Quality is delighting customers
It can be downloaded from http://www.bugzilla.org/ . Same site has also the installation instructions, see http://www.bugzilla.org/docs/4.4/en/html/installing-bugzilla.html .
The installation procedure varies depending upon the Operating System. You can refer to the relevant section of the Official Documentation.Bugzilla is an important tool in software testing, Here are the links for the current releases of Bugzilla: