Bugzilla is an open source project; it is a well known web based bug tracker and testing tool. It is an optimized, well structured and secure system. It has integrated email capabilities and a comprehensive permission based system. Its most widely used open source bug tracker app, the most recent verion Bugzilla 5.0, was released few days ago. According to the Bugzilla development team, this release is best and most exciting version of Bugzilla ever.