Adobe BrowserLab is an online service that allows web professionals to test their websites on popular browsers and operating systems. Screenshots of actual browser renderings are generated in real time, with multiple viewing options to help pinpoint issues. Adobe provides integration with Dreamweaver CS4, and the free preview is currently available only to a limited number of users.
Currently, BrowserLab supports the following web browsers and operating systems:
Firefox 2.0 – Windows XP
Firefox 3.0 – Windows XP
Internet Explorer 6.0 – Windows XP
Internet Explorer 7.0 – Windows XP
Safari 3.0 – Macintosh OS X
Firefox 2.0 – Macintosh OS X
Firefox 3.0 – Macintosh OS X
The sad thing about BrowserLab is that it will eventually be released as a paid service. In the meanwhile, there are alternatives like Browsershots which remain free for low-priority usage.