For a more professional definition, TwitterFox is a Firefox extension that notifies you of your friends’ tweets on Twitter. This extension adds a tiny icon on the status bar which notifies you when your friends update their tweets. Also it has a small text input field to update your tweets.

I’ve been using it for more than a month now and it’s really one of the easiest way to get updated to your friends tweets. So if you are a twit, might as well try to download Twitterfox!

For more information in using it, check this link out.