Welcome to LanguageTool

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Next Steps

  1. Create your free account

    What makes LanguageTool’s spelling and grammar checker stand out from the rest of the crowd? A lot.

    Sign Up for Free
  2. Install the browser add-on

    LanguageTool’s writing assistant can be even more helpful with a free browser add-on.

  3. Get LanguageTool for Desktop

    LanguageTool’s new App for macOS underlines and corrects errors right in all your favorite writing applications.

    Install LanguageTool for Desktop
  4. Upgrade your writing on the Go

    LanguageTool now works with all popular apps for iPhone and iPad.

    Install LanguageTool for iOS

Install the browser add-on

This is only the beginning. We’re working hard to support all your favorite writing apps. Stay tuned for updates.

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For macOS

LanguageTool for Desktop

Check Texts right in Apple Mail, Notes, and Messages.

For macOS

The Editor For macOS

Check and store your Texts in the Editor.

For iOS

Perfect Texts on the Go

Use the LanguageTool editor to write, correct and save texts for later. Start writing on your phone and finish on your Desktop.

Only with LanguageTool

Paraphrase and Optimize Your Texts

With LanguageTool’s built-in paraphrasing tool, you always find the right tone.

For Windows

The Editor for Windows

Write in a distraction-free environment without compromising on grammar or style.


Sync Across Devices

Check longer texts and store them for later with a free user account.

Integrates With Your Favorite Office Program

Get the best out of your docs and deliver error-free results, whether you’re working on a dissertation, essay, book, or you just want to note something down.

Text checking for LibreOffice & OpenOffice

* LanguageTool’s grammar check for OpenOffice requires Java 8. Currently not available for the Premium version. Problems installing it? Look here for help: Troubleshooting

Unleash the professional writer in you with LanguageTool Premium

Go well beyond grammar and spell checking, and impress with clear, precise and stylistically correct writing.

Learn more