All the trackers

Next, we will explore a selection of different issue tracker systems. They are all easy to try out before you commit to an actual deployment. Most are free, but some proprietary alternatives are also mentioned.

All the trackers mentioned here are present on the comparison page on Wikipedia at https://en.wikipedia.org/wiki/Comparison_of_issue-tracking_systems.

Since we can only explore a selection of issue trackers, the following were chosen because they exhibit differences due to different design choices. Bugzilla was designed for large-scale public-facing trackers. Trac was designed for simplicity and tool integration. Redmine as a fully featured project management tool with an issue tracker. The GitLab tracker was chosen for simplicity, and Git integration and Jira for usability.

We begin our issue tracker exploration with Bugzilla, since it is one of the earliest issue trackers and is still popular. This means that its flows are pretty mature since they have proven themselves...