LanguageTool vs ProWritingAid: Grammar Checker & Paraphrasing Tool

LanguageTool and ProWritingAid: Grammar Checker & Paraphrasing Tool both compete in the same corner of the Chrome Web Store (grammar), but they are built for different users. LanguageTool has roughly 2M users and a 4.7-star average; ProWritingAid: Grammar Checker & Paraphrasing Tool sits at about 200K users with 4.8 stars. On pricing, LanguageTool is freemium while ProWritingAid: Grammar Checker & Paraphrasing Tool is free.

LanguageTool Chrome extension logo

LanguageTool

4.7

Open-source grammar checker supporting 30+ languages.

ProWritingAid: Grammar Checker & Paraphrasing Tool Chrome extension logo

ProWritingAid: Grammar Checker & Paraphrasing Tool

4.8

Gain confidence in your writing with the best grammar checker and paraphrasing tool that works wherever you do.

Side-by-side comparison

LanguageToolProWritingAid: Grammar Checker & Paraphrasing Tool
Rating4.7 / 54.8 / 5
Reviews12,6007,000
Users~2M+~200K+
PricingFreemium · From $4.99/moFree
CategoryWritingProductivity
DeveloperLanguageToolOrpheus Technology Limited
Last updated2026-06-202026-08-24
Best forMultilingual writers and privacy-conscious teams who want a self-hostable alternative to Grammarly.Gain confidence in your writing with the best grammar checker and paraphrasing tool that works wherever you do.

Final recommendation

LanguageTool wins on adoption, but ProWritingAid: Grammar Checker & Paraphrasing Tool scores higher with reviewers — start there if ratings matter more.

Frequently asked questions

Can I install LanguageTool and ProWritingAid: Grammar Checker & Paraphrasing Tool at the same time?

Yes, Chrome runs them independently. Keep both only if they do different jobs; if they overlap, pick one, because each active extension adds memory use, page scripts and another set of permissions.

Where do the ratings and install numbers come from?

From each extension's public Chrome Web Store listing. They can lag the live store slightly, and a dash means the figures have not been synced yet.

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