arp-scan is a command-line tool that uses the ARP protocol to discover and fingerprint IP hosts on the local network. It is available for Linux and BSD under the GPL licence

This package contains the lsusb utility for inspecting the devices connected to the USB bus. 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.

KAlgebra is a algebraic graphing calculator with support for 3D graphing and MathML markup language.

A simple, small and lightweight guitar/bass tuner for jack. Gxtuner comes with a analogue like interface (scale), show the tune (char) and the accumulated frequency (Hz).