Original author(s)Scalatra contributors
Initial releaseApril 11, 2009 (2009-04-11)
Stable release
2.8.1 / September 25, 2021; 19 months ago (2021-09-25)[1]
RepositoryScalatra Repository
Operating systemCross-platform
Available inScala
TypeWeb application framework

Scalatra is a free and open source web application framework written in Scala.[2] It is a port of the Sinatra framework written in Ruby. 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:


import org.scalatra._

class MyScalatraFilter extends ScalatraFilter {

  get("/hello/:name") {
    <h1>Hello, {params("name")}</h1>

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.

Software built with Scalatra


  1. ^ ((cite web)): Missing or empty |title= (help)
  2. ^ Synodinos, Dionysios G. (2010-10-07). "Scalatra: A Sinatra-like Web Framework for Scala". InfoQ.
  3. ^ "LinkedIn Signal - No Longer Supported". 2013-08-22.
  4. ^ Synodinos, Dionysios G. (2010-10-11). "LinkedIn Signal: A Case Study for Scala, JRuby and Voldemort". InfoQ.
  5. ^ "Github Scalatra OpenID Consumer code". GitHub. 9 May 2022.
  6. ^ "With GOV.UK, British government redefines the online government platform". O'Reilly. 2012-01-31. Retrieved 13 March 2012.