Firefox is a completely separate browser with numerous differences, including:
* More secure by nature.
* Does not support ActiveX by default.
* Supports theming for customization.
* Has thousands of extensions (addons) available for free to add whatever abilities to Firefox that you want.
* Much more customizable through the usage of about:config.
* A potable version an be run from a flash drive on any computer...take your work with you!
* Runs on multiple platforms, including Windows 98+, Mac OS X, and various Linux distros.
* Supports tabbed browsing for increased efficiency and decreased RAM usage. (Feature will be available in IE7.)
And the list goes on.
In short, Firefox is an alternative to Internet Explorer and one that is recommended for daily use due to security and performance advantages. However, Firefox is not yet a complete replacement to IE because some websites are still not compatible with browsers outside of IE.
Hope this helps,
John
Does anyone know what the difference is?? I seen that firefox was a download. Is there any difference between them? I am currently using windows xp incase that matters...

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