| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Code formatters | 7.8 (#5) | 7.6 (#11) |
| Spec score · Code Formatting Tools | 7.9 (#11) | 7.7 (#18) |
| Command line | The command line can format a single Elm file or all Elm files in a directory, and can overwrite files with the --yes option. | The program accepts configuration and input files, can write formatted output to a file or standard output, and can process multiple files. |
| Editor integrations | The README lists integrations for Atom, Light Table, Vim, Emacs, Visual Studio Code, Sublime Text, JetBrains IDEs, and TextMate. | The README links usage guidance for Vim and an Uncrustify plugin for IntelliJ. |
| License | The repository identifies its license as BSD-3-Clause. | The repository identifies its license as GPL-2.0. |
| Purpose | elm-format formats Elm source code according to rules based on the official Elm Style Guide. | Uncrustify is a source code beautifier for C, C++, C#, Objective-C, D, Java, Pawn and Vala. |