How to run Internet Explorer and Firefox concurrently within Firefox browser

Most of the sites are still can be accessed only through Internet Explorer, that means if you are a Firefox user, you need to launch Internet Explorer browser and then switch between them from time to time.

So, for Firefox lover a new Firefox Add-on has introduce, named as IE tab, allows you to launch Internet Explorer tab within Firefox browser.

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IE Tab, an extension that embeds Internet Explorer in a Mozilla/Firefox tab.This is a great tool for web developers, since you can easily see how your web page displayed in IE with just one click and then switch back to Firefox.