LanguageTool vs Grammarly | Which Is Best for You?
When it comes to polishing your writing, writing assistants like Grammarly and LanguageTool are two of the most popular tools on the market. But which one is better suited for your needs?
In this in-depth comparison, we’ll explore:
- Key features
- Language support
- Integrations
- Pricing
By the end, you’ll have a clear understanding of which tool—Grammarly or LanguageTool—is the better fit for your writing style and workflow.
What is LanguageTool?
LanguageTool is an open-source AI-powered writing assistant known for its multilingual support. It’s popular among non-native English writers and teams looking for collaborative editing.
Some of LanguageTool’s key features are:
- Grammar and style checking in 30+ languages
- Picky mode for advanced style suggestions
- Personal dictionary and rule customization
- Team features
- Desktop and web apps, browser extensions
- Integrations with MS Word, Google Docs, and more
What is Grammarly?
Grammarly is a real-time writing assistant powered by artificial intelligence. It corrects grammar, spelling, and punctuation errors and offers style suggestions to improve clarity, tone, and engagement.
Grammarly’s key features include:
- AI-based grammar, punctuation, and spelling correction
- Tone detection and rewriting suggestions
- Clarity and conciseness improvements
- Plagiarism checker (Premium)
- Browser extensions, desktop app, and mobile keyboards
- Integrations with Google Docs, MS Word, and more
LanguageTool vs Grammarly: Feature comparison
Both LanguageTool and Grammarly offer advanced grammar checking and style recommendations.
However, Grammarly works only in English, while LanguageTool works in over 30 languages and dialects, including Spanish, French, German, Dutch, and Portuguese.
| Feature | LanguageTool | Grammarly |
|---|---|---|
| Advanced grammar, punctuation, and spell checking | ||
| Style recommendations | ||
| Personal dictionary | ||
| Personal style guide | (Teams only) | |
| Paraphrasing | ||
| Plagiarism checker and AI detector | ||
| Team collaboration | ||
| Offline use | ||
| Multilingual support | (English only) |
Integrations
LanguageTool and Grammarly both seamlessly integrate into many commonly used programs and apps.
LanguageTool additionally integrates well with open-source editors and is more developer-friendly.
| App/Extension | LanguageTool | Grammarly |
|---|---|---|
| Google Chrome | ||
| Microsoft Edge | ||
| Mozilla Firefox | ||
| Safari | ||
| Windows | ||
| macOS | ||
| iOS | ||
| Microsoft Word | ||
| Overleaf | ||
| LibreOffice | ||
| Obsidian |
Pricing
Grammarly offers a free plan, while LanguageTool’s grammar checker and paraphraser can only be used for free via their website (i.e., not in apps or extensions). However, LanguageTool’s paid plans are significantly cheaper than Grammarly’s.
Final verdict: Grammarly or LanguageTool (or QuillBot?)
LanguageTool is clearly the better choice if you need multilingual support or are part of a multilingual team. With LanguageTool, you get grammar correction in multiple languages and at a lower price point than Grammarly’s premium subscription.
If you are looking for free basic grammar correction or additional tools like AI detection in English, Grammarly could be a good option.
But, might we suggest you look into a tool we’re particularly partial to? You guessed it—it’s QuillBot! QuillBot offers a free plan, supports multiple languages, and gives you access to additional tools such as AI Detector, AI Humanizer, Translate, AI Chat, and more. Plus, QuillBot’s Premium plan is cheaper than Grammarly’s, with many of the same features.
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QuillBot. (2025, August 26). LanguageTool vs Grammarly | Which Is Best for You?. Quillbot. Retrieved October 14, 2025, from https://quillbot.com/blog/quillbot-tools/languagetool-vs-grammarly/
