# LanguageTool LanguageTool is an Open Source proofreading software for English, French, German, Polish, Russian, [and more than 20 other languages](https://languagetool.org/languages/). It finds many errors that a simple spell checker cannot find. View https://languagetool.org for more information. Requires one port for comunication. Try `addr:port/v2/check?language=en-US&text=this+is+a+test` to test