Correct spelling, grammar, and style
LanguageTool underlines mistakes and offers the correction in one click. It also catches errors an ordinary spell checker lets through: agreement, commas, confused words, awkward phrasing.
LanguageTool is a spelling, grammar, and style checker that started in Germany. You paste a text on its website, or install it in your browser and your apps, and it underlines mistakes as you write. It can also rephrase a sentence. It handles more than thirty languages, including French.
LanguageTool has a free plan. The recommended plan to start with: Free, €0. Prices checked on October 3, 2026 on the vendor’s official page.
Who it’s for: anyone who writes emails, meeting notes, or posts in French or in several languages and wants a quick proofread.
LanguageTool underlines mistakes and offers the correction in one click. It also catches errors an ordinary spell checker lets through: agreement, commas, confused words, awkward phrasing.
You select a sentence, and LanguageTool suggests other versions: simpler, smoother, more polished. You choose the one that works for you.
With the extension, mistakes are underlined wherever you write: webmail, LinkedIn, forms, internal tools. No more copying and pasting.
Also
Prices taken from the LanguageTool help center. The plans page showed a temporary 20% discount when we checked. Students and teachers can ask for a discount.
| Plan | Price | Who it’s for |
|---|---|---|
| Free Recommended to start | €0 | Proofreading an email or a paragraph now and then |
| Premium | €59.89 per year | Writing every day, in the browser and in your apps |
| Teams | €56.90 per user per year | A team that wants the same writing rules |
The checker and the rephrasing tool on the website: 2,000 characters per text and 3 rephrasings per day. The Mac and Windows apps have a free version that corrects basic mistakes.
Start with the free website to proofread your important emails. Go for yearly Premium if you want corrections right in your browser and your apps, with no copying and pasting: that’s where the tool becomes truly practical. Avoid paying monthly, which costs four times more over a year.
Your data. Your texts are sent to LanguageTool’s servers to be corrected, over an encrypted connection, and are not used to train AI.
What it does less well
Free: €0; Premium: €59.89 per year; Teams: €56.90 per user per year. Prices checked on October 3, 2026 on the vendor’s official page.
Yes. The checker and the rephrasing tool on the website: 2,000 characters per text and 3 rephrasings per day. The Mac and Windows apps have a free version that corrects basic mistakes.
Your texts are sent to LanguageTool’s servers to be corrected, over an encrypted connection, and are not used to train AI.
Antidote: More complete for French, with dictionaries and guides, and a version that works offline. Grammarly: Richer if you write mostly in English. DeepL: For translating entire texts, with DeepL Write to correct and rephrase. QuillBot: If you’re mostly looking to rephrase and summarize.
Page checked on October 3, 2026. Brands are named to identify the tools. No affiliation.