LanguageTool

Most grammar checkers stumble when you're writing in anything other than English. LanguageTool breaks that pattern by offering intelligent grammar and style checking across more than 30 languages, from German and Spanish to Polish and Ukrainian. It works wherever you write — your browser, Google Docs, Microsoft Word, or email client — catching not just basic typos but also subtle style issues that native spell checkers miss. The tool is particularly valuable for multilingual professionals, international teams, and anyone who needs to write clean, professional content in multiple languages.

• Multilingual Support — checks grammar and style in over 30 languages, including less common ones that other tools ignore
• Universal Integration — works directly in your browser, Google Docs, Word, Outlook, and most writing apps without switching tools
• Style Suggestions — goes beyond grammar to suggest improvements for clarity, tone, and readability
• Personal Dictionary — learns your preferred terminology and stops flagging industry jargon or brand names you use regularly
• Team Features — lets businesses create style guides and maintain consistent writing standards across team members

• Proofread client emails and proposals in multiple languages without hiring native speakers
• Clean up blog posts and marketing copy before publishing
• Check academic papers and reports for grammar and style consistency
• Ensure professional communication standards across international team members
• Catch subtle errors in important documents before they go out
• Maintain consistent brand voice across different content creators
• Edit social media posts and newsletters for better engagement
• Polish presentations and pitch decks for investor meetings

• Write confidently in languages where you're not a native speaker
• Catch errors that basic spell checkers miss, including contextual mistakes
• Save time by getting corrections directly where you write instead of copying text back and forth
• Maintain professional credibility with error-free communication
• Reduce the cost of hiring professional proofreaders for routine content
• Improve your writing skills through detailed explanations of suggested changes

LanguageTool runs quietly in the background while you write. Install the browser extension or desktop app, and it automatically starts checking your text in supported applications. When you make a mistake, you'll see underlines appear — red for grammar errors, blue for style suggestions. Click on any underline to see the problem explained in plain language, along with suggested fixes you can apply with one click. The tool learns from your choices over time, becoming less likely to flag terms and phrases you consistently use. For team accounts, administrators can set up custom style rules that everyone follows automatically.

• Genuinely useful multilingual support that goes beyond basic translation
• Works seamlessly across most writing platforms without disrupting your workflow
• Provides clear explanations for corrections, helping you learn from mistakes
• Free version offers substantial functionality for casual users
• Regular updates and improvements to language models
• Respects privacy by processing text locally when possible

• Premium features require a subscription that can add up for individual users
• Sometimes overzealous with style suggestions, flagging acceptable writing choices
• Advanced features like plagiarism checking lag behind specialized competitors
• Can slow down performance in very long documents
• Learning curve for customizing personal dictionaries and style preferences

• Non-native English speakers who write professionally
• International businesses with multilingual communication needs
• Freelance writers and translators working across multiple languages
• Academic researchers publishing in foreign languages
• Marketing teams creating content for global audiences
• Small businesses that can't afford dedicated copy editors

LanguageTool offers a generous free plan that covers basic grammar checking with some limitations on the number of characters you can check per month. The premium version starts at $15.92 and removes these restrictions while adding advanced style suggestions, personal dictionaries, and team collaboration features. For what you get — especially the multilingual capabilities — the pricing feels reasonable compared to hiring professional proofreaders, though individual users might find the ongoing subscription cost adds up over time.

Users consistently praise LanguageTool's multilingual accuracy and the fact that it catches errors other tools miss. Many appreciate how it integrates smoothly into their existing writing workflow without requiring them to change apps. The main complaints center around the subscription cost for premium features and occasional false positives where the tool suggests changes to perfectly acceptable writing. International users and non-native English speakers tend to be the most enthusiastic, often saying it's become essential to their professional writing process.

Q: Does it work offline or does it send my text to servers?

LanguageTool processes basic grammar checking locally on your device when possible, but advanced features require an internet connection. Your text isn't stored permanently on their servers.

Q: How does it compare to Grammarly for non-English languages?

LanguageTool supports many more languages than Grammarly and tends to be more accurate for European languages in particular. Grammarly has stronger English-specific features.

Q: Can I use it with my company's style guide?

Yes, the business plans let you create custom rules and terminology lists that enforce your organization's specific writing standards across team members.

Q: Will it slow down my writing apps?

There's usually minimal impact on performance, though very long documents might see some slowdown. You can disable it temporarily if needed.

Q: Is the free version enough for occasional use?

The free version handles basic grammar checking well and includes several languages. You'll mainly need premium for unlimited checking and advanced style suggestions.

LanguageTool fills a genuine gap in the market for multilingual grammar checking. If you regularly write in languages other than English, or work with international teams, it's probably worth trying the free version to see how it handles your specific language needs. The premium subscription makes sense for professionals who write frequently and need the advanced features, but casual users might find the free version sufficient. Skip it if you only write in English and already have a grammar checker you're happy with — but for multilingual writing, it's hard to beat.