LanguageTool is a complimentary online proofreading tool created by LanguageTooler GmbH that assists users in identifying grammar and spelling errors across more than 30 languages. Established in 2003, this AI-driven writing assistant offers more than just standard spell-checking; it delivers comprehensive text evaluations that include grammar verification, suggestions for word choice, style advice, and punctuation fixes. The service provides browser extensions for Chrome, Edge, Firefox, Safari, and Opera, as well as plugins for Google Docs, Word, OpenOffice, and LibreOffice, along with desktop applications for both macOS and Windows. Additionally, it features email integrations for platforms such as Gmail, Outlook, Apple Mail, and Thunderbird. Premium subscriptions unlock enhanced functionalities such as a rephrasing tool, Picky Mode for precise punctuation, tone detection, plagiarism checks, and recommendations for style and typography. With more than 2,000 organizations worldwide relying on its services—including notable names like BMW Group, Amazon, the European Union, and Spiegel Magazine—LanguageTool caters to freelancers, startups, small and medium-sized businesses, and larger enterprises with its real-time correction features and a commitment to user privacy.
LanguageTool
CategoryContent Creation & Art, Education & Research, Language Learning, Language Lessons & Tutoring, Text Editing, Writing & Text
Modality Text
Last UpdatedMarch 3, 2026
PricingFreemium, Paid options from $4.32/month, Billing frequency: Monthly
Visit ToolOverview
Pros & Cons
✓ Pros
- Intuitive, streamlined interface that makes navigation simple
- Robust grammar and spell checking in more than 30 languages
- Broad integrations with tools like Google Docs, Microsoft Word, Gmail, and leading web browsers
- Live writing suggestions as you type, with automatic language recognition
- Privacy-first approach where the browser extension does not retain your text
- Premium capabilities such as plagiarism checks, tone analysis, and readability scores
✗ Cons
- New users might face a steep learning curve during the initial setup process.
- The tool's ability to provide accurate, context-sensitive suggestions can sometimes be inconsistent.
- Individual users may find the cost of the premium tier unappealing compared to readily available free options.
- Occasionally, context-dependent suggestions may not hit the mark, leading to less precise advice.
- The complimentary version provides a significantly curtailed feature set relative to the full premium experience.
- Organizations with specific or large-scale needs will likely need to consult directly for tailored pricing information.
Frequently Asked Questions
With support for more than 30 languages and regional variants spanning English, German, Spanish, French, Dutch, Polish, Swedish, and others, LanguageTool automatically identifies which language you're writing in.
LanguageTool has extensions available across all major browsers—Chrome, Firefox, Edge, Safari, and Opera—boasting a user base exceeding 3 million on Chrome and 1 million on Firefox.
LanguageTool integrates with Microsoft Word on Windows, Mac, and web, plus it works with Google Docs, OpenOffice, and LibreOffice through dedicated plugins.
Yes, LanguageTool provides add-ons for Gmail, Apple Mail, Thunderbird, and Outlook (currently in beta) to enhance your email writing.
The free tier covers fundamental spelling and grammar checks with basic style feedback, whereas the premium tier unlocks full error detection, sophisticated punctuation rules, Picky Mode, AI paraphrasing, plagiarism checking, and unrestricted text submission.
LanguageTool has native iOS and Android applications, plus desktop versions for macOS and Windows, giving you access across all your devices.
LanguageTool prioritizes privacy by not retaining any of your text submissions in its browser extensions, protecting your information from storage or tracking.
Yes, LanguageTool comes with offline mode functionality, allowing you to continue checking your writing even when disconnected from the internet.
LanguageTool's advanced toolkit comprises AI-driven paraphrasing, writing tone analysis, plagiarism checking, readability assessment, text summarization, sentence rewriting, nuanced punctuation detection, and productivity analytics to monitor your writing improvements.
LanguageTool provides reduced-rate subscriptions for students and non-profit entities seeking access to premium features.