Scala Reactive Web Frameworks

Open-source Scala projects categorized as Reactive Web Frameworks

Top 8 Scala Reactive Web Framework Projects

  • Binding.scala

    Reactive data-binding for Scala

  • Laminar

    Simple, expressive, and safe UI library for Scala.js (by raquo)

    Project mention: Ask HN: Those making $500/month on side projects in 2024 – Show and tell | | 2024-01-23

    My quite niche open source project broke this threshold last year, via Github sponsorships. Of course, I put a lot of time into it, so it's not "passive income" or even "market rate income", but still, without these sponsorships I wouldn't be able to work on it so much.

    The project is Laminar, a UI library for Scala.js

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  • OutWatch

    The Functional and Reactive Web-Frontend Library for Scala.js

    Project mention: What does the future look like? | /r/scala | 2023-05-01

    What I wrote is obviously based on my experience as backend and data engineer. I'm so happy to see an adoption on the Frontend side (with things like Tyrian or OutWatch) and would be even happier if there was a clean path to Android. Out of curiosity, what do you find appealing in Scala, compared to e.g. Kotlin?

  • Udash

    Scala framework for building beautiful and maintainable web applications.

  • kyo

    Toolkit for Scala Development

  • tyrian

    Elm-inspired Scala UI library.

    Project mention: At long last.. Tyrian (0.7.0) get's frontend routing! | /r/scala | 2023-05-20
  • calico

    Calico is a UI library for the Typelevel.js ecosystem. It leverages the abstractions provided by Cats Effect and FS2 to provide a fluent DSL for building web applications that are composable, reactive, and safe. If you enjoy working with Cats Effect and FS2 then I hope that you will like Calico as well. (by armanbilge)

  • Onboard AI

    ChatGPT with full context of any GitHub repo. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

  • Widok

    Client-server skeleton (by widok)

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 2024-01-23.

Scala Reactive Web Frameworks related posts


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

Project Stars
1 Binding.scala 1,584
2 Laminar 698
3 OutWatch 455
4 Udash 444
5 kyo 352
6 tyrian 287
7 calico 90
8 Widok 10
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