autocopy: Annoying thing especially when youre using cryptload...i used it one time and never again
Firebug: very usefull...very...
FireFTP: i used it and i like Filezilla more
Greasemonkey: kids tool, after 2 week of use you dont need it anymore (i used it 1 week though)
Scrapbook: has opera
Tab Mix Plus: has opera
Downthemall: opera has a download manager
Foxmarks: i dont see the sense, only if you have 3 or more computer, or surf while your working, what is actually not allowed and you maybe get kicked from your work here...*edit* i found that on opera too (build in)
Flashblock: i like flash animations... i dont know what is so annoying with that, or you mean the advertising windows, which bloop out with flash animation? opera has a better Pop-up blocker than Adblock+ is
URL fixer: for ppl who cant read and write
Gspace: for ppl, who dont have harddrives, dropbox, rapidshare or anything of the other 100000 data hoster

so it has 4 out of 11 (and those aren't even all of the ones I use) I'm sorry but I'll stick with my firefox

u can probly fix addons to opera to...rhk and it will worke 10 times better than your firefox

There's 0 proof that the addon will be 10 times better or even work at all, maybe 10 times worse because it was built for the firefox architecture not opera's... seriously think before you say something

4of 11...the other 7 are so useless

Plus greasemonkey is not useless, you just need some good scripts

i had lots of scripts for a page, but after one time it got boring and i took the standard

Ok so if you want boring internet: use opera

Agreed

Agreed if u dont stfu i will smack evryones face lock this retard topic now..

Here is my as-neutral-as-possible comparison between the two:

Speed

Opera would have a significant advantage here, however there are several configurations that can be made to Firefox to bump its speed up to quite close to Opera's standard. Regardless, Opera is still faster.

Appearance

This is very individual. I think that Opera has the best feel of the two browsers. You can get dozens of skins, all of which look much better than the majority of Firefox's (very few) skins--and thank God Firefox has them. If there were no Firefox skins, I wouldn't be using it, that's how ugly the default Firefox skin is. I have managed to find one that I think is quite nice and sleek, so I am alright with using Firefox.

Convenience

Opera will let you store a link a n y w h e r e. You can drag and drop a little favicon anywhere; bottom, near the status-bar; top, on the bookmarks toolbar as well as among the other buttons; left, at the sidebar (which I'll get to); bottom, at the status bar; at the little bar that pops up when you write a URL. In comparison, Firefox lets you store links at the toolbar. That's it.

Opera has the only sidebar one that really works fine without interfering. Firefox has loads of add-ons for this; some are great, but none really live up to Opera's. I don't use the sidebar, so I really don't mind.

Opera scores major marks on convenience, in terms of pre-packaging items that Firefox needs add-ons for. Which brings us to ...

Add-ons/Widgets

Firefox is hands-down the winner here, no contest. Add-ons are easily Firefox's biggest advantage. Almost everything Opera has can be made up for by downloading add-ons, the majority of which work just as well.

On top of just making up for Firefox's lacking features, Add-ons go much, much further, and give Firefox many advantages that an Opera user won't have. Countless of useful add-ons; I won't list them; and saying that this is an invalid argument because they are useless makes no sense. Add-ons alone could cancel out all the advantages of Opera, depending wholly on the person.

Reliability

My Opera won't work, or at least is slow as hell. Firefox works fine.
Otherwise, I really don't know much about the reliability of the browsers.

rhk got mad paint skills

my firefox crashed 10000 times, so i changed to opera

my point of view

your point of view is wrong -.-