Hi James,
When we were building our new website the belief was that Vienna Studio would be ready for launch along side it. Vienna Studio is (will be) our test automation solution. Unfortunately there has been a delay on the release of this software until the end of the summer. All reference to this tool have been removed from our site for now.
For your information VSL stands for Vienna Scripting Language which is used by Vienna Studio for automation. For web automation VSL will utilise Selenium Server in the background. We will post more information on Studio nearer to its release date.
Regards,
NMQA Support
NMQA