Alternatives to Fourmolu

Prettier

Prettier suits developers who want consistently formatted code in editors or automated command-line and CI workflows.

Biome

Biome suits teams working on web projects that want formatting, linting, and import organization in a single toolchain.

It suits developers who want configurable automatic formatting across one or more supported languages, through a command line or editor integration.

CSharpier

CSharpier suits developers who want consistent C# or XML formatting across projects, editors, and automated build workflows.

Fantomas

Fantomas is for F# developers who want configured formatting in local projects or automated checks.

rustfmt suits Rust developers who want consistent formatting in a crate or workspace, including teams that check formatting in CI.

Ruff

Ruff suits Python developers who want linting, formatting, and automatic fixes in one tool.

gofmt suits Go developers who want consistent source formatting from the command line or through documented editor and version-control integrations.

Ormolu suits Haskell developers who want a consistent formatter for local work, editor use, or continuous integration.

pgFormatter suits developers and database teams working with PostgreSQL or other SQL databases.

Scalafmt

Scalafmt suits Scala teams that want consistent formatting across editors, build tools or the command line.

Taplo suits developers and editors working with TOML who need validation, formatting, conversion, or value queries.

Spotless suits developers and teams that want formatting checks or automatic fixes integrated into their build tools or editors.