Why selenium has an edge over other automation tools
Selenium is an open source set of libraries initially developed by thoughtworks. These libraries can be used with java, ruby, C#, perl and other programming languages to interact with web browser. Over the time, selenium has evolved and became a widely used automation tool attributed to the wide community base which contributed to its enhancement, maintenance and scalability. Thus selenium has gain an edge over other commercial tool available in the market. Getting started with selenium is easy and no commercial cost is involved for using selenium. It is free and easy to use.
Components of selenium are selenium:
RC
GRID
IDE
WEB DRIVER
GRID and WEB DRIVER are the most commonly used components of selenium these days. Selenium RC became obsolate and replaced by webdriver. In Selenium RC, there used to be a separate server which acts as an interface between browser and selenium commands. On the other hand in selenium webdriver, a specific browser driver is initialized and invoked by webdriver object and executes selenium command without having anything acting in between.
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