Mantis Bug Tracker is a popular web-based tool for tracking bugs. It is written in the PHP scripting language and supports working with a web server and the most popular databases, such as MySQL, MS SQL, and PostgreSQL. Mantis Bug Tracker can be installed on Windows. Using it you could start managing your projects while effectively collaborating with your team members and clients. After the change to issue has been made, MantisBT is able to send you an e-mail notification. Those notifications are easily and precisely configurable. One could set filters to define the minimum severity of issues to receive notifications about. Users also have the ability to explicitly subscribe only to issues affecting them directly.