LanguageTool is an Open Source proof­reading program for English, French, German, Polish, and more than 20 other languages.

It finds many errors that a simple spell checker cannot detect and several grammar problems.

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

License & Source Code

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

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