A List of Stable, Non-Conficting and Essential addons

by ChessWriter

650 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,479 reviews

14,757,039 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Video DownloadHelper by mig

Rated 4 out of 5 stars 8,000 reviews

3,767,325 users

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

anonymoX by anonymoX GmbH

Rated 4 out of 5 stars 704 reviews

268,567 users

Easy anonymous web browsing.
– Change your IP-Address and country
– Visit blocked or censored websites.
– Delete cookies, show your public ip, and more

We provide the proxy servers, no external proxies or other programs required

Flash Video Downloader - YouTube HD Download [4K] by Artur Dubovoy

Rated 4 out of 5 stars 2,306 reviews

749,173 users

Flash Video Downloader helps you download any video (flv, mp4, HD) from YouTube, Facebook, Break, Metacafe and more in one click. You can download mp3, music (iPod), avi and more. Download Flash games. Download Helper. 4K download.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,784 reviews

988,322 users

The first and only download manager/accelerator built inside Firefox!

LastPass Password Manager by LastPass

Rated 4 out of 5 stars 1,961 reviews

662,518 users

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,576 reviews

1,781,917 users

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,114 reviews

924,684 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

iMacros for Firefox by Ipswitch, Inc.

Rated 4 out of 5 stars 503 reviews

597,144 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Google Translator for Firefox by nobzol

Rated 4 out of 5 stars 399 reviews

642,948 users

With this addon you can translate any text to your own language with one click or hot-key. You can either translate the selected text, this way the translated text will overwrite the original selected text, or you can translate the full page too.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 540 reviews

510,621 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 277 reviews

235,613 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Stylish by userstyles.org

Rated 4 out of 5 stars 842 reviews

341,217 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

QuickJava by Doug G

Rated 5 out of 5 stars 189 reviews

205,678 users

Allows quick enable and disable of Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth. (Read details for info on Java with FF52+!)
Collector's Note I think this is much better than things like NoScripts. Much less cluttered, much less time wasting and much more simpler to use. The only negative - it takes space of 5 buttons on the addon bar(although the buttons are beautiful, I must say). If you want only one button to toggle all plugins, use the Pluggin toggler.

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 393 reviews

207,242 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
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