4 ms·Firefox Inside Firefox Inside Firefox Inside Firefox1 points by jmonegro 17y agoEnter chrome://browser/content/browser.xul in a Firefox address bar. And you'll have Firefox inside Firefox! A bit old, but nice for those who have not seen it.andhapp 17y agoCool....mahmud 17y agocross-instance testing!duskwuff 17y agoIf this were Reddit, I'd be making a "yo dawg" joke right about now. But it isn't, so just pretend I said something anodyne about XUL or something.