"Conky is a lightweight system monitor that provides essential
information in an easy-to-understand, highly customizable
interface. The software is a fork of TORSMO, which is no longer
maintained. Conky monitors your CPU usage, running processes,
memory, and swap usage, and other system information, and displays
the information as text or as a graph.
"Debian and Fedora users can use apt-get and yum respectively to
install Conky. A source tarball is also available..."