All of these projects work with the Roundup Issue Tracker.
Roundup is a simple-to-use and -install issue-tracking system with command-line, web, REST, XML-RPC and e-mail interfaces. It is based on the winning design from Ka-Ping Yee in the Software Carpentry “Track” design competition back in 2000.
It is designed to be customised so you can “track your issues your way”.
It runs with Python 2.7.12+ or 3.6+.