LanguageTool

A multilingual grammar, spelling, and punctuation checker that runs in the browser and as add-ons for Chrome, Word, and Google Docs. The free plan handles everyday essays and emails in 30+ languages without paying.

Best for: Free multilingual grammar checking

What you get

• Free plan: checks spelling, grammar, punctuation and basic style in 30+ languages, with a limit of roughly 10,000 characters per check.
• Premium adds advanced style/'picky mode' suggestions, paraphrasing, and a much higher character limit (~100,000+; exact figure varies by source, so check their site).
• Premium runs ~$5/mo on longer plans; annual is a bit higher and month-to-month is much pricier (~$20-25/mo). A 20% limited-time discount and a 14-day money-back guarantee are currently shown, so check their site.
• Students, teachers and professors can get up to 20% off Premium via the EDUCATION coupon after verifying status (UNiDAYS/Student Beans/SheerID/ID.me).

How students use it

• Proofread essays in English or 30+ other languages
• Catch grammar and style as you type in the browser
• Check clarity on a draft before submitting