treehugger.scala is a library to code Scala programmatically.
Gigahorse is an HTTP client for Scala with multiple backend support.
a typeclass based JSON codec that's backend independent
sbt-inspectr is an sbt plugin for calling inspect recursively.
scalaxb is an XML data binding tool for Scala.
Power assertions (as known from Groovy and Spock) for the Scala language.
simple scala command line options parsing
an app to download Scala docs.