Mantis Bug Tracker is a free and open source, web-based bug tracking system. The most common use of MantisBT is to track software defects.
License: Open Source
Mantis Bug Tracker is primarily focused on issue tracking and bug reporting with a highly customizable interface, making it suitable for various projects. In contrast, Pivotal Tracker is designed for agile project management, emphasizing collaboration and backlog management, which makes it ideal for software development teams.