CSharpier vs Ormolu

CSharpier is a free, open-source formatter for C# and XML. It parses source files and reprints them using its own formatting rules, with only a few basic options rather than a broad set of style switches. The homepage states support through C# version 14. Configuration can be kept in .csharpierrc JSON or YAML files or in .editorconfig, covering print width, tabs, indentation, and line endings. CSharpier runs as a .NET tool, installed for one project or globally, and CSharpier.Core provides a NuGet API for formatting from code. It can check files and returns a failing exit code by default when formatting is incorrect. Automation options include pre-commit hooks, MSBuild builds, and CI/CD workflows. Integrations are listed for Visual Studio 2022 and 2019, Visual Studio Code, Rider, Neovim, Emacs, and Zed. It runs on Windows, macOS, and Linux. Code that cannot compile produces error diagnostics instead of being formatted.

Ormolu is a formatter for Haskell source code. It uses GHC’s parser and applies one consistent style, with the aim of keeping diffs small. That style cannot be configured, and the project aims to leave code unchanged when it is formatted again after already meeting the style. Release binaries are available for Linux, macOS, and Windows; installation through cabal or stack is also supported. Ormolu Live provides a browser version. Listed editor integrations cover Emacs, VS Code, and Vim through neoformat or vim-ormolu, and Haskell Language Server has built-in support for Ormolu. For continuous integration, the project recommends the run-ormolu GitHub Action. It reads default language extensions and dependencies from a matching Cabal file;.ormolu files can specify fixity overrides and module re-export instructions. CPP support remains experimental and works only in simple cases where conditionals surround top-level declarations. Ormolu is open source and free, with a listed plan price of free.