scalaxb is an XML data binding tool for Scala.
treehugger.scala is a library to code Scala programmatically.
Gigahorse is an HTTP client for Scala with multiple backend support.
Power assertions (as known from Groovy and Spock) for the Scala language.
Scala Verify is a minimal testing framework for Scala. Trust, but verify.
a typeclass based JSON codec that's backend independent
an experimental Scala extension of Jar Jar Links
an app to download Scala docs.
coursier sbt plugins