Harper is an English grammar checker designed to be just right. Harper takes advantage of decades of natural language research to analyze how exactly how your words come together. If something is off, Harper lets you know.
Most Harper users are catching their mistakes in Neovim, Obsidian , or Visual Studio Code.
Not only does it take milliseconds to lint a document, take less than 1/50th of LanguageTool’s memory footprint, but it is also completely private.
This is free and open source software.
Key Features
- Currently only supports American English but the core is extensible to support other languages.
- Small enough to load via WebAssembly.
- Supports a wide variety of programming languages
Website: github.com/Automattic/harper
Support:
Developer: Elijah Potter
License: Apache License 2.0
Harper is written in Rust. Learn Rust with our recommended free books and free tutorials.
Related Software
| Linters | |
|---|---|
| LanguageTool | Style and grammar checker for 30+ languages |
| Vale | Write with a consistent tone and style |
| ALE | Asynchronous Lint Engine |
| textlint | Pluggable linting tool for text and markdown |
| Harper | English grammar checker designed to be just right |
| proselint | As the name suggests, this is a linter for prose |
| alex | Catch insensitive, inconsiderate writing |
| write good | Linter for English prose |
| Eloquent | Works fully offline, powered by the LanguageTool standalone server |
| RedPen | Provides both a simple standalone command line tool and a server |
Read our verdict in the software roundup.
 Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |