findify/scala-packed

Scala library for memory-efficient data structures

milessabin/export-hook

Minimal infrastructure for type class providers to support the inclusion of derived, subclass and other orphan instances in their implicit scope.

neotypes/neotypes

Scala lightweight, type-safe, asynchronous driver for neo4j

alexarchambault/data-class

case-classes with better binary compatibility story

scala-exercises/exercises-cats

Scala Exercises' lessons for the Cats library

zio/zio-json

Fast, secure JSON library with tight ZIO integration.

scalaz/scalaz-deriving

Principled, fast, typeclass derivation.

milessabin/macro-compat

macro-compat is a small library which allows you to compile macros with Scala 2.10.x which are written to the Scala 2.11/2 macro API.

oleg-py/meow-mtl

Next Level MTL for Scala

laserdisc-io/laserdisc

A Future-free Fs2 native pure FP Redis client

estatico/scala-newtype

NewTypes for Scala with no runtime overhead

denisftw/advanced-scala-code

Companion code for the Mastering Advanced Scala book https://leanpub.com/mastering-advanced-scala

knutwalker/typed-actors

compile-time typechecked akka actors

mfglabs/akka-stream-extensions

Extensions for Akka Stream

circe/circe-derivation

Fast type class instance derivation for Circe

sirthias/parboiled2

A macro-based PEG parser generator for Scala 2.10+

julianpeeters/sbt-avrohugger

sbt plugin for generating Scala sources for Apache Avro schemas and protocols.

typelevel/grackle

Grackle: Functional GraphQL for the Typelevel stack

sksamuel/avro4s

Avro schema generation and serialization / deserialization for Scala