urbit-api VS three-layer

Compare urbit-api vs three-layer and see what are their differences.


talk to your urbit from haskell (by bsima)


:three: :cake: Architecture of the Haskell web applications (by Holmusk)
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urbit-api three-layer
0 4
8 291
- 0.0%
0.0 0.0
about 2 years ago almost 2 years 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 urbit-api. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning urbit-api yet.
Tracking mentions began in Dec 2020.


Posts with mentions or reviews of three-layer. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-12-13.
  • My Module Structure Does Not Feel Haskell-like
    2 projects | reddit.com/r/haskell | 13 Dec 2022
    I’m working on this pet project for a time now. Initially based on the three-layer repository, it’s now modelled after the Clean Architecture. In my understanding, it’s an OOP variation of the functional “Functional Core, Imperative Shell” approach. As most examples for Clean Architecture are written in C#, my module structure also looks more like a typical C# than Haskell one to me.
  • Advanced programming exercises/apps recommendations to code
    8 projects | reddit.com/r/haskell | 19 Jan 2022
    I personally use servant whenever i need networking. Altough scotty is easier/simpler, I would start with scotty. Aeson for JSON encoding/decoding. Actually! As i am writing this I would recommend a book (no its not a dry boring book, more of a tutorial) that implements a CI server from scratch. It’s vety descriptive and will show you the haskell ecosystem quite clearly: https://marcosampellegrini.com/simple-haskell-book. Seriously, it’s a damn good book and that’s how i learned haskell! Back to the libraries/ecosystem, if you want to learn how to use an app monad and mtl, these who come to mind: https://github.com/Holmusk/three-layer and https://www.parsonsmatt.org/2018/03/22/three_layer_haskell_cake.html. Under the github repo, check out the App folder to get a notion of how an app monad can be used. Personally I like mtl over monad transformers such as readerT. Best of luck!
  • Looking for opinionated webapp stack
    2 projects | reddit.com/r/Clojure | 27 Oct 2021
    I usually make web apps in haskell + react, when i started out learning haskell I found it invaluable to find a opinionated stack to learn about the ecosystem and to see "how to get things done". When i was learning haskell I really appreciated an example like: https://github.com/Holmusk/three-layer, essentially a "best practice" web app. Anyone in the clojure(script) community that can recommend some templates/examples to get to know the ecosystem? Since im comfortable with react im assuming clojurescript with re-frame/reagent makes sense for the frontend? So far i've only seen ring/jetty for the backend. To be clear, im not necessarily looking for the "simplest" frameworks but rather something that is highly reliable in production. The backend will expose simple JSON crud with some endpoints being quite computationally heavy (concurrency will be important).

What are some alternatives?

When comparing urbit-api and three-layer you can also consider the following projects:

cake-slayer - 🍰🔪 Architecture of Haskell backend applications

servant-py - Servant client generators for the Python language

postgrest - REST API for any Postgres database

servant-benchmark - Generate benchmark files from Servant APIs

chip8-book - An introduction to Chip-8 emulation using Rust

servant-swagger-tags - Swagger Tags for Servant

github-webhooks - Haskell types and instances for decoding GitHub webhook payloads.

reanimate - Haskell library for building declarative animations based on SVG graphics

urbit-hob - Haskell utilities for Hoon-style atom printing and conversion

luminus - documentation site for Luminus framework

servant-auth-cookie - Authentication via encrypted cookies

lox-haskell - Implementation of Lox language (from "Crafting Interpreters" book) in Haskell