ID:40516
 
Like most of you, I use Firefox as my main web browser. The number one feature of Firefox has always been the Extensions. Here are some that I have found very useful, and the most important to everyday surfing:

Adblock Plus: With automatically updating ad-filter lists, it catches pretty much all ads, even practically brand-new ones. Has the ability to Whitelist sites if any issues are found, or if you just want to support BYOND.

Download Statusbar: A nice little tool that ads a bar at the bottom of your browser to tell you how your downloads are doing. After using this tool, I can't stand being without it.

FireGestures: Quick and simple mouse gestures for Firefox. Want to go back? Mouse at the bottom of the screen? Too lazy to move it all the way up to the top? Just right click and drag left. My favorite extension of all.

Hide Menubar: Damn that menubar taking up screenspace! Hide Menubar lays the smackdown on the menubar, saving you an entire line of data. A simple press of the Alt key makes it pop back up.

NoScript: Hate being rickrolled? NoScript can help. It disables javascript/Flash/Quicktime/Pretty much anything besides HTML/CSS on sites that aren't whitelisted. The true advantage is not rickroll blocking, but rather security. Who knows what security problems might be in Flash, Adobe Reader, Quicktime, or Windows Media Player. WMP specifically allows people to access IE, so it makes Firefox as insecure as IE. NoScript fixes that.

Tab Mix Plus: Doesn't do anything you couldn't do with About:Config, but makes tab settings a lot easier to edit. Highly recommended for quickly reconfiguring tab settings.

All the extensions listed above are compatible with Firefox 3 beta 4.
Tab Mix Plus isn't compatible.
Hmm, maybe you have to go to their site and get it, but I have it running in Firefox 3.0b4.
FireGestures is godly. Within 30 seconds of using it I love it. Thank you :D
Yeah, I normally use one called "MouseGestures" but they haven't updated it for 3.0b4 yet, so I tried FireGestures and like it a lot, really simple options.
FireFTP is invaluable to those of us who do a lot of website work.

I'm also partial to FasterFox.
I'm going to do a separate post on developer extensions. I do use FireFTP a lot. It's good. But not something the average user will need.
One I forgot to mention is called "Cache Status". This is handy for controlling your cache on the fly.

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For developer tabs, when you get around it, provided you haven't heard of, I suggest:

FireFTP
IE Tab
Firebug
TamperData

And although I haven't tried it myself this one grabbed my interest.
Oh, the "WebDeveloper" extension is top notch. It has all kinds of crazy features that are very helpful when working on a website. I have been using since Firefox 1.5 I believe.
Oh now, I do like the standards compliance, CSS and Javascript error warnings right there. That is kick ass.
Not only that, but there is an option to show all ID and Class tags on a page. That makes it really easy to tweak CSS.
This one might be useful for the average user. Quite a few people do enjoy their torrents.