IETester
Posted by Steve Pietrek on April 2, 2008
“IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE8 beta 1, IE7 IE 6 and IE5.5 on Vista and XP, as well as the installed IE in the same process.”
Still alpha so there may be some limitations. It seems to work in my Windows Server 2003 VM too but I have not done tons of testing.
Thanks to help.net for the find.
