Grammarly offers proofreading, paragraph rewrites and tone suggestions for individuals, teams and larger organizations, with a free plan.
Free plan · Paid plans: see official pricing
LanguageTool
LanguageTool: AI grammar, spelling, punctuation and style checker in 30+ languages, with a paraphraser, for students, professionals and teams.
- Free plan
- Web app · Browser extension · Desktop · Mobile · Plugin or MCP
- Verified 16 Oct 2026
What LanguageTool does
LanguageTool is an AI-based grammar checker that checks grammar, punctuation, spelling and style in many languages, and includes an AI paraphraser. It offers a free Basic plan and a Premium plan with enhanced style checking, unlimited AI sentence paraphrasing and a Style Guide with custom rules. It is available as a web app, browser extension, desktop app, mobile app, and plugin or MCP.
Built for
- Students and academic writers
- Professionals
- Teams and companies
Key features
- Grammar, spelling and punctuation checking in 30+ languages
- Enhanced grammar, punctuation and style checking (Premium)
- Unlimited AI sentence paraphrasing (Premium)
- Style Guide with custom rules (Premium)
- Writing statistics on productivity, errors and suggestions
- Browser add-on for writing on the web
Pros and cons
Pros
- The Basic plan is free and covers grammar, spelling and punctuation checking in 30+ languages.
- Signup is self-serve.
- It runs on several platforms: web app, browser extension, desktop, mobile, and plugin or MCP.
- Writing statistics report on productivity, errors and suggestions.
Cons
- Enhanced style checking, unlimited AI paraphrasing and the Style Guide with custom rules are only on the Premium plan.
Where LanguageTool is listed
LanguageTool is listed under AI grammar checkers in AI writing tools.
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