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Top 6 Scala Reactive Web Framework Projects
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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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)
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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).
Scala Reactive Web Frameworks discussion
Scala Reactive Web Frameworks related posts
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Coroutines and Effects
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Tyrian – The Elm Architecture for Scala.js
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The golden age of Kotlin and its uncertain future
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Why would users avoid a library that makes heavy use of macros in Scala 3?
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Is there any book or course about Scala front-end development?
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Designing an HTML Component system
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What does the future look like?
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Aug 2026
Index
What are some of the best open-source Reactive Web Framework projects in Scala? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Binding.scala | 1,574 |
| 2 | Laminar | 832 |
| 3 | OutWatch | 468 |
| 4 | Udash | 451 |
| 5 | calico | 137 |
| 6 | Widok | 10 |
Sponsored
Monitoring that respects your time & budget
APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
www.appsignal.com