amor an acronym which stands for Amusing Misuse Of Resources. It is an animation which sits on top of your active window. In its default, amor takes the form of a yellow spot which performs many tricks. amor also has many different themes which change the appearance and behavior of the animation.
Since amor works with the Kde window manager Kwin, the application will only work from within Kde. It is possible that amor work from within another Kde-compliant window manager, but none are known to work at the time of this writing