Scala JSON

Open-source Scala projects categorized as JSON

Top 23 Scala JSON Projects

  • Scalatra

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

    Project mention: Server Stack Options for Scala | /r/scala | 2023-02-13


  • circe

    Yet another JSON library for Scala

    Project mention: Database abstraction library which allows a clean domain model | /r/scala | 2023-01-20

    Using Circe so I define some classes that contain my custom Encoder[BusinessObject] in a file and I use that whenever I want to save/store a record, or handle a web request or respose. I also represent my mongo queries as JSON objects that I can freely build then pass to the driver.

  • InfluxDB

    Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.


    Scala combinator library for building Finagle HTTP services (by finagle)

  • json4s

    JSON library

    Project mention: Please try my JSON library | /r/scala | 2023-02-27

    In Scala we have Jackson, Json4s, Circe. Your api is incredibly similar to Json4s's one.

  • spray-json

    A lightweight, clean and simple JSON implementation in Scala

  • jsoniter-scala

    Scala macros for compile-time generation of safe and ultra-fast JSON codecs

    Project mention: The Newest Java Json Benchmark Results just dropped | /r/java | 2023-05-01

    Afaik dsl-json came up with a lot of improvements and inspired a several other libraries like JsonIter and jsonIter-scala. Jsoniter-scala by u/plokhotnyuk is probably the most optimized JSON library on the JVM at this point, and seems to power most of the Scala ecosystem. Some implementations/optimizations eventually made their way back into Jackson and other libraries.

  • Airframe

    Essential Building Blocks for Scala

  • Onboard AI

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  • akka-http-json

    Integrate some of the best JSON libs in Scala with Akka HTTP

  • argonaut

    Purely functional JSON parser and library in scala.

  • jackson-module-scala

    Add-on module for Jackson ( to support Scala-specific datatypes

    Project mention: Scala Custom JSON codec Help | /r/scala | 2023-06-05

    The other comment is asking the right questions. But also how is it failing? Do you have an error message? Is JsonUtil part of Jackson? Do you need to be using with an object mapper?

  • jawn

    Jawn is for parsing jay-sawn (JSON)

  • zio-json

    Fast, secure JSON library with tight ZIO integration.

  • Play JSON

    The Play JSON library

  • diffson

    A scala diff/patch library for Json

  • cornichon

    Testing tool in Scala for HTTP JSON API

  • borer

    Efficient CBOR and JSON (de)serialization in Scala

  • dijon

    A Dynamically Typed Scala Json Library

  • circe-yaml

    YAML parser for circe using SnakeYAML

  • fs2-data

    streaming data parsing and transformation library

  • scalajack

    Fast JSON parser/generator for Scala

  • Schemer

    Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API.

  • scala-jsonapi

    Scala support library for integrating the JSON API spec with Spray, Play! or Circe

  • scala-json

    Compile-time JSON marshaling and abstraction for Scala, Scala Native and Scala.js

  • SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-06-05.

Scala JSON related posts


What are some of the best open-source JSON projects in Scala? This list will help you:

Project Stars
1 Scalatra 2,622
2 circe 2,440
3 1,597
4 json4s 1,464
5 spray-json 973
6 jsoniter-scala 689
7 Airframe 615
8 akka-http-json 589
9 argonaut 546
10 jackson-module-scala 493
11 jawn 431
12 zio-json 389
13 Play JSON 347
14 diffson 296
15 cornichon 225
16 borer 208
17 dijon 180
18 circe-yaml 137
19 fs2-data 125
20 scalajack 111
21 Schemer 110
22 scala-jsonapi 108
23 scala-json 62
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives