Google offers helpful tools that are free to download:
Search smarter with instant suggestions, spelling corrections, and history as you type. Get warnings about web pages that may be unsafe. Check your spelling whenever you type in web forms. Automatically fill out forms for faster online shopping.
Google Earth - 3D Earth browser, Picasa - Photo organizer, Google Pack Screensaver - Photo screensaver, Google Desktop - Desktop companion, Google Toolbar for Internet Explorer