Shapeless VS ZIO

Compare Shapeless vs ZIO and see what are their differences.

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Shapeless ZIO
13 59
3,363 3,987
- 0.7%
7.5 9.5
5 days ago 5 days ago
Scala Scala
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of Shapeless. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-06.
  • Question regarding Recursive datatypes and cats typeclasses (Haskell to Scala)
    3 projects | /r/scala | 6 Jul 2023
    Scala 2-only: * Shapeless (there is Shapeless for Scala 3 but less often needed as basic things are in Scala 3)
  • Is there the equivalent of this in Scala ? (Maps to Struct)
    1 project | /r/scala | 27 Dec 2022
    This is the FromMap typeclass in Shapeless. Note that there’s a companion syntax package for it providing .toRecord for any Map and an appropriately-structured Record (and a Record is the LabelledGeneric representation of a case class).
  • Scala 3: modifying product types in compile-time
    1 project | /r/scala | 14 Jul 2022
    If that's what you want, you can use Shapeless' records and HList. You can probably replicate this in plain Scala 3 with tuples and literal types as you said. It won't play nice with your others libs though but maybe there are integrations.
  • Does Scala have support for Dependent types?
    1 project | /r/scala | 19 Jun 2022
    See the Shapeless Sized example.
  • How does Scala's type system compare to TypeScript's? Is it as powerful?
    1 project | /r/scala | 19 Jun 2022
    Shapeless has Sized:
  • Fp libraries that target scala 3 exclusively?
    5 projects | /r/scala | 22 Nov 2021
    I know that libraries like Scodec and shapeless were rewritten practically from scratch for Scala 3, taking advantage of the next syntax and internals, as well as protoquill - a Scala 3 implementation of Quill.
  • Delphi 11 Alexandria Has Been Released
    4 projects | /r/programming | 23 Sep 2021
    please show me something like this: or this: or this:
  • 6 Years of Professional Clojure
    6 projects | | 2 Aug 2021
    That largely depends on the type system. Languages like Haskell and Scala which have much more powerful type systems than C/Java/Go/etc absolutely do allow you to do those sorts of things. It is a bit harder to wrap your head around to be sure and there are some rough edges, but once you get the hang of it you can get the benefits of static typing with the flexibility of dynamic typing. See or a project that I've been working on a lot lately
  • Scala3: Does it provide a simplified way of doing n-term generic parameters?
    2 projects | /r/scala | 6 Jun 2021
    Just use cats and use the apply syntax .mapN for this. Seriously. There isn't a way to do it without generating source code that I can see in the api. Scala 3's HList Tuples aren't like Shapeless 2's HLists and I can't figure out a way in the api to reduce the tuple members down from (A, B, C, D) into an E, generically, yet with Scala 3 poly functions, unlike what you could do in Shapeless 2 with HList
  • Scala: A Love Story
    4 projects | | 21 Apr 2021
    Scala has sparked a huge ecosystem of very high quality libraries (Cats, Scalaz, shapeless, to name but a few). I think a major reason for this is that Scala attracts developers who value the advantages of the JVM, but are fed up with the limitations of the Java programming language and understand the benefits of an expressive type system and functional programming.


Posts with mentions or reviews of ZIO. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-01-11.
  • The golden age of Kotlin and its uncertain future
    4 projects | | 11 Jan 2024
  • I had a great experience with Scala and hopefully it will get more popular
    10 projects | /r/scala | 11 Jul 2023
    scala has 2 healthy and pretty complete lib ecosystems : check out typelevel and ZIO. Both are FP oriented, which might not be your cup of tea at first glance but I would encourage you to try em out ! Softest introduction would be to start with the typelevel cats library and build up from there. The excellent Scala with Cats will ease you softly into an FP mindset. It's a bit dated and for scala 2 only but translating to Scala 3 is a very good exercise if you feel so inclined !
  • Is it prudent to use Scala for anything new?
    2 projects | | 14 Jun 2023
    Last but not least, Scala is currently the language with one of the best effect systems in my opinion ( Kotlin for example has copied the approach with which I think is great actually. But when comparing Scala and Kotlin here, Scala wins by a large margin, it is a completely different world. It's like building a highly concurrent system in Erlang vs C.

    Of course, if you don't want to learn things like union types, traits/typeclasses and effects (similar to async/await but more powerful) you will be annoyed by Scala. But once you learned them, you can never go back.

  • How to get started?
    4 projects | /r/scala | 2 Jun 2023
  • Reconnecting with Scala. What's new?
    7 projects | /r/scala | 24 May 2023
    Links: - - - - - - - - - - - - -
  • Why actors are a great fit for a data processing pipeline and how we use them for Quickwit's engine
    1 project | /r/programming | 11 May 2023
    For the Rx approach, The ZIO framework for Scala has a streaming API that can meet those sorts of requirements. e.g.
  • How to build a Scala Zio CRUD Microservice
    1 project | /r/TheSampleApp | 19 Apr 2023
    This tutorial will introduce how to build from scratch, a REST microservice using the ZIO framework, and examples of ZIO dependency injection, ZIO HTTP, JSON, JDBC, and others from the ZIO environment. The source code is available here
  • Cuál lenguaje les da de comer, comunidad?
    1 project | /r/programacion | 12 Mar 2023
  • Is Parallel Programming Hard, and, If So, What Can You Do About It? [pdf]
    4 projects | | 19 Feb 2023
    I use ZIO ( for Scala which makes parallel programming trivial.

    Wraps different styles of asynchronicity e.g. callbacks, futures, fibers into one coherent model. And has excellent resource management so you can be sure that when you are forking a task that it will always clean up after itself.

    Have yet to see anything that comes close whilst still being practical i.e. you can leverage the very large ecosystem of Java libraries.

  • 40x Faster! We rewrote our project with Rust!
    5 projects | /r/rust | 30 Jan 2023
    The one advantage Rust has over Scala is that it detects data races at compile time, and that's a big time saver if you use low level thread synchronization. However, if you write pure FP code with ZIO or Cats Effect that's basically a non-issue anyway.

What are some alternatives?

When comparing Shapeless and ZIO you can also consider the following projects:

cats - Lightweight, modular, and extensible library for functional programming.

cats-effect - The pure asynchronous runtime for Scala

magnolia - Easy, fast, transparent generic derivation of typeclass instances

Monix - Asynchronous, Reactive Programming for Scala and Scala.js.

Monocle - Optics library for Scala

Http4s - A minimal, idiomatic Scala interface for HTTP

Scalaz - Principled Functional Programming in Scala

Vert.x - Vert.x is a tool-kit for building reactive applications on the JVM

Chimney - Scala library for boilerplate-free, type-safe data transformations

scala-newtype - NewTypes for Scala with no runtime overhead

fs2-kafka - Functional Kafka Streams for Scala