Katak support
Katak-support is an online help desk software solution for handling client requests through a web based support ticket system. It is PHP-based and can receive tickets via email (pop3/pipe) or a web form. It also offers a ticket manager with many features. An ideal, easy to use and install helpdesk solution for any website. Katak-support offers many features, can be customized in many ways and can be easily skinned to the look and feel of your website.
Download
http://www.katak-support.com/en/content/download
Extract Zip file move to /var/www
go to web browser
Need to add DB info on php file refer installation time.
TECH INFO 