Top 17 Scala Fp Projects

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1. Shapeless

   1 15 3,399 7.4 Scala

   Generic programming for Scala

   

   Project mention: Three Stabs at a Typed Schema DSL in Kotlin | dev.to | 2026-05-12

   I built the N×M expansion with a KSP processor that generated a trait accessor per position-trait combo, and it compiled. But the abstraction leaked: every call site had to import the right extensions for the traits it read, the parameterized-instances pattern still had no clean read, and the whole thing felt like a hack. Languages with higher-kinded or dependent types make this natural (shapeless is the closest analogue on the JVM), but that's not exactly mainstream territory. Without those features you're encoding a record with positional bookkeeping. I cut it.

2. SaaSHub

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

   

3. FS2

   2 17 2,449 9.4 Scala

   Compositional, streaming I/O library for Scala

   

4. cats-effect

   3 36 2,233 8.4 Scala

   The pure asynchronous runtime for Scala

   

   Project mention: Cats-effect: I/O Integrated Runtime Concept | news.ycombinator.com | 2025-12-24

5. doobie

   4 12 2,226 9.1 Scala

   Functional JDBC layer for Scala.

   

6. Monix

   5 7 1,931 8.4 Scala

   Asynchronous, Reactive Programming for Scala and Scala.js.

   

7. scalajs-react

   6 13 1,658 9.0 Scala

   Facebook's React on Scala.JS

   

8. frameless

   7 9 897 7.9 Scala

   Expressive types for Spark.

   

9. trading

   8 14 662 0.0 Scala

   💱 Trading application written in Scala 3 that showcases an Event-Driven Architecture (EDA) and Functional Programming (FP)

   

10. pfps-shopping-cart

    9 35 551 0.0 Scala

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

    

11. pfps-examples

    10 1 196 0.0 Scala

    :izakaya_lantern: Standalone examples shown in the book "Practical FP in Scala: A hands-on approach"

    

12. scala-graal

    11 1 192 0.0 Scala

    Make usage of Graal features easy and safe from Scala. Also features Scala-based React SSR.

    

13. Nyaya

    12 0 188 0.0 Scala

    Random Data Generation and/or Property Testing in Scala & Scala.JS.

    

14. Scala Test-State

    13 1 144 0.0 Scala

    Scala Test-State.

    

15. calico

    14 0 138 8.1 Scala

    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)

    

16. laserdisc

    15 0 102 8.0 Scala

    A Future-free Fs2 native pure FP Redis client

    

17. distage-example

    16 2 59 5.8 Scala

    Example Scala application made with Izumi Project components: distage, LogStage, BIO and roles

    

18. pencil

    17 1 50 6.4 Scala

    Simple smtp client (by minosiants)

    

Scala Fp related posts

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  1 project | news.ycombinator.com | 24 Dec 2025

• Looking at A Monad Through An Example

  1 project | dev.to | 24 May 2024

• Scala real world projects

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• Udemy vs Rock the JVM for Cats, Cats Effect, and FS2

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• Functional Event-Driven Architecture: paper copies are now available!

  1 project | /r/scala | 12 Mar 2023
• A note from our sponsor - SaaSHub
  www.saashub.com | 17 Aug 2026

  SaaSHub helps you find the best software and product alternatives Learn more →

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