A mockup of a simple Application Manager for elementaryOS, designed to do only what I and all the people I've asked do with such an app.
That is, Check how much Memory/CPU is in use and to kill Apps that are misbehaving.
Most similar programs I looked at, Windows Task Manager, KDE System Monitor, Gnome System Monitor etc provide many options but I've never really many used them. If you need something ultra featured they exist, this is supposed to just be simple.
And following Pantheon Files recent shift away from double click, I decided to reduce the clicks needed to kill an app, previously you'd have to select the app you want to kill and then hit the "Kill" button. With this app you hover over an app which automatically selects the app revealing the kill button; Therefore Single Click Killer.
Upon Selecting (Via hover) an app the resources its consuming will show in yellow in the Global CPU and Memory usage bars at the top in relation to the resources used by everything else.