[escap]

Selenium IDE was discontinued due to the change of extension (from XPI to WebExtension) in Firefox. Nothing to do with Chrome Headless.

see https://seleniumhq.wordpress.com/2017/08/09/firefox-55-and-s... and associated HN discussion https://news.ycombinator.com/item?id=15061605

[tw21]

Plus, there are already new IDEs showing up, for example https://chrome.google.com/webstore/detail/kantu-browser-auto...