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.

Clam AntiVirus is an anti-virus toolkit for Unix. The main purpose of this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon in the clamav-daemon package, a command-line scanner in the clamav package, and a tool for automatic updating via the Internet in the clamav-freshclam package. The programs are based on libclamav, which can be used by other software.

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.

GtkOrphan is a graphical tool which scans your Debian system, looking for orphaned libraries. It implements a GUI front-end to deborphan, but adds the package removal capability. A detailed documentation on the program can be found at: http://www.marzocca.net/linux/gtkorphan.html.