Bugzilla is a web-based general-purpose bugtracker and testing tool originally developed and used by the Mozilla project, and licensed under the Mozilla Public License.
Bugzilla was originally devised by Terry Weissman in 1998 for the nascent Mozilla.org project, as an open source application to replace the in-house system then in use at Netscape Communications for tracking defects in the Netscape Communicator suite. Bugzilla was originally written in TCL, but Weissman decided to port it to Pearl before its release as part of Netscape's early open source code drops, in the hope that more people would be able to contribute to it, given that Perl seemed to be a more popular language at the time.
While the potential exists in the code to turn Bugzilla into a technical support ticket system, task management tool, or project management tool, Bugzilla's developers have chosen to focus on the task of designing a system to track software defects. Mandated design requirements include:
In practice, most Bugzilla projects allowing the public to file bugs—such as the Bugzilla bug database for Bugzilla itself—assign all bugs to a gatekeeper, whose job it is to assign responsibility and priority level.
QTP Course Details:-
BUG REPORTING IN BUGZILLA