LanguageTool
Verified working Aug 7, 2026
Grammar and style checking across 30+ languages and major writing apps.
LanguageTool checks writing for grammar, spelling, punctuation, casing, and style issues in a browser-based editor and across common writing environments. It also includes paraphrasing, writing statistics, a personal dictionary, browser extensions, office add-ons, desktop apps, and business options for teams that need consistent communication.
Why it stands out
- Supports more than 30 languages and dialects, making it more multilingual than many English-first grammar tools.
- Covers many writing surfaces: web editor, browsers, email clients, office suites, and desktop apps.
- Includes writing statistics that show languages used, mistakes made, and suggestions applied over time.
- Browser add-on is described as not storing typed text, a useful privacy distinction for web-wide checking.
- Offers team-oriented options, including GDPR-focused business use and an integration API.
Good to know
- Some advanced punctuation, style, and typography suggestions are tied to Premium features.
- Unlimited paraphrasing is positioned as a Premium benefit, so free use may be capped.
- The Microsoft Word add-in requires Word 2016 or later or Office 365.
- Desktop app coverage depends on supported operating systems and apps; the page lists different integrations for macOS and Windows.
Photos
Multilingual writers, editors, students, and customer-facing teams can proofread everyday text across several languages without switching tools. Check emails, social posts, and web forms through browser or email add-ons. Review essays, reports, dissertations, or drafts in Google Docs, Microsoft Word, LibreOffice, and similar editors. Track recurring mistakes and writing activity with account-based statistics. Use paraphrasing when a sentence needs a different tone or clearer wording.
AI-assisted grammar, spelling, punctuation, style, and typography suggestions; paraphrasing tool; web editor with saved texts, dark/light mode, personal dictionary, and statistics; browser extensions for Chrome, Edge, Firefox, Safari, and Opera; add-ons for Gmail, Outlook, Apple Mail, Thunderbird, Google Docs, Word, Apple Pages, and LibreOffice; desktop apps for macOS and Windows; business plans and proofreading API.
Technical Notes
- LanguageTool offers a proofreading API for integrating its text-checking capabilities into other products or workflows.
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