Grammar and spelling checking
LanguageTool checks for grammar, spelling, punctuation, style, and casing issues, with examples on the site showing word order, tense, comma, and agreement corrections.
LanguageTool
Freemium
AI grammar checker and writing assistant for 30+ languages
What is LanguageTool?
LanguageTool is an AI-based grammar checker and writing assistant that helps users find and fix spelling, grammar, punctuation, style, and word-choice issues. It works across more than 30 languages and dialects, including major languages such as English, German, Spanish, French, Dutch, and Portuguese.
The product is available as a browser add-on, a dedicated editor, desktop support for Windows and macOS, and integrations for tools such as Microsoft Word, Google Docs, and LibreOffice. The site also highlights a paraphrasing tool and a statistics feature for tracking writing activity and suggestions applied.
What can LanguageTool do?
Dedicated writing editor
The editor offers a distraction-free writing space, a personal dictionary, statistics, and a dark/light appearance option for users who want to write inside LanguageTool itself.
Browser add-on for web writing
The browser add-on works while typing on the web, automatically detects the language of the text, and does not store text according to the site.
Desktop app support
LanguageTool is available for Windows and macOS and is shown working in apps such as Outlook, WordPad, Notepad, Pages, Mail, Slack, Word, Notes, and Messages.
Office suite integrations
The service integrates with Google Docs, Microsoft Word, and LibreOffice, and the Word page says the add-in works with Windows, Mac, and the online version of Word.
AI paraphrasing
The paraphrasing tool can rewrite sentences in different tones such as formal, concise, fluent, or simple, and the pricing page describes unlimited sentence paraphrasing for Premium.
Use Cases
“Writing on the web”
Use the browser add-on to catch grammar and spelling issues while drafting emails, blog posts, or social media text directly in the web app you are already using.
“Drafting and reviewing longer text”
Use the dedicated editor when you want a focused writing space with statistics, a personal dictionary, and configurable display options.
“Editing documents in office apps”
Use the Word, Google Docs, or LibreOffice integrations when you need proofreading inside office documents, essays, letters, or other document-based workflows.
“Rewriting sentences and paragraphs”
Use the paraphrasing tool when you want to rephrase a sentence to sound more formal, fluent, simple, or concise.
“Maintaining team consistency”
Use the team features when an organization needs shared wording rules and a common dictionary for consistent text across multiple writers.
Frequently Asked Questions
Is LanguageTool free?
Yes. The free version corrects spelling, simple punctuation, and some style mistakes. Premium is described as showing all errors and providing the best possible text.
Does LanguageTool work in the programs I already use?
LanguageTool works in common internet browsers through extensions and add-ons, and the site also points to dedicated apps and integrations such as Word and LibreOffice.
Which languages can LanguageTool check?
LanguageTool supports more than 30 languages and dialects. The site highlights English, Spanish, German, French, Dutch, and Portuguese as main languages, and offers six English varieties in the English version.
How does LanguageTool show suggestions?
Error cards appear automatically while you type. You can also double-click a word to see synonyms.
Can organizations use LanguageTool as a team?
The product page says team accounts are available for companies, and the pricing page includes a Teams plan with shared style and dictionary features.
Quick Facts
- Category
- AI grammar checker
- Platforms
- Web, browser add-ons, Windows, macOS, Microsoft Word, Google Docs, LibreOffice
- Languages
- 30+ languages and dialects
- Primary users
- Individuals, writers, and teams
- Pricing
- Free version available; Premium and Teams plans are offered
- Website
- languagetool.org
LanguageTool Traffic Analysis
Traffic data is for reference only.
- Domain Rating
- 80
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