The best Grammarly alternative if you write in more than one language, and about half Grammarly's annual price, but the browser extension now needs Premium.
What it is
LanguageTool checks grammar, spelling, punctuation and style in more than 30 languages and dialects, with 20,000+ extra checks in Premium for English, German, French, Spanish, Dutch, Polish and Portuguese. It works in its own web editor, Word, Google Docs, LibreOffice and Apple Pages, browser extensions for Chrome, Edge, Firefox and Safari, and apps for Windows, macOS and iOS. The free Basic plan checks up to 2,000 characters per text field with 3 AI rephrasings a day, but since the March 2026 change the hosted browser extension works only with Premium. Premium is $69.90 a year (about $5.83 a month), $49.90 a quarter, $24.90 month to month or $119.80 for two years, with a 14-day money-back guarantee; Teams starts at $66.40 per user a year. The open-source core can run on your own server, and the extension still works free against it. Owned by Learneo, which also owns QuillBot. Checked November 12, 2026.
Best for
- Writing in several languages
- Long documents (150,000 characters per field on Premium)
- Privacy-minded users who self-host
What we like
- 30+ languages, far more than Grammarly
- Premium costs about half of Grammarly Pro per year
- Open-source core you can self-host
What to watch
- Browser extension needs Premium since March 2026 (or your own server)
- Free plan capped at 2,000 characters per check
- Fewer AI rewriting and tone tools than Grammarly
- Month-to-month Premium is $24.90
Where LanguageTool ranks
Alternatives and head-to-heads
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