Official Firefox Extensions Thread

[Dilligaf]

I'm actually amazed we don't have a thread dedicated to this yet, so let me start it off, in alphabetical order.

Fellow users can post their own "must have" extensions, with a link, description, icon and screenshot (optional), and I'll add them to this list.

Also, feel free to post Greasemonkey scripts as well. Any that are posted will be put together in a spoiler section underneath the Greasemonkey description.

-----------------------------------------------------------------


Adblock Plus

Originally Posted by Adblock Plus website

Ever been annoyed by all those ads and banners on the internet that often take longer to download than everything else on the page? Install Adblock Plus now and get rid of them. Right-click on a banner and choose “Adblock” from the context menu — the banner won’t be downloaded again. Maybe even replace parts of the banner address with star symbols to block similar banners as well. Or choose a filter subscription, then even this simple task will usually be unnecessary: the filter subscription will block most advertisements fully automatically.

Chatzilla

Originally Posted by Chatzilla website

ChatZilla is a clean, easy to use and highly extensible Internet Relay Chat (IRC) client, built on the Mozilla platform, which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and sorting of available channels, logging, and DCC chat and file transfers, plus easy customization with JavaScript plug-ins and CSS styling.

Spoiler for Screenshot:

Check4Change

Originally Posted by Check4Change website

check4change (aka C4C) is a simple Mozilla FireFox extension that allows you to periodically check a web-page for updates.

Have you ever found yourself pressing the reload button frantically while waiting for a web page to be updated?
Well reload no further! with C4C you'll just mark the relevant text, set a check interval (e.g every 1 minute), and you're done!

Cooliris

Originally Posted by Cooliris website

The Cooliris 3D Wall -- Simply the fastest and most stunning way to browse photos and videos from the Web or your desktop. Effortlessly scroll an infinite "3D Wall" of your content from Facebook, Google Images, YouTube, Flickr, and hundreds more.

Spoiler for Screenshots:

Download Helper

Originally Posted by Download Helper website

DownloadHelper is a way to discover many sites showing Web videos from all around the world.
DownloadHelper is also a free Firefox extension for downloading and converting videos from many sites with minimum effort.

Using DownloadHelper, you can easily save videos from most of the popular video sites.

Download Statusbar

Originally Posted by Download Statusbar website

View and manage downloads from a tidy statusbar - without the download window getting in the way of your web browsing.

Spoiler for Screenshot:

DownThemAll!

Originally Posted by DTA! website

DownThemAll (or just dTa) is a powerful yet easy-to-use Mozilla Firefox extension that adds new advanced download capabilities to your browser.
DownThemAll lets you download all the links or images contained in a webpage and much more: you can refine your downloads by fully customizable criteria to get only what you really want.
DownThemAll is all you can desire from a download manager: it features an advanced accelerator that increases speed up to 400%, it allows you to pause and resume downloads at any time and, last but not least, it's fully integrated into your favorite browser!

Spoiler for Screenshots:

FireBug

Originally Posted by FireBug website

Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.

Spoiler for Screenshot:

FireFTP

Originally Posted by FireFTP website

FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.

Spoiler for Screenshot:

ForecastFox

Originally Posted by ForecastFox website

Forecastfox is an extension that brings international weather from AccuWeather.com® to your Firefox web browser. You can use your US zip code or you can easily find your town or city by using the built in search tool. It is unobtrusive and lightweight, yet can be customized to display nearly as much data as the leading desktop weather programs! If you can't find what you are looking for, click the weather icons displayed to open the AccuWeather.com® forecast for your location. A slider, similar to when popup notification for when all downloads complete, pops up from the bottom right corner of your screen when the current conditions are updated. You can even set what appears in it or disable it!

Spoiler for Screenshots:

GreaseMonkey

Originally Posted by GreaseMonkey website

Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.


Hundreds of scripts are already available for free. And if you're the tinkerer sort, you can also write your own.

Spoiler for Userscripts:

Rapidshare Links Checker

NoScript

Originally Posted by NoScript website

The NoScript Firefox extension provides extra protection for Firefox, Flock, Seamonkey and other mozilla-based browsers: this free, open source add-on allows JavaScript, Java and Flash and other plugins to be executed only by trusted web sites of your choice (e.g. your online bank), and provides the most powerful Anti-XSS protection available in a browser.

QuickDrag

Originally Posted by QuickDrag website

Extends the function of the drag-and-drop mouse gesture so that it can be used to load URLs, do a web search of selected text on a page, or save an image on a page. The successor to Super DragAndGo.

Spoiler for Screenshot:

Remove It Permanently (a.k.a RIP)

Originally Posted by RIP website

Rip (Remove it Permanently) provides the ability to point at and remove permanently any item you can select. It provide a flexible and easily configurable solution to removing unwanted content from a web page.

Spoiler for Example of what RIP can do:

SearchPreview

Originally Posted by SearchPreview website

The extension previously known as GooglePreview. Inserts preview images (thumbnails) and popularity ranks of web sites into the Google, Yahoo and Bing search results pages.

Stylish

Originally Posted by Stylish website

Stylish is a Firefox and Thunderbird extension that lets you install and manage user styles.

Spoiler for Screenshot:

Search Assistant - Surf Canyon

Originally Posted by Surf Canyon website

Unleash the power of search like never before. Improve relevancy by up to 40% on Google, Yahoo!, Bing, Lexis Web and Craigslist by automatically digging out results from as deep as page 100.

This add-on automates the discovery of relevant information buried in the search results on Google, Yahoo!, Bing, Lexis Web or Craigslist.

Simply enter your query at one of these search engines as you always would. When you click a result that appeals to you, the application automatically re-ranks the result set in order to bring forward what you need while suppressing what you don’t want. “Recommended” results can come from as deep as page 100, where virtually no one ever looks, but often come from pages 2-10. Surf Canyon also inserts optional “bull’s eye” icons to the search page to enable retrieving recommendations immediately, without having to actually click the particular result.

Spoiler for Screenshots:

Tab Preview

Originally Posted by Tab Preview website

Tab Preview is an extension for Firefox 1.5 or newer that shows a preview of tab contents when you move your mouse over a background tab. It's simple to use, but surprisingly useful.

Spoiler for Screenshots:

TabRenamizer

Originally Posted by TabRenamizer website

Have you noticed that everybody looks the titles of your open tabs? It has a name: Paranoia! And a solution too: TabRenamizer!

Using TabsRenamizer, you can rename links to preset ones or ones you make up.

Spoiler for Screenshot:

[DarkGamer]

Stylish
4chan

[Fd!]

Greasemonkey

+

Rapidshare Links Checker

(also checks megaupload and others)--> puts a check-mark or a cross like this next to any link:






-----------------------------------------------------------------

Download Status Bar

[tony5607]

TabRenamizer

Renames links to preset ones or ones you make up.

https://addons.mozilla.org/en-US/firefox/addon/2987/

[Joe88]

Download Helper
https://addons.mozilla.org/en-US/firefox/addon/3006
download those youtube and other embedded videos


Forecastfox
https://addons.mozilla.org/en-US/firefox/addon/398
current weather at the bottom of your browser, and extended forecast


ChatZilla
https://addons.mozilla.org/en-US/firefox/addon/16
an easy to use IRC cleint built in firefox

[wh1tef@ng]

wow this is pretty cool

[Steven_PSN-14]

Surf Canyon

https://addons.mozilla.org/en-US/firefox/addon/6549

[certa]

Don't know if I can say this is must have, but I like iteally useful on gallery sites. http://www.cooliris.com/product/

[gold2040]

Stylish
https://addons.mozilla.org/en-US/firefox/addon/2108
can give a web page a whole new look instantly

EDIT: Damn dilli beat me to it

[Dilligaf]

--Updated first post with Cooliris--


Keep 'em coming guys. The more extensions that get posted, the better.