Apache Spark - A unified analytics engine for large-scale data processing

Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3

Build highly concurrent, distributed, and resilient message-driven applications on the JVM

The Community Maintained High Velocity Web Framework For Java and Scala.

A fault tolerant, protocol-agnostic RPC system

Apache OpenWhisk is an open source serverless cloud platform

The Scala 3 compiler, also known as Dotty.

A machine learning package built for humans.

Principled Functional Programming in Scala

Scala.js, the Scala to JavaScript compiler

Your favorite language gets closer to bare metal.

Deploy and manage containers (including Docker) on top of Apache Mesos at scale.

Breeze is/was a numerical processing library for Scala.

A Scala API for Apache Beam and Google Cloud Dataflow.

Compositional, streaming I/O library for Scala

Abstract Algebra for Scala

Pure Scala Artifact Fetching

Scala GraphQL implementation

Asynchronous, Reactive Programming for Scala and Scala.js.

Powerful new number types and numeric abstractions for Scala.

Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

Distributed Tracing, Metrics and Context Propagation for applications running on the JVM

The Streaming-first HTTP server/module of Akka

Writing Fast Parsers Fast in Scala

Scala extensions for the Kryo serialization library

Scala reference (as seen by Java developer)

A Scala web server powered by Netty networking and AKKA processing.

Scalable Image Analysis and Shape Modelling

Learn Scala by examples

Add-ons to Akka Stream