Bugzilla is a "Defect Tracking System" or "Bug-Tracking System". Defect
Tracking Systems allow individual or groups of developers to keep track of
outstanding bugs in their product effectively. Most commercial defect-tracking
software vendors charge enormous licensing fees. Despite being "free", Bugzilla
has many features its expensive counterparts lack. Consequently, Bugzilla has
quickly become a favorite of hundreds of organizations across the globe.

What Does Bugzilla Do?

- Track bugs and code changes
- Communicate with teammates
- Submit and review patches
- Manage quality assurance (QA)

Bugzilla can help you get a handle on the software development process.
Successful projects often are the result of successful organization and
communication. Bugzilla is a powerful tool that will help your team get
organized and communicate effectively.