I manage the WebDriver work at Mozilla making Firefox work with Selenium. I can categorically State we haven’t killed Selenium. We, over the last few years, hav

I manage the WebDriver work at Mozilla making Firefox work with Selenium. I can categorically State we haven’t killed Selenium. We, over the last few years, have invested more in Selenium than other browsers. Selenium IDE no longer works in Firefox for a number of reasons; 1) Selenium IDE didn’t have a maintainer 2) Selenium IDE is a Firefox add on and Mozilla changed how adding worked. They did this for numerous security reasons.