What are some alternatives?
BrowserStack - Test your website for cross browser compatibility on real browsers. Instant access to multiple desktop and mobile browsers. Get Free Trial.
browserling - Live interactive cross-browser testing from your browser.
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Ghost Inspector - Ghost Inspector is a browser testing tool that lets users test browsers on their own website or application. This software allows for tests to be automated, and data from completed tests is saved in the Cloud for future analysis.
CrossBrowserTesting - Browser Testing made simple! Run automated, visual, and manual tests on 1500+ real browsers and mobile devices. Test more browsers, in less time.
Endtest - Codeless Automated Testing, Powered By Machine Learning.