PolicyKit-gnome provides a D-Bus session bus service that is used to bring up authentication dialogs used for obtaining privileges.

CuteMaze is a simple, top-down game in which mazes are randomly generated using one of a choice of several different algorithms. You move the character through the maze while hunting for targets (cheese, by default) - the game is won once all of these targets have been picked up.

Rygel is a home media solution that allows you to easily share audio, video and pictures, and control of media player on your home network. In technical terms it is both a UPnP AV MediaServer and MediaRenderer implemented through a plug-in mechanism. Interoperability with other devices in the market is achieved by conformance to very strict requirements of DLNA and on the fly conversion of media to format that client devices are capable of handling.

qrq is an open source morse telegraphy trainer for Linux and Unix operating systems, similar to the classic DOS version of Rufz by DL4MM.