htop is an enhanced version of top, the interactive process viewer, which can display the list of processes in a tree form. Comparison between 'htop' and 'top' * In 'htop' you can scroll the list vertically and horizontally to see all processes and full command lines. * In 'top' you are subject to a delay for each unassigned key you press (especially annoying when multi-key escape sequences are triggered by accident). * 'htop' starts faster ('top' seems to collect data for a while before displaying anything). * In 'htop' you don't need to type the process number to kill a process, in 'top' you do. * In 'htop' you don't need to type the process number or the priority value to renice a process, in 'top' you do. * In 'htop' you can kill multiple processes at once. * 'top' is older, hence, more tested. WWW: http://htop.sourceforge.net/