The programming language where object-oriented meets functional.

A Scalable language

Scala is an acronym for “Scalable Language”. This means that Scala grows with you. At the root, the language’s scalability is the result of a careful integration of object-oriented and functional language concepts.

Scala is the preferred workhorse language for many mission critical server systems. The generated code is on a par with Java’s and its precise typing means that many problems are caught at compile-time rather than after deployment.


Scala is a pure-bred object-oriented language. Conceptually, every value is an object and every operation is a method-call. The language supports advanced component architectures through classes and traits.


Even though its syntax is fairly conventional, Scala is also a full-blown functional language. It has everything you would expect, including first-class functions, a library with efficient immutable data structures, and a general preference of immutability over mutation.

Seamless Java Interop

Scala runs on the JVM. Java and Scala classes can be freely mixed, no matter whether they reside in different projects or in the same. They can even mutually refer to each other, the Scala compiler contains a subset of a Java compiler to make sense of such recursive dependencies.


Maybe most important is that programming in Scala tends to be very enjoyable. No boilerplate, rapid iteration, but at the same time the safety of a strong static type system. As Graham Tackley from the Guardian says: “We’ve found that Scala has enabled us to deliver things faster with less code. It’s reinvigorated the team.”

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Scala 2017 Projects

  • Dmitrii Petukhov
    Auto-completion and type information in Scastie
    Scastie is an online Scala programming environment which, unfortunately, does not provide such common features as automatic code completion and ad...
  • Vladimir Polushin
    Case classes a la carte with scala.meta
    case classes are a very useful feature of the scala language, but can be limiting. For example, there is no way to modify the internal representation...
  • Ilya Kirillov
    CBT IntelliJ IDEA‎ plugin
    Add an IntelliJ IDEA‎ support for the CBT by writing a plugin or extending an exciting Scala plugin.
  • Michael Viveros
    Connecting potential contributors with Scala projects via Scaladex
    This project's main goal is to make it easy for potential contributors to use Scaladex to find Scala projects they can work on. This will involve...
  • Valthor Halldorsson
    Enforcing type safety in Dottydoc code examples
    This project aims to extend the Dotty documentation compiler (alias "Dottydoc") to make code examples found in comments type safe, with the purpose...
  • Rémi Coudert
    Implementation of concurrent java library for Scala Native
    Scala Native is the a new Scala compiler under development. This compiler will permit Scala users to compile directly Scala code to binary and use...
  • Andrzej Sołtysik
    Reimplement the JDK in Scala Native
    Scala Native is a new target for Scala. It uses llvm to compile Scala to native assembly code, instead of compiling it to JVM bytecode. However, as...
  • Trevor Sibanda
    Slick bug and feature hunt
    This is a project to tackle as many issues as possible open in the Slick issue tracker with a priority on resolving long standing bugs and...