If you are anything like me you have an office full of computers on which you keep various browsers to test rendering during development. On my machine I have IE7 and the latest Opera, Firefox, and Chrome. Once I am satisfied with these I move to the Mac with the latest Safari, Firefox, and Opera. Then I move to an older machine in the next office with IE6. Finally I run to the back office and check my Ubuntu machine with Opera and Firefox. As you can imagine I am eager to begin intra-office sprint stage of our development process with every project.
I have found a little tool that may help with this issue: IETester. As claimed on the website:
IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE8 beta 2, IE7 IE 6 and IE5.5 on Vista and XP, as well as the installed IE in the same process.



