A minimal, idiomatic Scala interface for HTTP (by http4s)

Http4s Alternatives

Similar projects and alternatives to Http4s

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better Http4s alternative or higher similarity.

Http4s reviews and mentions

Posts with mentions or reviews of Http4s. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-02.
  • How to get started?
    4 projects | /r/scala | 2 Jun 2023
    http4s is a Typelevel project, and therefore falls into the "program in Scala as if it were Haskell" category. Many people find this off-putting, but honestly, I think with the resources listed above, this is the option at the best intersection of "mature" and "well-documented" available in Scala. The reason it's off-putting to many people is that Haskell-style pure FP isn't mainstream, so it isn't so much a matter of learning a new technology as it is a matter of learning a new paradigm, which necessarily means surfacing and unlearning things you already know, and perhaps confronting the uncomfortable feeling that things you thought were "fundamental," "have to be that way," aren't, and don't. I personally found this process liberating. But not everyone does.
  • Server Stack Options for Scala
    4 projects | /r/scala | 13 Feb 2023
    If you want a mature REST API library, I recommend http4s. Be aware, though, that it’s based on purely-functional programming with Cats, cats-effect, and fs2, so if you’re not familiar with them or aren’t prepared to commit to the paradigm, the learning curve may be daunting, seem pointless, or both.
  • Sequential application of a constructor?
    2 projects | /r/scala | 21 Jan 2023
    See also cats-effect and fs2. cats-effect gives you your IO Monad (and IOApp to run it with on supported platforms). fs2 is the ecosystem’s streaming library, which is much more pervasive in functional Scala than in Haskell. For example, http4s and Doobie are both based on fs2.
  • Grasping the concepts and getting them down to earth
    4 projects | /r/scala | 4 Nov 2022
    Most important/known: * - an HTTP client/server * - streaming * - JDBC
  • Relative popularity of programming languages on Hacker News
    5 projects | | 13 Oct 2022
    Scala devs are too busy wondering about free monads and F[Request[F] => Response[F]]. I am very pleased by http4s, Doobie, ScalaJS, and the whole ecosystem, really:
  • http4s as a replacement for akka-http?
    6 projects | /r/scala | 15 Sep 2022
    In reality, your performance issues will not be http4s, but something else. That being said, there are improvements that http4s can and is making, and I'm quite excited about the future 1.0 release, which has some important and fundamental performance improvements already, like a a 125% performance improvement on the plaintext benchmark from - and finally, yes, akka-http does have very good performance, but you can also get good performance out of http4s.
  • Is Scala a good choice for a data intensive web backend?
    5 projects | /r/scala | 3 Sep 2022
    http4s for REST services.
  • Scala became Typelevel/Zio only ecosystem?
    4 projects | /r/scala | 6 Aug 2022
    This is a long list of misunderstandings I don’t have the patience to unpack. Instead, let me refer you to the links in my top comment in the thread, then suggest you learn at least http4s, a purely-functional web service library that’s been used in production for a decade or so now.
  • Pleasant to use Scala libraries
    5 projects | /r/scala | 6 Jul 2022
    The most popular nowadays are - I guess - akka-http and http4s. You can also use Play if you don't want to start from scratch but prefer a framework-based approach.
  • Why do all frameworks use OOP? (php)
    1 project | /r/learnprogramming | 11 Apr 2022
    There are functional frameworks:
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Basic Http4s repo stats
about 18 hours ago

http4s/http4s is an open source project licensed under Apache License 2.0 which is an OSI approved license.

The primary programming language of Http4s is Scala.

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