SerLooK is a KDE application for inspecting data going over serial lines. It can work as a binary terminal that sends and receives data through a defined port (Point to Point mode) and displays them on separate views. Each view can be configured to display data in hexadecimal, decimal, octal, binary, and raw ASCII. It is also possible to perform I/O through terminal emulation views and define a secondary port and monitor the traffic between two external hosts using a "Y" cable (Snooper mode).
katimon is an unofficial ATI graphics card temperature monitor, fan regulator, and overclocking utility. It is a graphical front-end to the command-line aticonfig utility. Katimon monitors and controls supported ATI graphics cards. It can monitor temperature, fan speed, GPU speed and memory speed. It can automatically control fan speed by monitoring the temperature. It can also act as an overclocking utility for cards that support it. This utility only works with the proprietary fglrx driver.