Firefox is the web browser of choice for 24% of users on the worldwide web and is one of the best browsers available. We’ve put together this list of our favorite Extensions that are sure to give your browser a functionality boost…

DownThemAll!

Addon URL: addons.mozilla.org/downthemall/

Author Description: DownThemAll is fast, reliable and easy-to-use! It 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! Be in full control over your downloads, dedicated speed and number of parallel connections at any time.

Adblock Plus

Addon URL: addons.mozilla.org/adblock-plus/

Author Description: Adblock Plus allows you to regain control of the internet and view the web the way you want to. The add-on is supported by over forty filter subscriptions in dozens of languages which automatically configure it for purposes ranging from removing online advertising to blocking all known malware domains.

Firebug

Addon URL: addons.mozilla.org/firebug/

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

IE Tab

Addon URL: addons.mozilla.org/ie-tab/

Author Description: This is a great tool for web developers, since you can easily see how your web page displayed in IE with just one click and then switch back to Firefox.

NoScript

Addon URL: addons.mozilla.org/noscript/

Author Description: NoScript allows JavaScript, Java and other executable content to run only from trusted domains of your choice, e.g. your home-banking web site, guarding your “trust boundaries” against cross-site scripting attacks (XSS), cross-zone DNS rebinding / CSRF attacks (router hacking), and Clickjacking attempts, thanks to its unique ClearClick technology. It also implements the DoNotTrack tracking opt-out proposal by default. Such a preemptive approach prevents exploitation of security vulnerabilities

Video DownloadHelper

Addon URL: addons.mozilla.org/video-downloadhelper/

Author Description: DownloadHelper is a tool for web content extraction. Its purpose is to capture video and image files from many sites. Just surf the Web as you are used to, when DownloadHelper detects it can do something for you, the icon gets animated and a menu allows you to download files by simply clicking an item.

For instance, if you go to a YouTube page, you’ll be able to download the video directly on your file system. It also works with MySpace, Google videos, DailyMotion, Porkolt, iFilm, DreamHost and others.

Screengrab!

Addon URL: addons.mozilla.org/screengrab-fix-version/

Author Description: Screengrab! takes screenshots of webpages and saves them as images.

ColorZilla

Addon URL: addons.mozilla.org/colorzilla/

Author Description: With ColorZilla you can get a color reading from any point in your browser, quickly adjust this color and paste it into another program. You can Zoom the page you are viewing and measure distances between any two points on the page. The built-in palette browser allows choosing colors from pre-defined color sets and saving the most used colors in custom palettes.

Download Statusbar

Addon URL: addons.mozilla.org/download-statusbar/

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

ColorfulTabs

Addon URL: addons.mozilla.org/colorfultabs/

Author Description: The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color and makes them easy to distinguish while beautifying the overall appearance of the interface.