Trouble ticket express - Help desk software in Perl and CGI

It does everything from bug tracking and customer support to project management and to-do lists. It is light weight and web based as it is written in CGI. It has support for Ticket monitoring, Custom fields, Inventory Tracking, Custom fields, Email alerts, File attachments etc.

It has reporting and search functionality. It does have backup and restore functionality to migrate the data.

Demo: http://www.troubleticketexpress.com/trouble-ticket-demo.html