h2desk - PHP Help Desk
h2desk allows you to provide online support to your customers.

Customers can create tickets without having to go through a painful account creation process. Customers can also optionally create a user account to keep track of their tickets and contact information. Built-in knowledge base system allows your customers to find answers to common problems.

Support tickets can be created through a simple web interface and be imported from POP3 email accounts.

User management system allows staff to create new customer and staff accounts, modify help desk permissions, and view user statistics. Easily customize the look and feel of the help desk by editing style sheets and template files. Edit all emails sent out by the help desk. Generate extensive statistics for departments, users, peak usage times, and more.