ZIO — A type-safe, composable library for async and concurrent programming in Scala (by zio)

ZIO Alternatives

Similar projects and alternatives to ZIO

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better ZIO alternative or higher similarity.

ZIO reviews and mentions

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 2023-07-11.
  • 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 | news.ycombinator.com | 14 Jun 2023
    Last but not least, Scala is currently the language with one of the best effect systems in my opinion (https://zio.dev/). Kotlin for example has copied the approach with https://arrow-kt.io/ 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: - https://dotty.epfl.ch/ - https://scala-native.org/en/stable/ - https://www.scala-js.org/ - https://typelevel.org/ - https://zio.dev/ - https://github.com/scala-native/scala-native/pull/3120 - https://github.com/lampepfl/dotty/pull/16517 - https://dotty.epfl.ch/docs/reference/experimental/index.html - https://scala-cli.virtuslab.org/ - https://scalameta.org/metals/ - https://docs.scala-lang.org/scala3/guides/migration/compatibility-intro.html - https://www.scala-lang.org/blog/2023/04/18/faster-scalajs-development-with-frontend-tooling.html - https://www.scala-lang.org/blog/2022/08/17/long-term-compatibility-plans.html
  • Is Parallel Programming Hard, and, If So, What Can You Do About It? [pdf]
    4 projects | news.ycombinator.com | 19 Feb 2023
    I use ZIO (http://zio.dev) 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’s so great about functional programming anyway?
    8 projects | news.ycombinator.com | 16 Nov 2022
    > It's a weakness of functional programming, not the language.

    I would strongly object this.

    Have you seen ZIO?


  • Switching career from F# to scala
    2 projects | /r/scala | 24 Oct 2022
    But overall, I'm happier with Scala. It has not one, but two lively FP communities. I recommend that you pick one of them: ZIO or TypeLevel (Cats Effect, fs2, http4s, ...). To some extent, you can mix TypeLevel libraries in ZIO projects.
  • New to Scala;
    8 projects | /r/scala | 14 Oct 2022
  • Next Steps for Rust in the Kernel
    8 projects | news.ycombinator.com | 21 Sep 2022
    I think "better Haskell on JVM" (in contrast to "worse Haskell") is a good identity for Scala to have. (Please note that this is an intentional hyperbole.)

    Of course, there are areas where Haskell is stronger than Scala (hint: modularity, crucial for good Software Engineering, is not one of them). And Scala has its own way of doing things, so just imitating Haskell won't work well.

    Examples of this "better Haskell" are https://typelevel.org/cats-effect/ and https://zio.dev/ .

    All together, Scala may be a better choice for you if you want to do Pure Functional Programming. And is definitely less risky (runs on JVM, Java libraries interop, IntelliJ, easy debugging, etc...).

    None of the other languages you mentioned are viable in this sense (if also you want a powerful type system, which rules out Clojure).

    I agree that Rust's identity is pretty clear: a modern language for use cases where only C or C++ could have been used before.

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    getonboard.dev | 1 Dec 2023
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Basic ZIO repo stats
3 days ago

zio/zio is an open source project licensed under Apache License 2.0 which is an OSI approved license.

The primary programming language of ZIO is Scala.

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