When comparing Mantis BT vs Redmine, the Slant community recommends Redmine for most people. In the question“What are the best free bug-tracking tools for programming? ” Redmine is ranked 3rd while Mantis BT is ranked 8th. The most important reason people chose Redmine is:
Redmine is a free and open source tool.
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 and open-source
Redmine is a free and open source tool.
Pro Visually appealing and has high usability
Redmine's UI is very simple and easy to learn to use. It does not overwhelm users with many options and information at once.
Pro Built in Integration for GIT, SVN, & CVS
Pro Built In Wiki
Pro Plugins support
If there is additional features set you want you can find or write plugins to extend the ability.
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.