TotalDesk is the only all in one helpdesk solution for WordPress. Including a ticket- & notification system, livechat, knowledge base, report and integration module it contains all support features, that you need. Get rid of single helpdesk plugins and get TotalDesk!
Demo: https://codecanyon.net/item/totaldesk/20502693
source http://www.codelist.cc/plugins/242903-totaldesk-v1714-helpdesk-knowledge-base-amp-ticket-system.html