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

A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

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

PredictionIO, a machine learning server for developers and ML engineers.

A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility

Principled Functional Programming in Scala

Find potential bugs in your services with Diffy

A Scala API for Cascading

In-memory dimensional time series database.

Breeze is/was a numerical processing library for Scala.

Reactive Microservices for the JVM

A Scala API for Apache Beam and Google Cloud Dataflow.

A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable

Abstract Algebra for Scala

Streaming MapReduce with Scalding and Storm

Scaloid makes your Android code easy to understand and maintain.

Scala GraphQL implementation

Asynchronous, Reactive Programming for Scala and Scala.js.

A Scala kernel for Jupyter

Scala combinator library for building Finagle HTTP services

The Scala HTTP client you always wanted!

GeoTrellis is a geographic data processing engine for high performance applications.

Integration of TensorFlow with other open-source frameworks

A load generator, built for engineers

A testing tool for Scala and Java developers

Cassovary is a simple big graph processing library for the JVM

RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences

A Thrift parser/generator

A simple library for creating complex neural networks