Go into a root term and type in ps -A. It will list all the stuff that is running. If it goes off the screen type this: ps -A | less . Then use the space bar for another screen. When done hit 'q' for quit.
If you want to kill a prog type in killall <prog name>. It will die.
If you want a GUI version use something like KDE system guard. highlight the app and click 'kill'.
Rats, I was beat by gill1109. I need to learn to type faster.