Writers in many languages can check grammar free on the web, but the browser extension became Premium-only and the Premium price did not display.
Kenning's take
What it does
A grammar, spelling and style checker for more than 30 languages, with an AI paraphrasing tool that rewrites sentences in a chosen tone. Text can be checked in the web editor for free, while the browser extension and add-ons for Word, Google Docs and email now need Premium.
- grammar, spelling and punctuation checks in 30+ languages
- AI paraphrasing and tone suggestions
- web editor with a free Basic plan
- add-ons for Word, Google Docs, Gmail, Outlook and Apple Mail
- desktop apps for macOS and Windows
- open-source core that can be self-hosted
Who it suits. People who write in more than one language, especially European languages, and want a Grammarly-style checker.
Key facts
- Category
- Writing, emails & letters
- Made by
- LanguageTooler GmbH
- Based in
- Germany
- Launched
- 2003
- Works on
- Web, Mac, Windows, Chrome extension
- In the UK
- Yes
- Free plan
- Free Basic plan in the web editor (2,000 characters per field, 3 AI rephrasings a day); the browser extension is Premium-only
Reviews and write-ups
- Thurrott.com 2026-03-27
- It's FOSS
FAQ
Is LanguageTool free?
The web editor has a free Basic plan. The browser extension is now limited to Premium users; Premium prices did not display on the official page when checked.
How many languages does LanguageTool support?
More than 30.
Who makes LanguageTool?
LanguageTooler GmbH, based in Hamburg, Germany. LanguageTool started in 2003 as an open-source project.
Facts from the maker's own pages and the sources listed. Checked 2026-10-11.
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