1. Mozilla bug tracking system Bugzilla is a web-based tool that lets you: * report bugs * assign bugs to the appropriate developers * prioritize bugs * set bug dependencies * arrange bugs by product and component With these features, you can also use Bugzilla as a to-do list manager. Bugzilla is a web application that lets users report and look up existing bugs. Changes made to a bug's status are automatically sent to users concerned with it. From Debian 3.0r0 APT