ZIO VS Scala.Rx

Compare ZIO vs Scala.Rx and see what are their differences.


An experimental library for Functional Reactive Programming in Scala (by lihaoyi)
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ZIO Scala.Rx
48 0
3,628 990
1.7% -
9.9 3.9
7 days ago 12 days ago
Scala Scala
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 ZIO. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-11-16.
  • 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 | reddit.com/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 | reddit.com/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.

  • Java 19 Is Out
    4 projects | news.ycombinator.com | 20 Sep 2022
    I would use Scala. I like FP and Scala comes with some awesome libraries for concurrent/async programming like Cats Effect or ZIO. Good choice for creating modern style micro-services to be run in the cloud (or even macro-services, Scala has a powerful module system, so it's made to handle large codebases).



    The language, the community and customs are great. You don't have to worry about nulls, things are immutable by default, domain modelling with ADTs and patter matching is pure joy.

    The tooling available is from good to great and Scala is big enough that there are good libraries for typical if not vast majority of stuff and Java libs as a reliable fallback.

  • Scala Isn't Fun Anymore
    9 projects | news.ycombinator.com | 13 Sep 2022
    I actually think Scala is in the best position it's ever been.

    There is a commitment to making the language simpler, easier and cleaner.

    On the backend, ZIO [1] is the best concurrency library on any platform. On the frontend you have really interesting Scala.js projects like Laminar [2].

    The biggest issue really is the tooling. SBT is simply awful.

    [1] https://zio.dev

  • A Python-compatible statically typed language erg-lang/erg
    27 projects | news.ycombinator.com | 13 Aug 2022
  • Ask HN: Any alternative to Java (OOP) which has the same ecosystem?
    5 projects | news.ycombinator.com | 11 Jul 2022
    Scala? With some help from additional libs such as Zio (https://zio.dev/) it allows you to write production quality programs like you would in Haskell on top of the JVM quite quickly...
  • Cats vs ZIO
    2 projects | reddit.com/r/scala | 10 Jul 2022
  • ZIO 2.0 Released
    2 projects | reddit.com/r/scala | 24 Jun 2022
    If you have experience using Future, and are looking for an introduction to "Why ZIO?", then you might enjoy my talk, Upgrade Your Future. The talk contains a bit of getting started material, and you can keep an eye on zio.dev for more tutorials geared at users of Future and Akka.


Posts with mentions or reviews of Scala.Rx. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning Scala.Rx yet.
Tracking mentions began in Dec 2020.

What are some alternatives?

When comparing ZIO and Scala.Rx you can also consider the following projects:

cats-effect - The pure asynchronous runtime for Scala

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

Http4s - A minimal, idiomatic Scala interface for HTTP

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

fs2-kafka - Functional Kafka Streams for Scala

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

Reactor-Scala-Extensions - A scala extension for Project Reactor's Flux and Mono

RxScala - RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences

Laminar - Simple, expressive, and safe UI library for Scala.js

scalajs-react - Facebook's React on Scala.JS