The color temperature is set according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early morning, the color temperature transitions smoothly from night to daytime temperature to allow your eyes to slowly adapt.

BaseX is a very fast and light-weight, yet powerful XML database and XPath/XQuery processor, including support for the latest W3C Full Text and Update Recommendations. It supports large XML instances and offers a highly interactive front-end (basexgui). Apart from two local standalone modes, BaseX offers a client/server architecture.

jstest-gtk is a simple graphical joystick tester. It provides a list of attached joysticks, and for each one can display which buttons and axes are pressed, remap axes and buttons, and calibrate the device.

USBView is a small GTK+ application to show what the device tree of the USB bus looks like. It shows a graphical representation of the devices that are currently plugged in, showing the topology of the USB bus. It also displays information on each individual device on the bus.

qpdfview is a simple tabbed document viewer which uses the Poppler library for PDF rendering and CUPS for printing and provides a clear and simple Qt graphical user interface. Support for the DjVu and PostScript formats can be added via plugins.

configure-debian is a program which presents a list of packages which use Debconf, Debian's configuration management system.