It’s a crazy name for a very unique and useful Mac utility. All Macs these days come with screen sharing built right in. That means you can view and control a nearby Mac right from your Mac’s keyboard and screen. ScreenSharing Menulet makes it easy. From Dan Frakes of Macworld on screen share connections:
ScreenSharingMenulet aims to make such connections easier by providing a menu-bar menu that lists any computers on your local network with Screen Sharing (or Remote Management—aka, Apple Remote Desktop) enabled. Choose a computer from the menu and the Screen Sharing application launches and initiates a screen-sharing connection to the chosen computer.
9WR – ScreenSharingMenulet: Menu Bar utility makes Mac screen sharing simple, easy.