Grammarly
Grammarly is an AI-powered writing assistant that helps you create clear, mistake-free, and effective communication across all your favorite desktop applications and web-based platforms.
LanguageTool
LanguageTool is a multilingual writing assistant that provides advanced grammar, style, and spell checking across multiple platforms to help you create professional, error-free content in over 30 languages.
Quick Comparison
| Feature | Grammarly | LanguageTool |
|---|---|---|
| Website | grammarly.com | languagetool.org |
| Pricing Model | Freemium | Freemium |
| Starting Price | Free | Free |
| FREE Trial | ✘ No free trial | ✘ No free trial |
| Free Plan | ✓ Has free plan | ✓ Has free plan |
| Product Demo | ✓ Request demo here | ✘ No product demo |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2009 | 2003 |
| Headquarters | San Francisco, USA | Potsdam, Germany |
Overview
Grammarly
Grammarly is your personal AI writing partner that works wherever you do, from emails and documents to social media and messaging apps. It goes far beyond basic spell check by analyzing your tone, clarity, and engagement to ensure your message lands exactly how you intended. You can fix complex grammatical errors, adjust your writing style for different audiences, and even generate entire drafts or outlines using integrated generative AI features.
Whether you are a student polishing an essay, a professional drafting a high-stakes proposal, or a team maintaining a consistent brand voice, the platform provides real-time feedback to improve your communication. It integrates directly into your workflow via browser extensions, desktop apps, and mobile keyboards, making it easy to maintain high writing standards without switching between different tools.
LanguageTool
LanguageTool is an intelligent writing assistant designed to help you polish your text across more than 30 languages. Whether you are drafting an email, writing a thesis, or posting on social media, it identifies complex grammar errors, spelling mistakes, and stylistic inconsistencies that standard spell checkers often miss. You can use it to improve your tone and clarity instantly through its AI-driven rephrasing suggestions.
The platform is built for everyone from students and freelancers to professional writers and corporate teams. It integrates directly into your existing workflow through browser extensions, office plugins, and desktop apps, ensuring your writing remains professional wherever you work. You can start for free to catch basic errors or upgrade to the premium version for advanced style checks and team collaboration features.
Overview
Grammarly Features
- Real-time Grammar Check Catch spelling, punctuation, and complex grammatical errors instantly as you type in your browser or desktop apps.
- Tone Detection Understand how your message sounds to readers so you can adjust your delivery to be more professional or friendly.
- Generative AI Assistance Draft content, rewrite paragraphs, and brainstorm ideas quickly using AI prompts tailored to your specific writing goals.
- Clarity Suggestions Identify wordy sentences and passive voice to make your writing more concise and easier for your audience to follow.
- Plagiarism Detection Check your text against billions of web pages and ProQuest databases to ensure your work is original and properly cited.
- Custom Style Guides Create a consistent voice for your entire organization by setting specific rules and terminology for your team to follow.
LanguageTool Features
- Multilingual Support. Check your grammar and spelling in over 30 languages, including English, Spanish, German, French, and Portuguese, with one tool.
- AI-Powered Rephrasing. Rewrite entire sentences instantly to change your tone, improve flow, or make your writing more formal or concise.
- Style and Tone Picks. Receive suggestions to remove wordiness, avoid clichés, and maintain a consistent professional tone throughout your entire document.
- Personal Dictionary. Add unique terms, brand names, or technical jargon to your own dictionary so the checker ignores them in the future.
- Browser Extensions. Fix your writing directly in Gmail, LinkedIn, and millions of other websites without ever leaving your browser tab.
- Picky Mode. Enable advanced checks for subtle punctuation issues and complex stylistic nuances to achieve a higher level of writing precision.
Pricing Comparison
Grammarly Pricing
- Basic writing suggestions
- Spelling and grammar checks
- Punctuation corrections
- Tone detection
- 100 AI prompts per month
- Everything in Free, plus:
- Full-sentence rewrites
- Vocabulary enhancements
- Plagiarism checker
- 1,000 AI prompts per month
- Tone suggestions
LanguageTool Pricing
- Basic grammar & spelling checks
- Up to 10,000 characters per field
- Limited AI rephrasing
- Browser extensions
- Basic punctuation checks
- Everything in Free, plus:
- Up to 150,000 characters per field
- Advanced style & tone suggestions
- Microsoft Word & Google Docs add-ons
- Windows & Mac desktop apps
- Enhanced AI rephrasing options
Pros & Cons
Grammarly
Pros
- Works across almost every website and app
- Highly accurate grammar and punctuation corrections
- Intuitive interface that stays out of your way
- Tone detector helps prevent communication mishaps
- Generous free version for basic proofreading
Cons
- Premium subscription is relatively expensive
- Occasional lag in very long documents
- AI suggestions sometimes miss specific context
- Plagiarism checker only available in paid tiers
LanguageTool
Pros
- Exceptional support for multiple languages beyond English
- Clean and distraction-free web editor interface
- Privacy-focused approach compared to other assistants
- Accurate detection of complex punctuation errors
- Seamless integration with most popular web browsers
Cons
- Character limits on the free version are restrictive
- Premium monthly pricing is relatively high
- Occasional false positives in highly technical text