TestRail’s web-based test case management is used by thousands of great QA and Development teams to efficiently organize, track and manage software testing.
CrossBrowserTesting - Browser Testing made simple! Run automated, visual, and manual tests on 1500+ real browsers and mobile devices. Test more browsers, in less time.
PractiTest - PractiTest is a cloud based Innovative test management tool.
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.
TestLink - Test & requirements management
Browsershots - Browsershots makes screenshots of your web design in different browsers.