json4s/json4s

A single AST to be used by other scala json libraries

scalatra/scalatra

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

non/jawn

Jawn is for parsing jay-sawn (JSON)

playframework/play-json

The Play JSON library

finagle/finch

Scala combinator library for building Finagle HTTP services

spray/spray-json

A lightweight, clean and simple JSON implementation in Scala

gnieh/diffson

A scala diff/patch library for Json

julienrf/play-json-derived-codecs

skinny-framework/skinny-micro

:microphone: Micro Web framework to build Servlet applications in Scala, the core part of Skinny Framework 2

jto/validation

validation api extracted from play

ovotech/kafka-serialization

Lego bricks to build Apache Kafka serializers and deserializers

mdedetrich/scalajson

ScalaJSON - JSON for Scala, currently contains minimal AST

xuwei-k/httpz

purely functional http client with scalaz.Free

pathikrit/dijon

A Dynamically Typed Scala Json Library

agourlay/cornichon

Scala DSL for testing HTTP JSON API

outr/profig

Powerful configuration management for Scala (JSON, properties, command-line arguments, and environment variables)

sciss/play-json-sealed

Automatic sealed traits JSON format for play-json-alone

busymachines/busymachines-commons

Commons to help build HTTP web apps in a principled way

msgpack4z/msgpack4z-circe

msgpack4z circe binding / msgpack.org[Scala.js]

xuwei-k/pj

a pajama party for your json strings and streamers