LanguageTool review
8.0/10★★★★★Multilingual grammar and style checker for 30+ languages, with AI paraphrasing
- Best for
- People who write in more than one language, especially European languages
- Price
- Freemium · from $4.99/month
Free: Checks up to 2,000 characters per text field and 3 AI rephrasings a day - Platforms
- Web, Desktop app, Chrome extension, Microsoft Word, Google Docs, Other
- Made by
- LanguageTooler GmbH (Learneo, Inc.) · since 2003
What it is
LanguageTool checks grammar, spelling, punctuation and style in more than 30 languages and dialects, including English, German, Spanish, French, Dutch and Portuguese. Premium adds unlimited AI paraphrasing, a much larger character limit and thousands of extra style checks. It began as an open-source project in 2003 and was acquired by Learneo in April 2023.
What the AI does
- AI paraphrasing with tone options (formal, concise, fluent, simple)
- Grammar, spelling and punctuation checks in 30+ languages
- Advanced style suggestions and Picky Mode
- Personal dictionary and style guide
Pros and cons
- Strongest multilingual support in the category
- Very cheap on annual billing
- Works in Word, Google Docs, LibreOffice, Pages and email clients
- Open-source core with a privacy focus
- Flags correct technical terms and specialist wording as errors
- AI suggestions are less refined than Grammarly's for English
- No current mobile app listing on the US App Store or Google Play
How it scores
Unmatched for multilingual writers and excellent value; false positives on technical text and lighter AI features cost it on quality.
Feature checklist · 6 of 9
- Grammar and spelling checks (yes)
- Rewrites or paraphrases your sentences (yes)
- Adjusts tone, formality or length (yes)
- Drafts new text from a prompt or template (no)
- Works inside other apps via extension, add-in or keyboard (yes)
- Supports languages other than English (yes)
- Plagiarism or AI-detection check (no)
- Readability or in-depth style reports (no)
- Custom style guide, brand voice or matches your own style (yes)
Alternatives
See all LanguageTool alternatives, ranked →
- Grammarly 8.6/10Anyone who wants polished, correct writing in every app without copying text into a separate tool
- QuillBot 8.1/10Students and non-native English writers who want to rephrase, summarise and cite on a budget
- ProWritingAid 7.7/10Novelists and long-form writers who want deep editing reports, not just error fixes
- Notion AI 7.6/10Teams that already keep their docs and notes in Notion
Grammarly vs LanguageToolQuillBot vs LanguageToolLanguageTool vs ProWritingAid