Free AI Grammar Checker - LanguageTool
Instantly check grammar, punctuation, and spelling errors with LanguageTool's AI-powered grammar checker. Enhance your writing in over 30 languages with ease.
LanguageTool is an open-source grammar and spell checker that supports more than 20 languages. It is designed to help users improve their writing by identifying grammar, spelling, and style issues. LanguageTool can be used as a standalone application, integrated into other software, or accessed via its web interface. It is widely used by individuals, educators, and organizations around the world to enhance the quality of written communication.
1.4M
45000 / day
1.5M
50000 / day
5.5 min
3.2 pages per visit
40%
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Domain Rating
-
Domain Authority
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Citation Level
2003
English, etc
Website Key Features
Grammar Checking
Identifies and corrects grammar mistakes in over 20 languages.
Spell Checking
Detects spelling errors and suggests corrections.
Style Checking
Offers suggestions to improve writing style and readability.
Multi-language Support
Supports a wide range of languages for grammar and spell checking.
Open Source
Free to use and modify, with source code available for developers.
Integration
Can be integrated into browsers, text editors, and other software.
Custom Rules
Allows users to create and apply custom grammar and style rules.
API Access
Provides API for developers to integrate LanguageTool into their applications.
Privacy Focused
Offers options for local checking without sending text to external servers.
Community Driven
Benefiting from contributions by a global community of linguists and developers.
Similar Sites and Competitors
Additional information
License
LanguageTool is released under the GNU Lesser General Public License (LGPL).
Platforms
Available as a web service, desktop application, and browser extensions for Chrome, Firefox, and others.
Community and Support
LanguageTool has an active community and offers support through forums, documentation, and social media.
Development
Continuous development and updates are made by a team of linguists, developers, and volunteers.
Usage
Used by millions of users worldwide, including students, professionals, and language learners.
HTTP headers
Security headers report is a very important part of user data protection. Learn more about http headers for languagetool.org