AppAway

AppAway is the easiest way to hide any program. The program will not appear on the screen, in the taskbar or when you alt+tab.
AppAway is EASY. Just drag the AppAway icon from the system tray onto the software you want to hide. It doesn't get much easier than that!
AppAway is SMALL, 72 kb. It's written in C++ without any resource hungry components, which means that AppAway is using as little system resources as possible.