I’ve earlier shared IE Collection, and online browser testing tools like Browsershots that allowed installing/viewing multiple versions of IE on Windows that help testing your Web Designs in different versions of IE.But If your are a Mac OS User, you can test your web designs across different versions of IE using Litmus.

Litmus is a advanced testing tool for web professionals using which you can run a browser test on the page you’re currently working on in Coda or TextMate with Alkaline plugin for Litmus.

Features :

1. Test across 17 different Windows browsers
2. See your page exactly as it renders
3. Keep track of design versions
4. Screenshots generated by Litmus’ testing grid

Supported Windows Browsers :

• Internet Explorer versions 5,5.5,6,7,8
• Firefox 1,1.5,2,3,3.5,
• Flock 1.5,2
• Google Chrome 2.0
• Netscape 9.0
• Opera 10.0,9.6
• Safari 4.0
• Sea Monkey 2.0 and 1.1

Mac OS X browsers

• Camino 1.6
• Firefox 3.5
• Safari 4.0 and 3.1

It can also show screenshots of your email newsletter as it looks across all major email desktop and web email clients.

With the free account a user is allowed 50 tests/month.

Download the Coda plug-in – Requires Coda 1.0 or later

Download the TextMate bundle – Requires TextMate 1.0 or later

Litmus requires Mac OS 10.5 or higher.