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

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

A fault tolerant, protocol-agnostic RPC system

Snowflake is a network service for generating unique ID numbers at high scale with some simple guarantees.

Tiny Scala high-performance, async web framework, inspired by Sinatra

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

Fast, testable, Scala services built on TwitterServer and Finagle

A lightweight Web 3.0 framework for Scala, featuring a purely asynchronous architecture, extremely high-performance, massive scalability, high usability, and a functional, composable design.

Play2.x Authentication and Authorization module

Slick extensions for record lifecycle management