• Bugzilla and JIRA are the prominent bug/ issue tracking tools, which are in use by a number of organizations. However, JIRA has been reviewed as user-friendly, while Bugzilla has been termed as complex.
• JIRA has configurable link types with user-defined semantics. It has pluggable remote issue links allowing the links to other entities outside of JIRA. Bugzilla though has one link mode that is blocks and a Bug ID custom type field.
• Bugzilla can allow the users to select the initial status of a new problem/ bug. JIRA though provides for the definition of several workflows that can be applied according to the Project and Type of the issue.
• JIRA does not have an advanced level search option. It has flexible JQL language known as the query language allowing the user to construct arbitrary Boolean expressions. Bugzilla has a powerful advanced search option.
