ITT: Must Have Firefox Extensions

[Shibboleet The Annihilator]

As you well know (or should know), Firefox is the shit. It can become even more the shit (shitter?) through the many extensions available through Mozilla's website. ITT, we post them.

For example:
NoScript - Selectively blocks Javascript
AdBlock Plus - Blocks known advertising servers
Ghostery - Blocks tracking cookie
WorldIP - Shows the IP and country of the website you're currently connected to.

[Cain]

Linkify: Turn unlinked URLs into proper links
Copy Plain Text: Copy text without the formatting
Download status-bar: makes downloads much easier to manage
Refcontrol: controls what information a site gets in its referral logs
PDF download: instead of making Firefox freeze and crash, you can choose to download a PDF when you click on a link to one, or view it in HTML, or open it directly in your pdf reader.

[Golden Applesauce]

RefControl - block or spoof referrer on a whitelist, blacklist, or per-site basis.
Unicode Input Tool/Converter - enter unicode character∫.  It's a little clunky, if somebody knows a better app for this let me know.

Also, rather than mess with cookies, I just set them to clear every time I close Firefox and restart browsing frequently.

Now we just need an app to stop Firefox from eating memory like a baleen whale.

[Golden Applesauce]

PDF download: instead of making Firefox freeze and crash, you can choose to download a PDF when you click on a link to one, or view it in HTML, or open it directly in your pdf reader.

Odd, my linux box saves or opens PDFs in an external application by default.  Must not have the pdf plugin for Firefox installed or something.

[Triple Zero]

iMacro: record and play macros for link clicking and posting. great for strafing and imagebombing.
Firebug: Debug, browse and edit HTML and Javascript code.

also, I found that if you install too many extensions for Firefox, it turns very slow and buggy, but that may have been fixed in later versions of FF.

GA: yes open-in-browser plugin comes installed with Acrobat for Windows. You can have it in Linux too if you want (but you don't), except you have to turn it on manually.

[Corvidia]

NukeEverything: lets you delete selections of text and images, or everything BUT the selected

Yonoo: All your social networking stuff (facebook, myspace, twitter, etc.) on a side bar, with the ability to update, comment, and share stuff, plus chatting for gmail and msn. Also, you can check your email, listen to Last.fm, search the web, read your RSS, and make notes.

Jeteye: save websites, texts from websites, and notes about them in packs.

Zotero: VERY good for those of us who do a lot of research--save pages, text, images, and sources, plus it formats the source citations in MLA and AAA for you, which is very nice.

Interclue: Hover over a link, and then click the little magnifying glass at the edge of the link. It will open a little window to let you view web pages and pictures before going through. Livejournal has a similar function built in.

Evernote: This will download a program to your computer too (which is very useful in its own right) and you can clip images and text to a pane. You have to register at the website as well, but it gives you the ability to back up your stuff to their site.

Sxipper: Keeps your passwords and usernames for you, plus addresses and so on, and all you have to do is click the little pane that pops up. You can prevent it fro remembering certain things if you prefer, as well.

Bugmenot: bypasses mandatory registration for websites.

Colorful Tabs: sounds silly, but it gives your tabs different colors. Makes it very easy to tell them apart at a glance.

[Shibboleet The Annihilator]

StumbleUpon: Like channel surfing, but on the internets... We could call it: websurfing.

But really, it's pretty damn cool. You pick a topic you're interested in and click stumble. Stumble gives you related pages and you tell stumble whether you like it or not and stumble attempts to bring you more pages similar to the ones you like. It's a lot like Pandora for webpages.

[Requia ☣]

PDF download: instead of making Firefox freeze and crash, you can choose to download a PDF when you click on a link to one, or view it in HTML, or open it directly in your pdf reader.

Odd, my linux box saves or opens PDFs in an external application by default.  Must not have the pdf plugin for Firefox installed or something.

Linux boxes don't normally have adobe, which hijacks web browsers.

[PeregrineBF]

Just going to list mine...

Adblock Plus: blocks ads. You really ought to know about this already...
All-in-One Sidebar: sidebar for downloads, add-ons, history, etc. Nicer than second windows, collapses to a thin bar.
BetterPrivacy: Blocks/clears cookies, INCLUDING FLASH COOKIES. Which is the important thing.
Download Them All: bulk downloader. FlashGot is similar.
FireGestures: Mouse gestures for firefox. Also nice things like "increment/decrement digit in URL" for reading webcomic archives.
Gmail Manager: new message alerts, etc.
ImageZoom: Allows zooming in/out on all images. Very useful.
Leet Key: No longer maintained, need to override max version compatability checking. Has some nice features for inputing text.
Morning Coffee: opens a set of pages, the members of which can vary by day. Good for sites that update a few times a week & don't have RSS feeds.
MR Tech toolkit: various useful features, like enabling out-of-date addons and such. More for debugging.
NoScript: Blocks flash/javascript/java/etc. Not something you want to go without.
Nuke Anything Enhanced: remove any page element.
PDF Download: choices on how to open/save PDF files.
RSS Ticker: puts an RSS feed ticker at the bottom of the browser. Like a stock ticker, but for news.
Session Manager: saves/restores sessions.
Targeted Advertising Cookie Opt-Out (TACO): auto-opts out of various advertising cookies.
Tree-Style tab: Puts the tabs in a sidebar, with a hierarchy of parent/child tabs. Very useful, especially with the lower vertical screen space widescreen monitors have.
Update Notifier: makes keeping add-ons up to date easier.
XUL Profiler: debugging add-on, for finding what scripts take up how much time.
YouTube Comment Snob: hide comments based on heuristics, such as too much punctuation!!!!!111one, not enough punctuation not starting with a capital letter OR ALL CAPS!

Ones I'd hate to have to go without, and thus stay on firefox for:
Adblock Plus, BetterPrivacy, ImageZoom, NoScript, Tree-Stlye Tab

[Requia ☣]

RSS Ticker: puts an RSS feed ticker at the bottom of the browser. Like a stock ticker, but for news.

Oooh, I've been looking for a better ticker style RSS feeder.

Also, somebody else said Zotero, but it needs to be mentioned again.

[PeregrineBF]

Yeah, I wish coolris wasn't windows only.

[Iason Ouabache]

Is it necessary to have NoScript and AdBlock at the same time? I only have AdBlock right now and never have any problems with annoying Java scripts.

[Kai]

Zotero is the shit.

[Shibboleet The Annihilator]

Is it necessary to have NoScript and AdBlock at the same time? I only have AdBlock right now and never have any problems with annoying Java scripts.

I would very strongly recommend that you use NoScript. It takes some getting used to but makes your Internets safer.

[Golden Applesauce]

Is it necessary to have NoScript and AdBlock at the same time? I only have AdBlock right now and never have any problems with annoying Java scripts.

AFAIK AdBlock only disables some Java applets - I don't think it actually blocks javascript.  NoScript is less for the annoying javascripts than for the "compromise your computer" javascripts.