Tool dossier

LanguageTool

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

4 sources 14,253 stars Self-hosted LGPL-2.1

Product snapshot

How the interface presents itself

LanguageTool interface screenshot

Positioning

What this project is really offering

The goal here is to separate raw catalog facts from the sharper product shape users care about before they commit time.

About

Advanced AI-powered grammar checking that goes beyond basic spell check to provide comprehensive writing assistance across 30+ languages and dialects. Trusted by over 2000 organizations including BMW Group, European Union, and JetBrains. Key features include: The platform offers both free and premium versions, with the free tier handling basic grammar and spelling errors, while premium provides advanced style suggestions, punctuation refinement, and enhanced error detection. Privacy-focused design ensures no text is stored by browser extensions. Perfect for students, professionals, and organizations requiring error-free, polished writing across multiple languages and platforms.

Highlights

The capabilities most worth remembering

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Real-time grammar and punctuation correction

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Multi-language support

03

Style and tone improvements

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Paraphrasing tool

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Browser extensions

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Desktop applications

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Office integrations

Evidence

What backs up the editorial summary