Google Desktop
From The Unofficial Google Wiki
Google Desktop is Google's version of desktop search. It allows full text search of all of one's e-mail, computer files, music, photos, chat, and Web pages that one has viewed. Read more at Wikipedia.
Google Desktop 4 was launched at the second annual Google Press Day on May 10, 2006.
Google Desktop 4 lets you add Google Gadgets to your desktop. These include clocks, calendars, and other things you might want on your desktop, much like the Mac Dashboard Widgets.
