Rated 5 out of 5 stars
This was a great add-on and it was very convenient to use. With one click you could see what the page would look like in Internet Explorer without the need of ever actually using.
Hopefully this will get updated with newer versions of Firefox by the developer, because apparently it shows only a black screen shows when you use it in 3.6. PEOPLE hacking the 'Install.rdf' (or overriding compatibility) DOES NOT WORK!!
Anyway, it was sad to see an actively developed project suddenly stopped. I know the people here who said that this was better than Coral IE tab, but in the last few updates of that add-on, it works perfectly in Firefox 3.6 and above and you could make it function like the old IE tab (in the classical mode option). You could install the Coral IE tab add-on at (Note: the one at AMO is an older version, the one that people have problems with, so you have to download from the homepage, or look at "View all Versions" on AMO to get the latest version.)
Thanks for the great add-on and update it if you can.