# LanguageTool

[LanguageTool](https://languagetool.org) is an Open Source proofreading software for English, Spanish, French, German, Portuguese, Polish, Dutch, and [more than 20 other languages](https://dev.languagetool.org/languages). It finds many errors that a simple spell checker cannot detect.

## Usage

To use a LanguageTool instance, you need to install and set up a client for it, such as browser extensions, e-mail addons, office plugins, and even apps!

After a client is installed, you can configure it to use your own LanguageTool instance by pointing it to the API’s URL: `https://languagetool.your-server.com/v2`

Here is a list of clients for LanguageTool:

- **Browser Extensions**: [Firefox](https://addons.mozilla.org/en-US/firefox/addon/languagetool/), [Chrome](https://chrome.google.com/webstore/detail/grammar-and-spell-checker/oldceeleldhonbafppcapldpdifcinji), [Safari](https://apps.apple.com/app/id1534275760), [Edge](https://microsoftedge.microsoft.com/addons/detail/hfjadhjooeceemgojogkhlppanjkbobc), [Opera](https://addons.opera.com/extensions/details/grammar-and-spell-checker-languagetool/)
- **E-mail Addons**: [Gmail](https://languagetool.org/google-mail), [Outlook](https://languagetool.org/windows-desktop), [Apple Mail](https://languagetool.org/apple-mail), [Thunderbird](https://languagetool.org/thunderbird)
- **Office Plugins**: [Google Docs](https://languagetool.org/google-docs), [Microsoft Word](https://languagetool.org/word), [Apple Pages](https://languagetool.org/mac-desktop), [OpenOffice](https://languagetool.org/open-office), [LibreOffice](https://languagetool.org/libre-office)
- **Apps**: [MacOS](https://languagetool.org/mac-desktop), [Windows](https://languagetool.org/windows-desktop), [iOS](https://languagetool.org/ios)

### n-grams

LanguageTool can make use of large “n-gram” data sets to detect errors with words that are often confused, like *their* and *there*.

The n-gram data set is **huge** and thus not part of the default configuration ([details](https://dev.languagetool.org/finding-errors-using-n-gram-data)). To make use of it, your server needs at least 20GB of free disk space per language. If it has enough free space, [contact us](https://etke.cc/contacts) and tell which languages you want to use n-grams for, so that we can configure the instance for you,

**Supported languages**: English, German, Spanish, French, Hebrew, Italian, Dutch, Russian, and Chinese.



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* [llms.txt](https://etke.cc/llms.txt): full site index in markdown