Entertainer aims to be a simple and easy-to-use media center solution for the Gnome and XFce desktop environments. Entertainer is written completely in Python using an object-oriented programming philosophy. It uses GStreamer's multimedia framework for multimedia playback. The user interface is implemented with the Clutter library, which allows sleek OpenGL animated user interfaces. Entertainer also uses other great projects like SQLite, pyIMDBb and iNotify.
Sage is a free open-source mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface.