| It is an Open Source |
It is a commercial tool |
| Using Bugzilla might be little complicated for few due to grouping users and granting permissions |
For some using JIRA would be more convenient than Bugzilla |
| Bugzilla allows you to show/hide the whole custom field or specific values based on the value of some other field |
JIRA enables conditional configuration based only on Type fields and Project. |
| Bugzilla’s has a powerful advanced search option |
JIRA lacks advance-level search options. JIRA has a flexible JQL language (JIRA Query Language). It enables you to build arbitrary boolean expressions. |
| Unlike JIRA, Bugzilla allows users to select the initial status of a new issue. |
Unlike Bugzilla, JIRA enables you to define multiple workflows which are applied based on the issue’s Project and Type. |
| Bugzilla has only one link type: Blocks/depends and a Bug ID custom field |
JIRA has configurable link types with user-defined semantics. JIRA enables to link an issue to any other entity outside JIRA. |
