Want quickly to test your web site’s design in a number of different browsers?   Adobe’s BrowserLab will get the job done.

While hardcore designers may rather test the real browsers in real running environments, this tool provides you a quick and easy way to check out your domain without having to install numerous browsers.  It does it all from the Web.  Right now you can test in:

• Firefox 2.0 – Windows XP or OS X
• Firefox 3.0 – Windows XP or OS X
• Internet Explorer 6.0 – Windows XP
• Internet Explorer 7.0 – Windows XP
• Internet Explorer 8.0 – Windows XP
• Safari 3.0 – OS X
• Safari 4.0 OS X

Another cool feature is the Onion Skin view, which will lay one browser preview over on top of another one, to give you a real side by side comparison between the two, to help you fix and glitches there might be.

So sign up and give it a shot at browserlab.adobe.com.

Bonus: Looking for an alternative? Check out BrowserShots.org!