LanguageTool

Grammar and style checks in more than thirty languages in the browser, Word and Google Docs

Vendor	LanguageTooler GmbH
Category	Documents and writing
Website	languagetool.org
Free plan	Yes
Paid plans	Paid plans on request. Free plan available
Updated	2026-09-22

LanguageTool checks spelling, punctuation, grammar and style in more than thirty languages, including English, German, Spanish, Portuguese, French, Polish and Ukrainian: agreement, punctuation, repetitions and awkward phrasing. It works as a browser extension, an add-on for Word and Google Docs and a desktop app. The paid plan adds sentence rewriting and checks of long texts. For an accountant or a lawyer it is a way to check an internal order, a letter or a claim before sending, especially in a language other than English.

Free plan

Checks of fragments up to 10,000 characters at a time, basic grammar and spelling rules

Paid plans

Plan	Price	What you get
Premium	price on request	An individual plan with rewriting and the full rule set; price depends on region and billing period, check the vendor's site
Teams	price on request	Per user, shared dictionary and admin controls, check the vendor's site

LanguageTool pricing

Tasks it handles well

Most useful for

Pitfalls to watch at work

The extension sends text to the service's servers for checking: for documents with trade secrets check your company policy or use a corporate plan with processing in Europe
Accounting and legal terminology is often flagged as an error: add the terms to your personal dictionary instead of accepting every correction

Billing

Card or PayPal payment on the website, prices in euros or dollars with VAT for individuals where required.

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