loli VS servant

Compare loli vs servant and see what are their differences.


By nfjinjing


Main repository for the servant libraries — DSL for describing, serving, querying, mocking, documenting web applications and more! (by haskell-servant)
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loli servant
0 16
30 1,760
- -0.1%
0.0 7.8
over 12 years ago 11 days ago
Haskell Haskell
BSD 3-clause "New" or "Revised" License BSD 3-clause "New" or "Revised" 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 loli. We have used some of these posts to build our list of alternatives and similar projects.

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


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 2023-10-07.
  • An alternative front end for Haskell?
    3 projects | | 7 Oct 2023
    > do you really have to understand language extensions?

    You do when your code doesn't compile and you're trying to figure out what the error message means, or when the library you want to use makes heavy use of it for even basic functionality.

    > These days one just enables GHC2021

    My experience was pre-GHC2021. I basically had to enable at a minimum 5-6 language extensions in every single file.

    > Mostly they're just about removing unnecessary restrictions from the older standard.

    Yeah, those ones are usually fine. I have zero objection to things like FlexibleInstances or DeriveFoldable.

    > Could you give an example?

    I believe I was trying to implement Central Authentication Service using Servant. However, that required returning a custom HTTP status code. There has been an open Github issue for this since 2017, but it seems to require basically rewriting the entire framework:

    Looking back at it now Servant does have "ServerError", but that basically requires giving up all the advantages Servant claims to have and I believe it was not a viable option at the time. Looking at the timeline I was probably also on Servant 0.15, and there seems to have been a rewrite since then.

    I vaguely recall running into a similar issue trying to interact with a database, but I can't remember the details of that.

  • 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.

What are some alternatives?

When comparing loli and servant you can also consider the following projects:

telegram-api - Telegram Bot API for Haskell

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`




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

keter - Web app deployment manager

coffeescript - Unfancy JavaScript

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