Whenever we are offered another nice major release of Firefox, I always fear, certain extensions won’t run any more and I have to find replacements for them. Now, when 3.6 and it RCs got released, there were a couple of weeks of big uncertainty (at least for me), during which I really didn’t know, whether these extensions would follow this release step.
There is Sage, the lightweight RSS and Atom feed reader, (article on wikipedia (I just updated it), its home page). If you follow more than two or three feeds, what other tool can you actually use? I hope, its developers will never abandon this very nice piece of software.
There is “Live HTTP headers” (aka “LHH“), an extension for tracing the HTTP protocol traffic between you browser and the HTTP servers you are talking to. It has a mozdev home page.
This is a Firefox extension intended to be used by software developers.
There are also extensions to this extension like LHHreplay.
There is an extension to Microsoft’s IE by the name of ieHTTPHeaders, that is rather similar to LHH.
I heavily depend on both of them (LHH and ieHTTPHeaders), as I use their trace files in order to generate (raw) perl scripts from them to mechanize web server accesses.
I started several years ago with several such projects to run a lot of my daily tasks, tasks like downloading market data or downloading bank account statements. And I add a few such scripts every year. Just recently I created a script to download the call record from my telephone+Internet router, an AVM fritz box.
A couple of weeks ago, there was a chap from Microsoft, who told me, he wanted to try my software for personal use. After I sent him my software, I never heard from him again.
Maybe my software is just too bad read and too ugly (a colleague of mine (a rather ego-centric guy) keeps saying so), but maybe he is just not very polite.