Firefox supported pipelining, but as far as I remember, that setting was always disabled by default, and you had to manually enable that through about:config. I

Firefox supported pipelining, but as far as I remember, that setting was always disabled by default, and you had to manually enable that through about:config. It was a very common performance tip, and there were even some extensions[1] that enabled that for you, but the usage was still limited to only a small group of power users. [1] http://fasterfox.mozdev.org/ http://fasterfox.mozdev.org/