If you’re a developer, have you considered contributing to LanguageTool? We have collected some easy tasks to get you started: Issues · languagetool-org/languagetool · GitHub
Just fork us on github, fix an issue, and send a pull request. We’re here to help you if you have any questions.
If you’re not a developer: we’re constantly looking for language maintainers. What does that mean? We’ve documented that at Tasks For Language Maintainers - LanguageTool Wiki