An open source issue management & help desk solution
Free self-hosted help desk & shared mailbox
UltraVNC: Remote Access Tools VNC/RFB Remote Desktop Support Software
The Free & Popular HESK Web Based Software in Complete Virtual Machine
Car Sales Management System, Vehicle Sales Management in Codeigniter
Free tools for helpdesk and security admins
B1ST PHP Ticket System comes with reach features
COSST is a completely free open source support ticketing system.
Web Application used to manage clients, create invoices, timesheets