Finatra

　　Finatra是一款基于TwitterServer和Finagle的快速、可测试的Scala异步框架。Finatra is a fast, testable, Scala services built on TwitterServer and Finagle.

Play

　　Play是一款轻量级、无状态的WEB友好框架。使用Java和Scala可以很方便地创建web应用程序。Play is based on a lightweight, stateless, web-friendly architecture.Play Framework makes it easy to build web applications with Java & Scala.

Scalatra

　　Scalatra的是一款简单，方便和免费的web微架构。它结合JVM的力量和Scala的美丽和简洁，帮助您快速建立高性能的网站和API。Scalatra is a simple, accessible and free web micro-framework.It combines the power of the JVM with the beauty and brevity of Scala, helping you quickly build high-performance web sites and APIs.

spray

　　spray是一款开源的工具包，可以使用它构建基于Scala和Akka之上的REST/HTTP的整合层。
spray is an open-source toolkit for building REST/HTTP-based integration layers on top of Scala and Akka. Being asynchronous, actor-based, fast, lightweight, modular and testable it's a great way to connect your Scala applications to the world.