MantisBT

MantisBT is a popular, web-based bug tracking system that is specifically designed for issue management. It is lightweight, easy to install, and provides a straightforward interface for reporting and tracking bugs. Unlike general project management tools, MantisBT is laser-focused on the bug lifecycle, offering features like email notifications, custom fields, and version control integration. It is an excellent choice for teams that want a dedicated, no-nonsense bug tracker without the overhead of a full project management suite.