ZBar is a utility for those who use multiple monitors. If you have two or more monitors, then Windows only puts the task bar at the bottom of one of those monitors, and although you can move windows to the second monitor, the task bar button for those windows still lives at the bottom of the primary monitor. This doesn't "feel" right to me, so ZBar was born.
ZBar will :
Put a taskbar across the top or bottom of all non-primary screens with one or two rows of buttons, in six styles, with an optional clock
Provide keyboard shortcuts to move windows one screen along
Organise your desktop wallpaper one image per screen or one image across all screens
Display a six month calendar, last month, this month, and four months ahead