There are a couple of candidates, but all of them are either unstable, do not have the necessary features or have a horrible usability.
The ones I've already looked at are ) Pingdom.com ) Saucelabs.com ) Simpletest.io ) Browserstack.com *) and a few others that are not at all interresting
There are hundreds of testing frameworks out there, but all I've seen require at least an understanding of how to write code, which is great for us developers, but a nogo for others.
I couldn't even find a testing framework that gives you the ability to run your tests in very close to natural language. Anything out there you know?