That's a list of libraries/DSLs for Scala that I'm interested in and want to try out in upcoming project.

• XScalaWT
  Provide a DSL for programming SWT Dialogs. Main benefit: strong Strong type checking. No need for additional tool/language
• Lift
  THE framework for web development with Scala. Book available:The Lift Book
• Scala Query
  Think of LINQ or "A Type-Safe Database Query DSL for Scala"
• ScalaCheck
  Port of QuickCheck for Haskell + additions.
• Scala Modules
  Aim to ease handling of OSGI in form of a DSL.