LanguageTool
Multilingual grammar checker supporting 30+ languages with free tier and open-source core
4.4/ 5
2003
FreemiumFree with limits. Premium $4.99/month (annual $59.88). Enterprise custom. APIOpen Source web windows mac linux chrome-extension api
Visit LanguageToolAbout LanguageTool
LanguageTool is the best free multilingual grammar checker, supporting over 30 languages including English, German, French, Spanish, and many others. With both free and premium tiers, it offers comprehensive grammar and style checking with a commitment to privacy and open-source values. The platform integrates across browsers, email clients, and writing tools.
Key Features
- 30+ language support for grammar checking
- Style and tone suggestions
- Browser extension and desktop apps
- Email client add-ons
- Personal dictionary
- Picky mode for advanced suggestions
- API access
- Offline desktop app
Pros
- Best free multilingual grammar tool
- Extensive language support
- Open-source core (privacy-friendly)
- Affordable premium tier
Cons
- Fewer features than Grammarly
- Free version has character limits
- Less advanced AI features
- Interface less polished
Tags
grammar-checkermultilingualopen-sourceprivacy-focusedwriting-assistant
Alternatives to LanguageTool
01Grammarly
AI writing assistant for clarity, correctness, and toneProWritingAid
Long-form writing editor with 20+ in-depth style reports for authors and content creatorsReverso
Translation with context examples, conjugation, and grammar tools for natural language learningMore Translation & Language ToolsView All
01DeepL
Next-generation AI translation with unmatched accuracy and natural language qualityGoogle Translate
Free translation across 133 languages with instant text, voice, and image translationMicrosoft Translator
Enterprise-grade translation integrated with Microsoft 365 and Teams for global collaborationReverso
Translation with context examples, conjugation, and grammar tools for natural language learningYandex Translate
Neural machine translation supporting 111 languages with strong performance for Russian and Eastern European languagesPapago
Naver's AI translator optimized for Korean, Japanese, and Chinese with high accuracy