milessabin/shapeless

Generic programming for Scala

netflix/atlas

In-memory dimensional time series database.

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

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

chipsalliance/rocket-chip

Rocket Chip Generator

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

johnsnowlabs/spark-nlp

State of the Art Natural Language Processing

http4s/http4s

A minimal, idiomatic Scala interface for HTTP

circe/circe

Yet another JSON library for Scala

twitter/util

Wonderful reusable code from Twitter

typelevel/fs2

Compositional, streaming I/O library for Scala

softwaremill/elasticmq

In-memory message queue with an Amazon SQS-compatible interface. Runs stand-alone or embedded.

twitter/algebird

Abstract Algebra for Scala

zio/zio-quill

Compile-time Language Integrated Queries for Scala

tpolecat/doobie

Functional JDBC layer for Scala.

apache/flink

Apache Flink

scalameta/metals

Scala language server with rich IDE features 🚀