EventChecker Extension for Google Chrome about GDG Events. Link to Install — https://chrome.google.com/webstore/detail/%D1%81%D0%BE%D0%B1%D1%8B%D1%82%D0%B8%D1%8F-gdg-omsk/fnhemkggpoojcneekdlkhgfffaibjcnf?hl=ru