Служба поддержки Focus - Active App And Clock

What Focus does, is show you the active application's icon. Because its function is that simple, I've thrown in the usual junk of customizability: size, transparency, position on screen and window layering can all be adjusted to your needs.

You can have a small icon in the bottom-left of your screen telling you which application is active, or a giant transparent icon on your desktop to make your work environment somewhat more, eh, dynamic.

Focus is ideal to put in your Login items in your System preferences. Focus doesn't appear in the dock, and stays clear of it if you change resolutions or move the dock. Apart from nine standard screen positions you can drag Focus anywhere to be just there where you see it but doesn't get in the way.

Focus has its own preferences window which is shown as soon as you click on its big icon. You can quit Focus from its contextual menu (control-click on the big icon), or by using the quit button in the preferences window. Did you set Focus to auto-hide under the mouse? Hold control to prevent it from hiding temporarily.