scalanlp/breeze

Breeze is a numerical processing library for Scala.

milessabin/shapeless

Generic programming for Scala

netflix/atlas

In-memory dimensional time series database.

chipsalliance/chisel

Chisel: A Modern Hardware Design Language

snowplow/snowplow

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

twitter/scalding

A Scala API for Cascading

chipsalliance/rocket-chip

Rocket Chip Generator

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

delta-io/delta

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs

scalatra/scalatra

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

com-lihaoyi/ammonite

Scala Scripting

http4s/http4s

A minimal, idiomatic Scala interface for HTTP

twitter/util

Wonderful reusable code from Twitter

circe/circe

Yet another JSON library for Scala

johnsnowlabs/spark-nlp

State of the Art Natural Language Processing

twitter-archive/diffy

Find potential bugs in your services with Diffy

typelevel/fs2

Compositional, streaming I/O library for Scala

lightbend/config

configuration library for JVM languages using HOCON files

twitter/algebird

Abstract Algebra for Scala