MantisBT (Mantis Bug Tracker) is an open-source bug tracking system that helps teams track and manage software defects and issues. Allows teams to create, manage, and resolve issues, bugs, and tasks. Issues can be assigned to team members, and their status can be tracked from creation to resolution. Offers customizable workflows to suit different project needs, including the ability to define custom fields, statuses, and notifications. Provides role-based access control, ensuring that users have appropriate permissions. Includes user authentication and encryption features. Supports integration with various version control systems (like Git and SVN) and other tools through plugins, enhancing its capabilities.