Trac is a popular, open-source issue tracking and project management tool. It is written in the Python programming language, and it is used by many large organizations, including the Apache Foundation, Mozilla, and Ubuntu. Trac has a number of features that make it an attractive tool for managing software projects. It has a simple, yet powerful, issue tracking system that can be used to track bugs, feature requests, and other development tasks. Trac also supports a wide variety of plugins, which can be used to extend its functionality. In addition, Trac has a built-in wiki and support for version control systems such as Subversion and Git.