A website needs to be checked in different browsers as every visitor doesn’t have the same browser, and also if same, the version is not always the same. There are many browsers used like Internet explorer, mozilla firefox, opera and safari for mac(but this post is not helpful for those using mac as this tool does not work in Apple macbooks).

IE tab is a firefox extension which opens a web page in Internet explorer version, as a tab in firefox itself. You don’t need to have to open Internet explorer now to preview web pages.

Some known features as given by mozdev guys,

1. Toolbar button and statusbar icon:

• Left click: Switches the rendering engine for the current page
• Middle click: Switches the rendering engine in a new tab
• Right click: Pops up Option dialog (for adding the URL of the current page to the “always view in IETab” list)
• [Ctrl] + Left click: Same as middle click or Open Current URL in External Application.

2. Context Menu:

• On page: Switches the rendering engine for the current page
• On link: Switches the rendering engine in a new tab

It supports almost all languages that a normal internet explorer browser supports. 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.
And moreover, windows can be updated through firefox browser, there is no necessity of Internet explorer for the update.

Bad point for Mac users - It does not work in firefox of apple macbooks.
Download - The firefox extension can be downloaded from here.

Here are a few screenshots explaining about the IE tab extension -