To summarize, Bugzilla has a good suite of features for bug tracking, customization, issue grouping, permissions control, etc. On the other hand, JIRA is a project management tool used to create, maintain and follow the development team’s activities, testing team and support proceedings and action items like development task progress, testing status, defect tracking, etc. Both the software tools can be put under the issue tracking category, but JIRA and Bugzilla vary a lot in their features and functionality, as seen above.