LanguageTool

Free AI Grammar Checker - LanguageTool is an AI-based writing assistant that checks grammar, spelling, style, and tone across multiple languages. It offers paraphrasing capabilities, a premium plan with extensive features for businesses, and GDPR-compliant solutions. The tool is accessible via a web editor, browser add-ons, and office/app integrations, providing a distraction-free writing experience with real-time feedback. It emphasizes privacy, with options to store texts securely and to use a browser extension that does not store data locally by default.

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Key Capabilities

• Grammar, spelling, punctuation, and style checks across 7,000+ languages and dialects (including English, German, Spanish, French, Dutch, Portuguese, and more).
• Paraphrasing Tool to rewrite sentences for formality, fluency, simplicity, or conciseness.
• GDPR-conform solutions for business use, designed for consistent brand voice and compliant communications.
• Real-time suggestions while typing, with automatic error detection and inline correction cards.
• Readable statistics to track language usage, error trends, and improvements over time.
• Multi-device and multi-platform support through browser add-ons, desktop apps, and integrated editors.

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How It Works

1. Paste your text or type directly into the editor.
2. LanguageTool detects language automatically and provides grammar, spelling, and style suggestions.
3. Review the suggestions and apply changes to improve accuracy and tone. Paraphrase as needed to fit your target audience.
4. Access additional features like statistics, style checks, and recommended rewrites to refine your writing.

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Features and Tools

• Free grammar checker with multilingual support (7,000+ languages and dialects)
• Paraphrasing Tool for rephrasing sentences (formal, fluent, simple, concise)
• Premium features for businesses (GDPR-compliant, brand voice consistency)
• Browser add-ons for Chrome, Edge, Firefox, Safari, Opera
• Office integrations: Google Docs add-on, Microsoft Word add-in, Outlook compatibility
• Desktop apps and text editors for macOS, Windows, iOS, and other platforms
• Writing statistics to monitor errors, languages used, and suggestions applied
• Privacy-focused: browser add-on does not store text by default; configurable data handling

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Supported Platforms

• Web editor (free and premium)
• Browser extensions: Chrome, Edge, Firefox, Safari, Opera
• Google Docs add-on
• Microsoft Word add-in and Office integrations
• macOS and Windows desktop apps
• iOS and other mobile integrations

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Safety and Privacy Considerations

• Free and premium tiers available with varying feature sets.
• GDPR-conform solutions for business use to support compliant communications.
• Texts can be stored locally or on approved servers depending on the plan and configuration.
• Paraphrasing and rewriting features should be used responsibly to avoid misrepresentation and ensure accuracy.

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Core Features

• AI-powered grammar and style checking across multiple languages
• Paraphrasing tool with selectable tone and formality
• GDPR-compliant business solutions for brand consistency
• Real-time suggestions and auto-correction cards
• Writing statistics and progress tracking
• Broad platform support (browser add-ons, office integrations, desktop/mobile apps)
• Data privacy controls and configurable storage options