LanguageTool
Free Basic grammar and spelling checker in 30+ languages.
Writing
What you get
Grammar, spelling and punctuation checks in 30+ languages, up to 2,000 characters per text field, and 3 AI sentence rephrasings a day.
How to get it
Click "Try for free" on languagetool.org/premium.
What it requires
Not stated on the pricing page.
The catch
Checks stop at 2,000 characters per text field; style suggestions, picky mode and texts up to 150,000 characters are Premium.
From the official page · checked Oct 26, 2026