Selenium is an open-source framework used for automating web browsers. It is a powerful tool for web application testing and automating web-based tasks. The Selenium project is comprised of three main components:
- Selenium WebDriver: The core of the framework, it provides an API to interact with web elements, simulate user actions, and perform browser automation. It is the most widely used component today.
- Selenium IDE: A record-and-playback tool that’s available as a browser extension. It’s ideal for quickly creating and playing back simple test scripts without writing any code. With Selenium 4, it has been significantly improved and is now available for multiple browsers.
- Selenium Grid: A system that allows you to run your test scripts on multiple machines and browsers in parallel, drastically reducing test execution time.