LanguageTool
Your writing assistant for grammar, punctuation, style, and spelling.
Quick Answer
AILanguageTool is a multilingual writing assistant for individuals and businesses. It supports over 30 languages, including English, German, and Spanish, with advanced checks for grammar, spelling, and style. Best for students, professional writers, and international teams needing error-free communication. Freemium pricing.
LanguageTool is an AI-based grammar checker and paraphrasing tool for individuals and businesses. It checks text for grammatical errors, spelling mistakes, punctuation issues, and offers style suggestions across more than 30 languages. Available as a web editor, browser add-on, and desktop app, it helps users craft polished and professional content. LanguageTool offers a free version with basic checks and a Premium version with advanced features and unlimited paraphrasing.
LanguageTool offers comprehensive grammar, spelling, and style checking in over 30 languages and dialects, including a unique 'Picky Mode' for advanced suggestions and a Team Style Guide for consistent brand voice. Its core technology is open-source, allowing users to review and contribute, or even set up their own LanguageTool server.
Decision Intelligence
Best For
AIType
Free Trial
No
Credit Card
Not Required
Free Plan
Yes
Dimension Scores
· 7.0 avgHow good it is, across universal quality axes
Task Scores
· 3.9 avgWhat it can do, per category it works in · showing 4 of 10 tasks scoring 5+
Scores are AI-estimated from publicly available data — not an independent test or a verified user rating. How we rank →
- -Free plan is capped at 2,000 characters per text field
- -Free plan offers only 3 sentence paraphrases per day
- -Free plan provides limited style and tonality suggestions
- -Team Plan subscriptions cannot be paused
- -Member accounts within a Team Plan cannot be transferred to a third party
- -Does not offer a telephone hotline for customer service
Complexity
Company Size
Target Team Size
Target Skill Level
The Model(s) Behind It
Model details — extracted from public vendor sources by our pipeline (AI extraction plus a source check) or admin-entered. Shown as claimed by the vendor; not independently audited by Intelloro.
Browser add-on for grammar and style checking
Browser add-on for grammar and style checking
Browser add-on for grammar and style checking
Browser add-on for grammar and style checking
Browser add-on for grammar and style checking
Email add-on for grammar and style checking
Email add-on for grammar and style checking
Email add-on for grammar and style checking
Auto-updated
Trust Score
Very Good
Based on 8 data signals
Confidence: High
Reflects publicly available data, not an independent audit
No published data
Not yet checked
Some details are AI-generated estimates — verify with the vendor.
AI-generated estimate: Best For, Description, Limitations, Quick Answer, Tagline, What Makes Unique
How we source dataAI Governance & Regulatory Disclosures
Legally-sensitive fields — extracted from public vendor sources by our pipeline (AI extraction plus a source check) or admin-entered. Shown as claimed by the vendor; not independently audited by Intelloro.
Switching & Migration
Pricing verified from the vendor pricing page.
User Reviews
No reviews yet. Be the first to review!
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Who It's For3 rolesWriters and AuthorsTechnical WritersEditors
Platform, Content & Languages3 content types11 languagesTextEmailDocumentEnglishGerman+11 more
Output Languages
Content Types
Accepts
Produces
Frequently Asked Questions
What can LanguageTool do?
LanguageTool can: Grammar and punctuation checking, Spelling correction, Style improvement suggestions, AI-powered sentence paraphrasing. Best for: Individuals who want to improve their writing for personal or professional use.
How much does LanguageTool cost?
LanguageTool is open source and free to self-host. Cloud hosting options may have separate pricing.
Is LanguageTool free?
Yes, LanguageTool is open source and free to self-host. Managed hosting may carry separate costs.
What makes LanguageTool unique?
LanguageTool offers comprehensive grammar, spelling, and style checking in over 30 languages and dialects, including a unique 'Picky Mode' for advanced suggestions and a Team Style Guide for consistent brand voice. Its core technology is open-source, allowing users to review and contribute, or even set up their own LanguageTool server.
Does LanguageTool have an API?
Yes, LanguageTool offers a public API for developers to integrate its capabilities into custom applications and workflows.
What platforms does LanguageTool support?
LanguageTool is available on web, desktop, API, and browser extension.
What languages does LanguageTool support?
LanguageTool supports 11 languages including English, German, Portuguese, Spanish, French, and more.
Does LanguageTool work offline?
Yes, LanguageTool supports offline use — you can run it without an active internet connection.
Who is LanguageTool for?
LanguageTool is designed for Individuals who want to improve their writing for personal or professional use; Students writing academic papers, bachelor, or master theses; Professional writers seeking advanced grammar, style, and punctuation checks.