Privacy-oriented offline grammar checker
Harper offers an offline and privacy-oriented grammar checker developed with the Rust language. This open source tool aims to create a high-performance and safe alternative in text analysis processes.
Updates
- November 7, 2026: Stars 17,161 → 17,455, latest release v3.1.0 (November 6, 2026).
- October 27, 2026: Stars 16,582 → 17,161, latest release v3.0.0 (October 27, 2026).
- October 17, 2026: Stars 16,098 → 16,582, latest release v2.13.0 (October 16, 2026).
- October 2, 2026: Stars 15,446 → 16,098, latest release v2.12.0 (October 1, 2026).
What you get
- Quickly checks text in milliseconds
- Protects privacy by processing your data locally
- Offers high performance with low memory usage
Installation
brew install harperGetting started
To start using the Harper tool, you can visit the official website writewithharper.com. You can complete the installation by reviewing the integration guides suitable for the text editor you use, such as Visual Studio Code, Neovim, Helix, Emacs or Zed, in the documentation section on the site.
Related dictionary terms
Links
TreScout did not build this tool · we found it in GitHub trends and wrote it up. This page describes the repository as of 2026-07-24: The star count and our text belong to that day, the repository may have changed since. Check the repository link for the current state. The introductory text was prepared with AI from the repository's own documentation, and this page was machine-translated from the Turkish original · the Turkish version prevails.