Matthew van Eerde said:
None because I'm using a 64-bit build of the browser.
Firefox addons are typically platform and architecture independent; the majority of add-ons should work on a 64-bit build of Firefox with no changes.
* Personal Menu
* Nightly Tester Tools (although I don't actually really test nightlies much anymore, it's helpful during beta cycles).
I don't normally block ads, but I have started blocking Flash on any machines I use on a regular basis-- mostly for performance reasons (I started blocking Flash because of one specific performance-killing ad that was running all over the place) but it
has the added benefit of protecting me from most Flash zero-day exploits (because I'm not going to click to activate Flash on a site I don't trust).
Otherwise, I don't run much in the way of add-ons; the browser's default feature set is enough for me. Firebug's just there for the occasional play with CSS or HTML, and Glasser and Personal Menu are there to make Firefox fit in a little better into Windows
7 (Glasser extends the glass frame into the navigation bar like IE, and Personal Menu hides the menu bar (and replaces it with buttons I have placed in the Bookmarks bar). I won't need these, either, once the redesigned Firefox 4 is released (still a ways