LanguageTool Community beta

LanguageTool is an Open Source proofreading tool. This website lists LanguageTool's error detection rules and applies them to Wikipedia content for demonstration and testing purposes.


Browse Rules

LanguageTool uses rules to detect errors. Each rule represents a potential error in the text to check. Have a look at all rules of all languages here.

Check any Wikipedia page


Check Rules' Results

We use LanguageTool on Wikipedia data to test which rules work well and which need more work. If there's a real error you're encouraged to fix it in Wikipedia, but note that the check may not be up-to-date and the error may have been fixed already.

Random selection of LanguageTool results when run on Wikipedia:


  • Ați vrut să scrieți 817?: [Visit Rule]
    ...e. Transportul feroviar de călători se asigură cu un număr de 817 locomotive, din care mai mult de jumătate au vech...
    Login to vote · Visit Wikipedia
  • Pentru limba română se folosește simbolul .: [Visit Rule]
    ... speranța fac principiul oricărei idei religioase." (De Volney, Ruines). Pentru Kant declarația de c...
    Login to vote · Visit Wikipedia
  • Pentru limba română se folosește simbolul .: [Visit Rule]
    ...edința religioasă nu există o deosebire de esență." Și pe bună dreptate se afirmă asta, căci latura s...
    Login to vote · Visit Wikipedia
Other random examples · All matches · User votes

Visit the LanguageTool homepage to download LanguageTool as an extension for LibreOffice or OpenOffice.org