
This is a UI library that will wrap most of Java Swing for Scala in a straightforward manner.
The widget class hierarchy loosely resembles that of Java Swing.
The library comprises three main packages:
scala.swing
All widget classes and traits.
scala.swing.event
The event hierarchy.
scala.swing.test
A set of demos.
An incubator project can be found on http://github.com/ingoem/scala-swing.