Witch lets you switch directly between applications not only (as can be done with Command-Tab), but Windows. Instead of switching applications first, then Windows, use Witch to change directly to the window you want. If you come to the Mac from Windows, you will find that Witch is a natural replacement for the ability of Windows to change directly to Windows.
• Witch got a very rare perfect five-mouse rating from Macworld: “… Witch is easily one of the most useful utilities on my Macs.”
You can even define global hotkeys for useful tasks such as dropping or close all minimized windows, or zoom in the front windows.