Tip #116 – Personalize Your Desktop with Gadgets and Widgets
A host of free “mini-apps” are available to personalize your computer workspace for fun and productivity, and to gather your frequently-used information resources in one spot. In Macintosh OS X, these are called “dashboard widgets”, in Yahoo they are “widgets”, in Windows Vista they are “sidebar gadgets” and in iGoogle they are simply “gadgets”. Since there is no universal format for widgets/gadgets, a widget designed for Mac’s OS X Dashboard won’t work in iGoogle or Vista, or vice versa. However, there are options for converting Google gadgets to Dashboard or Vista Sidebar formats.
How to Add Widgets to Mac OS X Tiger Dashboard; Apple Downloads – Dashboard Widgets
How to Create and Share Your Own iGoogle Gadgets
Personalize Windows Vista Sidebar
Yahoo! Widget