servant VS wai-conduit

Compare servant vs wai-conduit and see what are their differences.


Main repository for the servant libraries — DSL for describing, serving, querying, mocking, documenting web applications and more! (by haskell-servant)


Haskell Web Application Interface (by yesodweb)
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servant wai-conduit
15 10
1,736 790
0.3% 0.4%
7.1 0.0
3 days ago 19 days ago
Haskell Haskell
BSD 3-clause "New" or "Revised" License MIT License
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 servant. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-11-01.
  • Monthly Hask Anything (November 2022)
    3 projects | /r/haskell | 1 Nov 2022
    If you don't like this style, the usual alternative is to change mkDualAuthHandler to take two additional arguments, Proxy tag0 and Proxy tag1 (as e.g. lots of Servant functions do, for historical reasons).
  • How introduce `ResourceT` into my stack
    3 projects | /r/haskell | 14 Oct 2022
    Dunno if this is helpful, but I found this github issue about ResourceT and servant
  • Introduction to Doctests in Haskell
    6 projects | /r/haskell | 19 Apr 2022
    And what about the cabal repl --with-compiler=doctest, which was added recently, in doctest v0.20? I recently submitted a PR for Servant to use this in place of GHC environment files, because it seems less finicky to me. Was this a bad idea?
  • Generate Typescript from Servant API
    5 projects | /r/haskell | 15 Mar 2022
    I asked a somewhat relevant question recently. Maybe you'll find this discussion somewhat helpful:; two packages were talked about. One of the folks from Well Typed replied, and said they tried it recently (and worked fine).
  • Named Routes in Servant
    3 projects | /r/haskell | 9 Mar 2022
    Hey, is it possible this could solve the quadratic compile times issue for Servant routes? I was under the impression the slowdown was related to GHC being slow processing giant types, so maybe breaking the API down into records is just the thing...
    3 projects | /r/haskell | 9 Mar 2022
    You'll actually have to use the unreleased servant-auth-server from master (see here for details). I need to push a release :-)
    3 projects | /r/haskell | 9 Mar 2022
  • Why Do We Need Transpilation into JavaScript?
    6 projects | | 5 Apr 2021
    We use servant library that allows us to describe API at the type level and check during the compilation whether both the server handlers and the client functions use correct parameters of the required types and correspond to the current API version (if you forgot to change the client function at the frontend, it just won’t be built).
  • Saw a Tweet about Haskell+Servant being replaced with NodeJS in a project due to compile times - will compile times ever get better?
    2 projects | /r/haskell | 23 Feb 2021
    Since nobody has mentioned it yet, there is an outstanding issue about quadratic compile times in Servant.
  • Beginner friendly Haskell Open Source projects?
    4 projects | /r/haskell | 21 Jan 2021
    Web frameworks: Yesod, Scotty, Servant


Posts with mentions or reviews of wai-conduit. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-05.

What are some alternatives?

When comparing servant and wai-conduit you can also consider the following projects:

servant-ts - See the docs and live playground here

graphql - Haskell GraphQL implementation


swagger-petstore - swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.

gc-monitoring-wai - a wai application to show `GHC.Stats.GCStats`



attoparsec-conduit - A streaming data library

servant-github - servant types to access the GitHub API v3

tar-conduit - Conduit based tar extraction mechanism

open-browser - Haskell library for opening the web browser.

coffeescript - Unfancy JavaScript