lihaoyi/autowire

Macros for simple/safe RPCs between Scala applications, including ScalaJS/ScalaJVM

tpolecat/atto

friendly little parsers

sbt/sbt-web

Library for building sbt plugins for the web

cakesolutions/scala-kafka-client

Scala helper modules for operating the Apache Kafka client library (0.9.x - 2.1.0)

purplekingdomgames/indigo

An FP game engine for Scala.

suzaku-io/boopickle

Binary serialization library for efficient network communication

stripe/rainier

Bayesian inference in Scala.

mrpowers/spark-fast-tests

Apache Spark testing helpers (dependency free & works with Scalatest, uTest, and MUnit)

iheartradio/play-swagger

Swagger spec generator for play framework

kaitai-io/kaitai_struct_compiler

Kaitai Struct: compiler to translate .ksy => .cpp / .cs / .dot / .go / .java / .js / .lua / .nim / .php / .pm / .py / .rb

findify/s3mock

Embedded S3 server for easy mocking

nvidia/spark-rapids

Spark RAPIDS plugin - accelerate Apache Spark with GPUs

ergoplatform/ergo

Ergo protocol description & reference client implementation

pawelkaczor/akka-ddd

Akka CQRS/ES framework

twitter/chill

Scala extensions for the Kryo serialization library

vlovgr/ciris

Functional Configurations for Scala

fun-cqrs/fun-cqrs

Fun.CQRS is a Scala CQRS/ES framework. It provides the basic blocks to build event driven aggregates with Event Sourcing.

codingwell/scala-guice

Scala extensions for Google Guice

microsoft/hyperspace

An open source indexing subsystem that brings index-based query acceleration to Apache Spark™ and big data workloads.

nrinaudo/kantan.csv

CSV handling library for Scala