milessabin/shapeless

Generic programming for Scala

netflix/atlas

In-memory dimensional time series database.

twitter/scalding

A Scala API for Cascading

snowplow/snowplow

The enterprise-grade behavioral data engine (web, mobile, server-side, webhooks), running cloud-natively on AWS and GCP

chipsalliance/chisel

Chisel: A Modern Hardware Design Language

microsoft/synapseml

Simple and Distributed Machine Learning

spark-jobserver/spark-jobserver

REST job server for Apache Spark

slick/slick

Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala

scalatra/scalatra

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

com-lihaoyi/ammonite

Scala Scripting

twitter/util

Wonderful reusable code from Twitter

circe/circe

Yet another JSON library for Scala

twitter-archive/diffy

Find potential bugs in your services with Diffy

typelevel/fs2

Compositional, streaming I/O library for Scala

johnsnowlabs/spark-nlp

State of the Art Natural Language Processing

twitter/algebird

Abstract Algebra for Scala

salesforce/transmogrifai

TransmogrifAI (pronounced trăns-mŏgˈrə-fī) is an AutoML library for building modular, reusable, strongly typed machine learning workflows on Apache Spark with minimal hand-tuning

zio/zio-quill

Compile-time Language Integrated Queries for Scala

pocorall/scaloid

Scaloid makes your Android code easy to understand and maintain.

twitter/summingbird

Streaming MapReduce with Scalding and Storm