Что такое селен в языке программирования

что такое селен

- Selenium is a set of libraries that help us automate and interact 
  with the browsers.
  
  Why Selenium?
  - OPEN SOURCE -> FREE
    - It supports different types of browsers
    - It supports multiple different programming languages
    - Huge community behind it so many answers to any problems/questions
    - Could run on different OS systems such as: Mac, Windows, Linux etc.