WinTabber
Well, at only 3mb it is a rather handy and free utility that I might make regular use of.
Check out the WinTabber website and see for yourself. WinTabber allows you to add any open windows/programs into a tabbed interface such as a tabbed web browser and makes it handy to switch between your open windows. Yea, you could use the taskbar, but eventually it groups ‘like’ windows together (if you have that turned on) or the windows themselves are squeezed so tightly because you run out of room (assuming you are a power user). I really like using WinTabber with several explorer windows, because it can become confusing switching between a few of the open windows in the taskbar.
Best of all… it’s free!
Oliver