RT Requet Tracker – free help desk software
RT (Request Tracker) is a free, open source help desk software. This free help desk software is very well in handling email ticket and it’s has a web based interface which allow support team to access the ticket anytime anywhere. After testing the RT ticketing software, i found the most powerful part of this ticketing system is that support staff can reply and update ticket fully via email without logging into the web interface. Furthermore, it also allow administrator to create custom field that is needed by your organization!