https://writewithharper.com
Harper | Privacy-First Offline Grammar Checker for Developers & WritersHarper: Free, Open Source Grammar CheckerHarper: The Private Grammar Checkersublime-text
Harper is a blazing-fast, open-source grammar & spell checker that runs entirely on your device, covering US, UK, Canadian & Australian English—no data ever leaves your machine. Harper is the only grammar checker that doesn't use AI.