scala/scala-async

An asynchronous programming facility for Scala

scalatest/scalatest

A testing tool for Scala and Java developers

tumblr/colossus

I/O and Microservice library for Scala

scala-steward-org/scala-steward

:robot: A bot that helps you keep your projects up-to-date

lift/framework

Lift Framework

scalalandio/chimney

Scala library for boilerplate-free, type-safe data transformations

scalameta/scalameta

Library to read, analyze, transform and generate Scala programs

wartremover/wartremover

Flexible Scala code linting tool

akka/alpakka

Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

apache/incubator-streampark

Make stream processing easier! Easy-to-use streaming application development framework and operation platform.

outworkers/phantom

Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise

twitter/cassovary

Cassovary is a simple big graph processing library for the JVM

debasishg/scala-redis

A scala library for connecting to a redis server, or a cluster of redis nodes using consistent hashing on the client side.

lihaoyi/scala.rx

An experimental library for Functional Reactive Programming in Scala

apache/hudi

Upserts, Deletes And Incremental Processing on Big Data.

spray/spray-json

A lightweight, clean and simple JSON implementation in Scala

polynote/polynote

A better notebook for Scala (and more)

typelevel/simulacrum

First class syntax support for type classes in Scala

sscarduzio/elasticsearch-readonlyrest-plugin

Free Elasticsearch security plugin and Kibana security plugin: super-easy Kibana multi-tenancy, Encryption, Authentication, Authorization, Auditing

ghostdogpr/caliban

Functional GraphQL library for Scala