Analysis of information sources in references of the Wikipedia article "Bugzilla" in English language version.
Bugzilla supports finer granularity for categories and keywords and over time we will adopt more of these, making it easier to filter bugs into specific target areas. It is now easy for multiple people to track a single bug, without having to have them assigned to custom mailing lists, add attachments to bugs, and so on. Many features that people expect from a modern bug tracker are simply not present in GNATS.
