Scalatra is a free and open source web application framework written in Scala.

Scalatra is an alternative to the Lift, Play!, and Unfiltered frameworks.

Scalatra is an example of a microframework, a web software development framework which attempts to be as minimal as possible.

A full Scalatra application can be written in very few lines of code: From this tiny domain-specific language, Scalatra can be expanded into a minimal but full-featured model-view-controller web framework.

For example, additional libraries can be attached in order to provide templating, object-relational mapping, and unit testing or behaviour driven development support.