LanguageTool is a grammar, spelling, and style checker that works across browsers, desktop apps, and integrations. It supports over 30 languages and dialects, including English, German, Spanish, French, Portuguese, and more.
Unlike basic spellcheckers, it goes beyond surface errors. It flags grammar mistakes, punctuation issues, tone problems, and awkward phrasing, with suggestions that aim to sound natural rather than robotic.
If you write in more than one language, most tools fall short fast. LanguageTool shines here. It’s especially useful for non-native writers, international teams, students, and professionals who need reliable corrections without rewriting everything for them.
It also appeals to privacy-conscious users. You can use it in the cloud or self-host it, which is rare in this category.
You write or paste text into the editor, or let LanguageTool run in the background via a browser extension, desktop app, or integration (Google Docs, Word, email, etc.). The system highlights issues and suggests fixes you can accept or ignore.
