Crosscheck Browserless Testing Framework
Crosscheck is an open source testing framework for verifying your in-browser javascript. It helps you ensure that your code will run in many different browsers such as Internet Explorer and Firefox, but without needing installations of those browsers. The only thing you need is a Java Virtual Machine.
This could be useful for a quick checkup but wouldn’t replace the real thing, which is a clean OS for each of the browser versions running on VMWare.