Customer Support, Incident Tracker, Ticket and HelpDesk System Hosting Solutions -

osTicket osTicket is a widely-used open source support ticket system
HESK Hesk is Free PHP Help Desk Software that runs with a MySQL database
Open Web Messenger Web Messenger is an open-source live support application written in PHP and MySQL
Help Center Live Help Center Live is a Live Support tool written in PHP
phpOnline phpOnline is a live customer support system
iQDesk iQDesk is a unique software specifically designed for freelancers, small and any type of one-person-business
Crafty Syntax Crafty Syntax Live Help (CSLH) is an open source live support solution
Trellis Desk Trellis Desk is a powerful and robust help desk solution for your business.
Live helper chat Live helper chat is Free & Flexible & Open source - Live Support chat for your website.
Vision Helpdesk Vision Helpdesk is a Web-Based True Satellite Helpdesk Software that allows you to manage support for Multiple Companies at one place.
ExoPHPDesk ExoPHPDesk is a free php helpdesk software
phpMyFAQ phpMyFAQ is an open source FAQ system using PHP
Maian Support Maian Support is a FREE support ticket system written in PHP/MySQL.
HelpDEZk HelpDEZk is a powerfull software that manages requests/incidents.
Support Incident Tracker Support Incident Tracker (or SiT!) is a Free Software/Open Source (GPL) web based application which uses PHP and MySQL for tracking technical support calls/emails.