sbt is an open source build tool for Scala and Java projects, similar to Java's Maven or Ant. Its main features are: * native support for compiling Scala code and integrating with many Scala test frameworks * build descriptions written in Scala using a DSL * dependency management using Ivy (which supports Maven-format repositories) * continuous compilation, testing, and deployment * integration with the Scala interpreter for rapid iteration and debugging * support for mixed Java/Scala projects