When comparing Mantis BT vs git-bug, the Slant community recommends git-bug for most people. In the question“What are the best self-hosted bug trackers?” git-bug is ranked 15th while Mantis BT is ranked 17th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
MantisBT is a free and open source bug tracker.
Pro Light
Really light and simple. Good for simple management.
Pro Free
Pro Bridges
git-bug has bridges with other bug-trackers, like GitHub, GitLab and Jira. Use it as your personal local remote interface. Sync with git bug bridge pull and git bug bridge push, work from your terminal or integrate it into your editor.
Pro Online / offline
Can be used online or offline.
Cons
Con Little integration
Supports little integration with code repositories, and CI servers
Con Too simple
Not powerful enough for complex management.
Con No documentation can be found in the installation files
The files that are included with the installer or the files that come out of the box after a fresh installation don't include any documentation.
Con Web UI beta
The Web user interface is still a work in progress.