WebDriver

WebDriver:

WebDriver is a selenium 2.0 and it has all cool features like

1. Selenium-WebDriver makes direct calls to the browser using each browser’s native support for automation.
2. Selenium-WebDriver, drives the browser directly using the browser’s built in support for automation.
3. No need to start the server.
4. Works with higher versions of firefox.
5. Android and iPhone based testing.
6. We can do object extraction in Bulk.

WebDriver and Selenium Server:

You may, or may not, need the Selenium Server, depending on how you intend to use Selenium-WebDriver. If you will be only using the WebDriver API you do not need the Selenium-Server.. more