There is no greek translation version of osTicket. Version 1.8.1 (forthcoming) will introduce stage 1 of the new multilanguage support and you can download language files at:http://osticket.com/download-edgeYou should probably read more about the language translation project at:http://forum.osticket.com/d/discussion//hello-habari-hallo-bonjour-hola-ciao#latest