LanguageTool

Overview​

LanguageTool is a multilingual writing assistant for spelling, grammar, punctuation, style and AI-assisted rewriting across browsers, documents and apps. Its broad language coverage and self-hostable core are useful, but premium depth varies by language and generative features require careful review.

Best for​

Multilingual grammar and style checking, rewriting, team style guidance and writing assistance inside browsers and common document workflows

Pricing and availability​

A free tier provides core checks with text-length and feature limits. Premium unlocks deeper rules, longer texts and additional AI functions; team plans add shared administration, and API or enterprise arrangements are priced separately.

Platforms and integrations​

Available through: web, windows, macos, ios, browser ext.

Browser extensions, web and desktop apps, Microsoft Word, Google Docs, LibreOffice and supported email or writing tools. A developer API and open-source server components support custom integration.

Privacy and security​

Cloud checks send text for processing under LanguageTool's privacy terms, while local or self-hosted options can reduce data exposure for supported workflows. Organizations should verify which add-ons and AI features use remote services before processing confidential text.

Key strengths​

• Broad multilingual checking exceeds many English-first competitors
• Browser and document integrations fit everyday writing workflows
• Open-source components and an API support technical deployment options

Key limitations​

• Correction depth and AI features are uneven across languages
• Free accounts face text-length and feature limits
• Automated style suggestions can alter meaning or authorial voice

Editorial note​

CoinBotLab independently maintains this record using current provider documentation and independent sources. Features, pricing, availability and policies can change.