This documentation previously located on the wiki You can read more about geckodriver. About Firefox driver is included in the selenium-server-stanalone.jar available in the downloads. The driver comes in the form of an xpi (firefox extension) which is added to the firefox profile when you start a new instance of FirefoxDriver. Pros Runs in a real browser and supports Javascript Faster than the InternetExplorerDriver Cons Slower than the HtmlUnitDriver Important System Properties The followin...