Multiple Internet Explorer instances on one machine [duplicate]

Question

Possible Duplicate:
Running Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on the same machine

I am looking for a tool that can allow me to run Internet Explorer 6, Internet Explorer 7 (and Internet Explorer 8 if possible) on my machine. I found something on the Internet like this and some other interesting solutions, but I need your opinion based on experience. Which is the best choice for running multiple Internet Explorer instances from the point of view of a web-developer?

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Edit: thank you for the help, I installed some of the tools you suggested, and I decided to stick to those two: IETester and IE Collection - easy to install, intuitive UI and fast response time.

The others:

• xenocode just crashed or I couldn't install it properly.
• Multiple IE wanted me to install Microsoft .NET which took eternity and at the end, surprise...nothing worked. Then again it's probably my poor installing skills
• IE Application Compatibility VPC Image seems to be the most professional approach to the issue but I just liked IETester and IE Collection better.

Answer 1

Microsoft provides VPC virtual hard drives with various OS images and IE versions for just this purpose:

• Internet Explorer Application Compatibility VPC Image

Note that the OS installs are time-bombed so you have to periodically download new images from MS.

Answer 2

If you're on Windows you can try the new SuperPreview tool: http://download.microsoft.com/download/5/6/8/568F0D28-0434-4794-B7FC-FB293BCC98FB/SuperPreview_Trial_en.exe

Answer 3

I've used this:

http://tredosoft.com/Multiple_IE

This will get IE 6 going and earlier versions if that's a priority. Then you can just install IE 8 because it allows you to use IE7 "compatibility mode" so you can effectively mimic IE7.

Answer 4

You can install multiple versions of IE using this installer: http://finalbuilds.edskes.net/iecollection.htm