testing library focused on providing a simple, but effective, tool for testing your web applications in different browsers (via Selenium) and headlessly (via PhantomJS). It uses webdriver-http-sync in order to communicate (using the WebDriver protocol) with a Selenium server.
Con webdriver-http-sync only implements some of the Webdriver protocol methods
webdriver-http-sync is a synchronous HTTP implementation of the WebDriver protocol for Node.js. As of August 2015, the majority of the 97 WebDriver methods aren't yet implemented, for example "forward", "back" and "submit".
By comparison, WebdriveIO has implemented all JSONWire methods.