Trinka
Freemium
A grammar checker built for academic and technical writing.
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LanguageTool
Grammar Checking
Freemium
An open-source grammar and style checker that supports more than 30 languages.
About LanguageTool
LanguageTool checks spelling, grammar and style, and its big advantage is language coverage. It works in over 30 languages, including German, French, Spanish and Portuguese, which makes it a favorite for multilingual writers.
You can use it in a browser extension, Word, Google Docs, a desktop app or through an API, and recent versions add AI-powered rewriting and paraphrasing. The core engine is open source, and a self-hosted option is available.
LanguageTool has a free plan with basic checks and a Premium plan for deeper suggestions. It is a good alternative for those who want strong support beyond English.
Standout features
- 30+ languages
- Grammar and style checks
- AI rewriting
- Browser and Office add-ons
- Open-source core
- Self-hosting
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