gpppkill is a program for Linux that ends a ppp connection if it doesn't receive a minimal amount of bytes during certain time. It shows a bar plot according to the amount of bytes received per second. All resident ppp daemons are recognized and gpppkill lets you choose which one to kill. It is written in C++ using the GTK+ toolkit.
hardmon is a hardware monitor which includes indicators for temperature, voltage, and fan speed. It displays these indicators in a graphical panel. The default configuration allows you to monitor up to 3 temperatures, 3 fan speeds, and 6 voltages. This tool is particularly useful for multi-processor systems. The look may be changed by configuring the panel's pixmap and by altering the indicator positions.