What is the difference between Selenium and Zelenium?

Selenium is a web automation framework that allows controlling browsers for testing web applications. It supports various browsers (Chrome, Firefox, Edge, etc.) and programming languages (Java, Python, C#, Ruby, etc.).

Zelenium is an extension (plugin) for Selenium Grid that adds screenshot comparison for web pages. It helps identify visual differences between the current page state and a reference image. Its main purpose is visual regression testing of UI.

Main difference:

• Selenium is the basis for browser automation.
• Zelenium is a visual regression testing tool that uses Selenium Grid.