What is GeckoDriver Selenium?
Gecko is a browser engine developed by Mozilla Foundation and the Mozilla Corporation. It is used to power the Firefox browser and other applications. Between WebDriver-enabled clients and the Firefox browser, GeckoDriver acts as a proxy. GeckoDriver, in other terms, is a bridge between Selenium tests and the Firefox browser. It’s a proxy for interacting with Gecko-based browsers using W3C WebDriver-compatible clients.