Scala http4s

Open-source Scala projects categorized as http4s | Edit details

Top 11 Scala http4 Projects

  • GitHub repo scala-pet-store

    An implementation of the java pet store using FP techniques in scala

    Project mention: Do you have someone experienced with Flutter and Scala? What is your stack, and what do you think about this? | | 2021-09-20
  • GitHub repo tapir

    Declarative, type-safe web endpoints library

    Project mention: STTP API - advice welcomed | | 2021-06-10

    I too recommend checking out Tapir to separate API definition from implementation. I am currently exploring Tapir specifically for consumer contract based testing of APIs. You can check out a Tapir based Work-In-Progress (WIP) project at

  • OPS

    OPS - Build and Run Open Source Unikernels. Quickly and easily build and deploy open source unikernels in tens of seconds. Deploy in any language to any cloud.

  • GitHub repo pfps-shopping-cart

    :shopping_cart: The Shopping Cart application developed in the book "Practical FP in Scala: A hands-on approach"

    Project mention: [Request] Practical FP in Scala: A hands-on approach by Gabriel Volpe | | 2021-12-15

    Looking for this book:

  • GitHub repo todo-http4s-doobie

    A sample project of a microservice using http4s, doobie, and circe.

    Project mention: Just can't grok Scala | | 2021-01-17

    My only point, really, was that it isn’t just libraries that use the features and idioms of, e.g. the Typelevel ecosystem. For example, here is a “ToDo” app written with http4s, Doobie, and Circe. It reads like Typelevel library code—that is, it uses Typelevel ecosystem features and idioms, and no one familiar with them will have any trouble reading or modifying it.

  • GitHub repo http4s-jwt-auth

    :lock: Opinionated JWT authentication library for Http4s

    Project mention: Since PlayFramework has stalled in development, any tips on migrating to akka-http? | | 2021-08-21

    Multiple libraries support JWT in http4s.

  • GitHub repo distage-example

    Example project built using distage, tagless final, http4s, doobie and zio

  • GitHub repo http4s-armeria

    Armeria backend for http4s

    Project mention: http4s-armeria is out with server and client support | | 2021-02-01

    http4s-armeria makes http4s services and clients decorated by Armeria's built-in decorators such as automatic retrying, rate-limiting, circuit Breaker, distributed tracing, and so on.

  • SonarQube

    Static code analysis for 29 languages.. Your projects are multi-language. So is SonarQube analysis. Find Bugs, Vulnerabilities, Security Hotspots, and Code Smells so you can release quality code every time. Get started analyzing your projects today for free.

  • GitHub repo http4s-micrometer-metrics

    Http4s metrics implementation based on Micrometer

    Project mention: Why Typelevel hates ZIO? | | 2021-07-06

    I know of and but we don't use Prometheus and want to have our business-specific metrics (so not only http), so neither of these libraries can help us. Metrics feel a bit like a blind spot in the TypeLevel community.

  • GitHub repo iron-cats-example

    An example project using Iron & Cats

    Project mention: Building a REST API in Scala 3 using Iron and Cats | | 2021-07-27

    We've seen in this tutorial the extreme readability of our small API offered by Iron and Cats can consult the code and test instructions of the finished example on

  • GitHub repo rad4s

    A set of utilities to speed up rendering, storage, testing, and prototyping, especially for http4s

    Project mention: Scala 3 N00b question - HTML table derivation | | 2021-05-17

    I had done this, have a look here (however it's Scala 2 only):

  • GitHub repo karma-plus-plus

    Project mention: karma++; | | 2021-03-21

    If you have any issues report, feature suggestions, please raise a ticket at

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 2021-12-15.

Scala http4s related posts


What are some of the best open-source http4 projects in Scala? This list will help you:

Project Stars
1 scala-pet-store 907
2 tapir 876
3 pfps-shopping-cart 348
4 todo-http4s-doobie 158
5 http4s-jwt-auth 83
6 distage-example 36
7 http4s-armeria 35
8 http4s-micrometer-metrics 14
9 iron-cats-example 5
10 rad4s 1
11 karma-plus-plus 0
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