ormolu VS fourmolu

Compare ormolu vs fourmolu and see what are their differences.


A fourk of ormolu that uses four space indentation and allows arbitrary configuration. Don't like it? PRs welcome! (by parsonsmatt)
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ormolu fourmolu
7 17
918 330
0.4% 1.8%
8.0 8.9
15 days ago 14 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 ormolu. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-02-28.


Posts with mentions or reviews of fourmolu. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-04-12.

What are some alternatives?

When comparing ormolu and fourmolu you can also consider the following projects:

haskell-language-server - Official haskell ide support via language server (LSP). Successor of ghcide & haskell-ide-engine.

stack - The Haskell Tool Stack

brittany - haskell source code formatter


hlint - Haskell source code suggestions

haskell-lsp - Haskell library for the Microsoft Language Server Protocol

hadolint - Dockerfile linter, validate inline bash, written in Haskell

fugue - A recapitulated prelude with minimal dependencies and profligate exports.

fay - A proper subset of Haskell that compiles to JavaScript

normalize-imports - Sort and align Haskell import statements

niv - Easy dependency management for Nix projects