Windows Sidebar and gadgets
This feature is included in the following editions of Windows Vista:
Gadgets are mini programs that give you information at a glance and provide access to frequently used tools. Windows Sidebar helps you to organize your gadgets.
Windows Sidebar
Windows Sidebar is a pane on the side of the Microsoft Windows Vista desktop where you can keep your gadgets organized and always available.
You can customize Windows Sidebar to suit your preferred location—always on top or resting below maximized windows.

Organize your gadgets in Windows Sidebar.
Gadgets
Gadgets are mini applications with a variety of possible uses. They can connect to web services to deliver business data, weather information, news updates, traffic maps, Internet radio streams, and even slide shows of online photo albums. Gadgets can also integrate with other programs to provide streamlined interaction.
Windows Vista comes with an essential set of gadgets to get you started, and you can also download more.
Download more gadgets
Windows Sidebar is all about personalizing your desktop. To get more gadgets that meet your needs, visit the Windows Vista Gadget Gallery.