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Copy PlainText

Copy Plain Text without any formatting

ScrollAnywhere

Scroll page without touching scroll-bar! Press Middle (Right / Left) mouse button anywhere on the page to scroll just like with scrollbar. Features also: - "grab and drag" scrolling - customizable scrollbars! - the Momentum auto-scroll

NoScript Security Suite

The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.

Disconnect

Make the web faster, more private, and more secure.

DuckDuckGo Privacy Essentials

Simple and seamless privacy protection for your browser: tracker blocking, cookie protection, DuckDuckGo private search, email protection, HTTPS upgrading, and much more.

'Improve YouTube!' 🎧 (For YouTube & Video)

Youtube Extension. Powerful but lightweight. Enrich your Youtube & content selection. Make YouTube tidy&smart! Layout Filters Shortcuts Adblocker Playlist

Tab Reloader (page auto refresh)

An easy-to-use tab reloader with custom reloading time settings for individual tabs

Tree Style Tab

Show tabs like a tree.

Stylebot

Change the appearance of the web instantly

To Google Translate

Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.

Turbo Download Manager

A download manager with the ability to pause and resume downloads, download remote files, and more.

Forecastfox (fix version)

Get international weather updates (via AccuWeather.com) displayed right in Firefox with this highly customizable extension.

Tabby - Window & Tab Manager

Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!

SoundFixer

Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)

Dark Background and Light Text

Make every web page (or just the pages you want) display light text on dark backgrounds. All color variations are fully customizable.

automaticDark - Time-Based Theme Changer

Automatically change Firefox's theme based on the time.

FoxClocks

FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.

Easy Youtube Video Downloader Express

A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.

Tranquility Reader

Tranquility Reader improves the readability of web articles by removing unnecessary elements like ads, images, social sharing widgets, and other distracting fluff.

Zoom Page WE

Zoom web pages (either per-site or per-tab) using full-page zoom, text-only zoom and minimum font size. Fit-to-width zooming can be applied to pages automatically. Fit-to-window scaling can be applied to small images.