LanguageTool is a proof­reading service for English, German, Polish, Russian, and more than 20 other languages.

LanguageTool identifies many grammatical and stylistic issues that a simple spell checker cannot detect.

 

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Please see our checklist if you experience problems. Download old releases or daily builds.

Pricing

Free Premium Enterprise
languagetool.org languagetoolplus.com languagetoolplus.com
Maximum characters per check 20,000 40,000 40,000+
Basic error detection for 20+ languages supported supported supported
Personal dictionary unsupported supported supported
More than 100 additional English errors detected unsupported supported supported
More than 100 additional German errors detected unsupported supported supported
Add-on for Firefox & Chrome supported supported supported
Add-on for Google Docs supported supported supported
Add-on for MS Word (details) unsupported supported supported
Price free
/month
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/year
you save 65%
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all prices incl. VAT

License & Source Code

LanguageTool is freely available under the LGPL 2.1 or later.
The source is available on github.

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