Add-ons are programs that add features to a web browser or change the way it works. If you've ever wished Internet Explorer could do something new or differently, chances are there’s an add-on out there that will fulfill your wish.
to get 5 Best add-ons click following link:
http://windowshelp.microsoft.com/Windows/en-US/Help/6D1CD022-C6CF-41FA-8C77-E6A5A0F4321E1033.mspx
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