LanguageTool – Free AI Grammar & Writing Checker for 30+ languages

LanguageTool is an AI-powered, multilingual writing assistant and open-source software for spelling, grammar, punctuation, and style checking. It supports 30+ languages, offers advanced rephrasing, personal and team style guides, unlimited rephrasings, personal dictionary, and is available as a web

LanguageTool logo - Writing & Translation brand identity

LanguageTool

"Free AI Grammar & Writing Checker for 30+ languages"

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LanguageTool Writing & Translation showing ai writing assistant - Free AI Grammar & Writing Checker for 30+ languages

About LanguageTool

LanguageTool is an AI-powered, multilingual writing assistant and open-source software for spelling, grammar, punctuation, and style checking. It supports 30+ languages, offers advanced rephrasing, personal and team style guides, unlimited rephrasings, personal dictionary, and is available as a web app, browser extensions, API, and plugins for office suites like LibreOffice, Microsoft Word, and Google Docs.

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LanguageTool | Free Open Source Alternative to Grammarly

Additional Notes

It provides grammar, punctuation, style, and spelling checks. Users can also customize the tool to ignore certain rules or create their own rules.

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Deepen your understanding of the concepts behind tools like LanguageTool with our expert guides.

Comparing 4 AI tools.

Upvotes:
51
Avg. Rating:
4.0
Slogan:
Free AI Grammar & Writing Checker for 30+ languages
Pricing Model:
Freemium
Pricing Details:
Free plan with limited features and up to 20,000 characters per check; Premium personal subscription at €59.89/year (about $5/month), higher character limits and advanced corrections; Team option available with features for collaborative writing. No evidence of significant pricing changes or new pay-per-use or enterprise-only plans. All major options (Free, Premium, Team/Business) are captured.
Platforms:
Web App
Browser Extension
Target Audience:
Content Creators, Educators, Students, Remote Workers, Customer Service, Human Resources Professionals
Website:
Visit Site
Upvotes:
189
Avg. Rating:
4.0
Slogan:
Your AI communication partner for clear, effective writing
Pricing Model:
Freemium
Enterprise
Contact for Pricing
Pricing Details:
Free plan available. Pro is $30/month or $12/month (billed annually) per member. Enterprise plan with custom pricing (contact sales). No pay-per-use or one-time purchase options.
Platforms:
Web App
Browser Extension
Target Audience:
Content Creators, Students, Business Executives, Educators, Remote Workers, Customer Service, Marketing Professionals
Website:
Visit Site
Upvotes:
199
Avg. Rating:
4.0
Slogan:
Your all-in-one AI writing and paraphrasing assistant
Pricing Model:
Freemium
Enterprise
Pricing Details:
Free plan with limited features. Premium subscription: $19.95/month, $13.33/month (3-month, billed $39.95), or $8.33/month (annual, billed $99.95). Teams/Enterprise plans: require minimum 5 users, billed annually, starting at $89.95 per seat per year; volume discounts available. No pay-per-use or one-time purchase available.
Platforms:
Web App
Browser Extension
Target Audience:
Content Creators, Educators, Students, Marketing Professionals, Entrepreneurs
Website:
Visit Site
Upvotes:
401
Avg. Rating:
4.3
Slogan:
All the power of Canva’s AI, all in one place.
Pricing Model:
Freemium
Enterprise
Pricing Details:
Free tier available, Pro $15/month per user, Teams $10/month per user (min 3 users), Enterprise custom pricing—all USD
Platforms:
Web App
Mobile App
Target Audience:
Content Creators, Graphic Designers, Marketing Professionals, Entrepreneurs, Business Executives, Educators, Students, Remote Workers
Website:
Visit Site

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Make the Most of LanguageTool

Use this page as a starting point to evaluate LanguageTool alongside similar options. Our directory focuses on practical details that matter for adoption—capabilities, pricing signals, integrations, and real audiences—so you can shortlist with confidence and move from exploration to evaluation faster.

For a structured head‑to‑head, try the comparison view: Compare AI tools. To stay current with launches, model updates, and research breakthroughs, visit AI News. New to the space? Sharpen your understanding with AI Fundamentals.

Before adopting any tool, model your total cost at expected usage, verify integration coverage and API quality, and review privacy, security, and compliance. A short pilot on a real workflow will reveal reliability and fit quickly. Bookmark this site to track updates to LanguageTool and the broader ecosystem over time.

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How LanguageTool Works

Usage-based pricing keeps LanguageTool aligned with actual consumption. Finance teams pay only for the outcomes the organization really uses. Integrations with Plugin/Integration keep work connected.

Key Features & Capabilities

Translation accuracy

Translate content between dozens of languages while preserving tone and nuance. Integrations with Plugin/Integration keep work connected.

Developer-friendly API

Webhook and API support keep LanguageTool aligned with bespoke internal processes.

Client libraries available

Official SDKs handle authentication, retries, and error handling automatically.

Open-source transparency

Teams can inspect the codebase and adapt LanguageTool to specific environments.

Support & service excellence

Knowledge, automation, and collaboration help support teams maintain SLAs. Support leaders get knowledge, automation, and collaboration in one place.

Common Use Cases

Content Creators
Localize content globally

Teams use LanguageTool to translate product documentation, marketing materials, and support content. Integrations with Plugin/Integration keep work connected.

Content Creators
Streamline creative processes

Collaboration features keep stakeholders aligned throughout the creative process.

Content Creators
Scale support operations

Automated ticket routing ensures issues reach the right team member quickly. Support leaders get knowledge, automation, and collaboration in one place.

Pricing & Plans

Free plan with limited features and up to 20,000 characters per check; Premium personal subscription at €59.89/year (about $5/month), higher character limits and advanced corrections; Team option available with features for collaborative writing. No evidence of significant pricing changes or new pay-per-use or enterprise-only plans. All major options (Free, Premium, Team/Business) are captured.

Usage Model: Pay-as-You-Go — ensuring you only pay for what you actually use.

Frequently Asked Questions about LanguageTool

What is LanguageTool and what does it do?
LanguageTool is Free AI Grammar & Writing Checker for 30+ languages. LanguageTool is an AI-powered, multilingual writing assistant and open-source software for spelling, grammar, punctuation, and style checking. It supports 30+ languages, offers advanced rephrasing, personal and team style guides, unlimited rephrasings, personal dictionary, and is available as a web app, browser extensions, API, and plugins for office suites like LibreOffice, Microsoft Word, and Google Docs. Available on Web App, Browser Extension, LanguageTool is designed to enhance productivity and deliver professional-grade writing & translation capabilities.
How much does LanguageTool cost?
LanguageTool offers Freemium pricing options. Free plan with limited features and up to 20,000 characters per check; Premium personal subscription at €59.89/year (about $5/month), higher character limits and advanced corrections; Team option avai... You can start with a free tier to test the platform before committing to a paid plan. For the most current pricing details and plan comparisons, visit the official LanguageTool pricing page or contact their sales team for custom enterprise quotes.
Is LanguageTool secure and compliant with data privacy regulations?
LanguageTool takes data privacy seriously and implements industry-standard security measures. Data is hosted in Global, providing transparency about where your information resides. For comprehensive details about data handling, encryption, and privacy practices, review their official privacy policy. Security and compliance are continuously updated to meet evolving industry standards.
What platforms does LanguageTool support?
LanguageTool is available on Web App, Browser Extension. The web application provides full functionality directly in your browser without requiring downloads. This multi-platform approach ensures you can use LanguageTool wherever and however you work best.
How can I try LanguageTool before purchasing?
The freemium model gives you access to essential features at no cost, with premium capabilities available through paid upgrades. Testing the platform before committing ensures it meets your specific requirements and integrates smoothly with your existing workflows. Support for Over 20 languages including English, Spanish, French, German, and more. makes it accessible to global users.
What file formats does LanguageTool support?
LanguageTool accepts Supports text input in various formats including plain text, Microsoft Word documents, and Google Docs. as input formats, making it compatible with your existing files and workflows. Output is delivered in Delivers detailed error reports with suggestions for corrections to help users improve the quality of their writing., ensuring compatibility with downstream tools and platforms. This format flexibility allows seamless integration into diverse tech stacks and creative pipelines. Whether you're importing data, exporting results, or chaining multiple tools together, LanguageTool handles format conversions efficiently without manual intervention.
Who develops and maintains LanguageTool?
LanguageTool is developed and maintained by LanguageTool, based in Germany. Most recently updated in September 2025, the platform remains actively maintained with regular feature releases and bug fixes. This ongoing commitment ensures LanguageTool stays competitive and aligned with industry best practices.
How do I get access to LanguageTool?
LanguageTool is freely available to everyone without registration requirements. You can start using the platform immediately without going through lengthy approval processes.
How is usage measured and billed in LanguageTool?
LanguageTool uses Pay-as-You-Go as billing metrics. This usage model ensures you only pay for what you actually use, avoiding unnecessary overhead costs for features you don't need.
What deployment options does LanguageTool offer?
LanguageTool supports Cloud deployment configurations. Cloud-hosted options provide instant scalability without infrastructure management overhead. Choose the deployment model that best aligns with your technical requirements, security constraints, and operational preferences.
Who is LanguageTool best suited for?
LanguageTool is primarily designed for Content Creators, Educators, Students and Remote Workers. Content professionals rely on it for producing high-quality written content efficiently. Whether you need automation, creative assistance, data analysis, or communication support, LanguageTool provides valuable capabilities for multiple use cases and skill levels.
Are there video tutorials available for LanguageTool?
Yes! LanguageTool offers video tutorials including "LanguageTool | Free Open Source Alternative to Grammarly" to help you get started quickly and master key features. Video content provides step-by-step walkthroughs that complement written documentation, making it easier to visualize workflows and understand best practices. These tutorials cover everything from basic setup to advanced techniques, ensuring users of all skill levels can leverage the platform effectively. Visual learning materials are particularly helpful for onboarding new team members or exploring complex features that benefit from demonstration.
Does LanguageTool offer APIs or SDKs?
Yes, LanguageTool provides SDK support for Python, JavaScript/TypeScript. This enables developers to integrate the tool's capabilities into custom applications.
Is LanguageTool open source?
Yes, LanguageTool is open source, meaning the source code is publicly available for inspection, modification, and contribution. This transparency allows developers to verify security practices, customize functionality for specific needs, and contribute improvements back to the community. Open source projects often benefit from rapid innovation and community-driven development. LanguageTool maintains the project while welcoming community contributions. You can self-host the solution for complete control over your data and deployment environment.
Does LanguageTool receive regular updates?
LanguageTool is actively maintained with regular updates to improve features, security, and performance. LanguageTool continuously develops the platform based on user feedback and industry advancements. Updates typically include new AI capabilities, interface improvements, bug fixes, and security patches. Comprehensive API documentation is kept current with each release, making it easy for developers to leverage new features. Staying up-to-date ensures you benefit from the latest AI advancements and best practices in writing & translation.
What do users say about LanguageTool?
LanguageTool has received 2 user reviews with an average rating of 4.0 out of 5 stars. This solid rating indicates the tool meets or exceeds most users' expectations across various use cases. Additionally, LanguageTool has received 51 upvotes from the community, indicating strong interest and recommendation. Reading detailed reviews helps you understand real-world performance, common use cases, and potential limitations before committing to the platform.
Is the information about LanguageTool up-to-date and verified?
Yes, LanguageTool's listing was last verified within the past quarter by our editorial team. We regularly review and update tool information to maintain accuracy. Our verification process checks pricing accuracy, feature availability, platform support, and official links. If you notice outdated information, you can submit corrections through our community contribution system to help keep the directory current and reliable for all users.
How does LanguageTool compare to other Writing & Translation tools?
LanguageTool distinguishes itself in the Writing & Translation category through accessible pricing options that lower the barrier to entry. When evaluating options, consider your specific requirements around pricing, features, integrations, and compliance to determine the best fit for your use case.
How difficult is it to learn LanguageTool?
The learning curve for LanguageTool varies depending on your experience level and use case complexity. Video tutorials offer visual guidance that accelerates the onboarding process. Comprehensive API documentation supports developers who need to integrate the tool programmatically. Most users report becoming productive within a few days depending on their background. LanguageTool balances powerful capabilities with intuitive interfaces to minimize the time from signup to value delivery.
How often is LanguageTool updated with new features?
LanguageTool was most recently updated in September 2025, indicating regular maintenance and improvements. LanguageTool maintains a development roadmap informed by user feedback and market trends. Regular updates typically include performance optimizations, bug fixes, security patches, and new capabilities that expand the tool's functionality. Users can expect continued improvements as the product matures.
What support resources are available for LanguageTool?
LanguageTool provides multiple support channels to help users succeed. Comprehensive API documentation covers technical integration details, code examples, and troubleshooting guides. Privacy policy documentation explains data handling practices and compliance measures. Video tutorials demonstrate features visually for different learning preferences. LanguageTool typically offers additional support through email, chat, or ticketing systems depending on your plan. The combination of self-service resources and direct support channels ensures you can resolve issues quickly and maximize your investment in the platform.
Is LanguageTool a reliable long-term choice?
When evaluating LanguageTool for long-term use, consider several indicators: Development by LanguageTool provides organizational backing and accountability. Growing community interest indicates positive momentum. High user satisfaction ratings suggest the platform delivers on its promises. Recent updates demonstrate active maintenance and feature development. The open-source nature reduces vendor lock-in risks and enables community-driven continuity. Consider your specific requirements, budget constraints, and risk tolerance when making long-term platform commitments.
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