What is the difference between Selenium IDE, Selenium RC, and WebDriver?
There is a lot in details but broadly
Selenium IDE - It’s an add-on and it is supported by Firefox only. Selenium IDE allows to edit, record, and debug the tests
Selenium RC - This is an API and supported by all major browsers. It uses Selenium server. JS drives its core engine.
Selenium WebDriver - It is a full-fledged API, and languages like Java, Python, and CSharp implement Webdriver APIs. and is supported by all major Browsers.
Check out the below image for the differences