I hear from Raj at Performancing there is a New Scribefire for Firefox (previously called Performancing for Firefox). Jed has been replaced by Chris Fincke who comments in the thread that he is a current Netscape developer, which is cool.
I’m glad the tool is still going, not out of any sense of loyalty to the old crew but because I use it daily.
From what I can tell Scribefire is PFF with more orange and a new name, but I expect once Chris settles in there will be more developments. You can download it from here.