LanguageTool
What is LanguageTool?
LanguageTool is an open-source proofreading software designed to help users improve their writing by detecting and correcting grammar, spelling, punctuation, and style errors across more than 30 languages. Founded in 2003 by Daniel Naber, it serves a wide range of users, including writers, students, professionals, and businesses, by offering tools for error-free communication. The platform supports browser extensions, desktop apps, and integrations with popular software like Microsoft Word and Google Docs, making it versatile for various writing contexts. Its mission is to enhance clarity and professionalism in writing, with a focus on multilingual support and user privacy through GDPR-compliant hosting and self-hosting options. LanguageTool’s free version provides robust core functionality, while its Premium version offers advanced features like improved error detection and style suggestions. Recently acquired by Learneo, Inc., LanguageTool continues to innovate with AI-driven tools like paraphrasing to meet diverse user needs.
LanguageTool's Core Features
Multilingual grammar checking corrects errors in over 30 languages, ensuring accurate and professional writing.
Browser extensions for Chrome, Firefox, and Edge enable real-time proofreading across web platforms like Google Docs and social media.
AI-based paraphrasing rephrases sentences to improve clarity, tone, or formality, enhancing communication effectiveness.
Team accounts allow businesses to enforce consistent style and branding with custom dictionaries and style guides.
Offline and self-hosting options ensure user privacy by allowing local text processing without server storage.
Integrations with Microsoft Word, LibreOffice, and other tools streamline proofreading within popular writing applications.
Style suggestions improve writing by detecting overused phrases, redundant words, and improper word choices.
Punctuation checking ensures correct usage of commas, dashes, and hyphens for polished text output.
Frequently Asked Questions
Analytics of LanguageTool
Monthly Visits Trend: Apr 2025 - May 2026
Traffic Sources
AI Channel Traffic Trends
Top Regions
| Region | Traffic Share |
|---|---|
| Germany | 15.93% |
| Brazil | 13.72% |
| United States | 10.49% |
| Spain | 6.07% |
| Colombia | 5.72% |
Top Keywords
| Keyword | Traffic | CPC |
|---|---|---|
| languagetool | 110.3K | $1.04 |
| corrector de ortografia | 103.2K | $0.15 |
| language tool | 55.1K | $0.92 |
| corrector ortografico | 174.1K | $0.16 |
| ortografia | 105.3K | $0.16 |
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