Hello!

We are a small research group and have a portal for the research
community. We are looking for informaiton about software testing labs
who could test this portal on different operating systems (Windows 98,
NT, 2000, XP etc.) and browsers (Netscape, I.E., Opera - different
versions).

Would be interested in such service providers within the country
(U.S.) and off-shore as well.

Thanks.

Hi! Thanks for the question.

I was able to find the following directories for software testing services.

Google Directory
http://directory.google.com/Top/Computers/Software/Testing_Services/

Dmoz.org
http://dmoz.org/Computers/Software/Testing_Services/

Software Testing Institute Members
http://www.softwaretestinginstitute.com/stivend.html

Search terms used:        
Software Testing services list 
            
I hope these links would help you in your research. Before rating this
answer, please ask for a clarification if you have a question or if 
you would need further information. 
            
Thanks for visiting us.             
            
Regards,             
Easterangel-ga             
Google Answers Researcher