Ans : Sauce labs is a test automation solution over selenium available on cloud. This is one of the features with OpKey. OpKey is a complete, end to end test automation solution. It has integrations available with many test tools like selenium rc, webdriver, watir, QTP, RFT, soapUI etc. It comes into various editions like personal, team and BPT to support different testing needs of test teams. You do not require knowledge of any programming knowledge to use OpKey, but the same is not true with Sauce labs solution. OpKey Cloud provides you a solution to run your tests on a always ready and available test lab, which infrastructure management is not your headache. It makes available more than 100 browser OS combination to facilitate your test automation. OpKey also provides integrations with external tools of ALM, CI, and defect management.