Lift (http://liftweb.net/ http://liftweb.net/) is the most widely adopted Scala web framework. Scalatra (https://github.com/scalatra/scalatra https://github.com

Lift (http://liftweb.net/ http://liftweb.net/) is the most widely adopted Scala web framework. Scalatra (https://github.com/scalatra/scalatra https://github.com/scalatra/scalatra) is another that is based on Ruby's Sinatra.