htop, an interactive process viewer for Linux. It is a text-mode application (for console or X terminals) and requires ncurses.
Download htop packages from the following Url.
RedHat/CentOS : http://packages.sw.be/htop/
Fedora: yum install htop
Debian/Ubuntu : http://packages.debian.org/search?keywords=htop (OR) use "apt-get install htop" to install htop.
htop terminal view:

Enjoy
