Up & Coming Extensions

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Disable Add-on Compatibility Checks (Version 40+)

Reinstates the extensions.checkCompatibility preference.

Rated 5 out of 5 stars (2)
13,223 users

Font Finder (revived)

Get all CSS styles of selected text

Rated 5 out of 5 stars (6)
3,747 users

YouTube a MP3

Inserta un botón en la pagina de Youtube , que permite con un solo clip descargar el Mp3 de un modo directo y con el maximo bitrate.
Nada de redirecionamientos, ni publicidad.

Rated 5 out of 5 stars (10)
7,486 users

Popup Blocker (strict)

Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address

Rated 4 out of 5 stars (6)
2,364 users

Firefox All Aboard 1.5

The Mozilla Firefox Educational Tool

Not yet rated
1,900 users

ipFlood Requires Restart

Simulate the use of a series of proxy changing at each new connection.

Rated 5 out of 5 stars (33)
170,482 users

Add URL to Window Title (Advanced KeePass Usage)

Add the full URL or hostname of the current web page to the window title. Designed to help other applications identify the current window. Helps KeePass (http://www.keepass.info) to identify the current URL for auto-type.

Rated 5 out of 5 stars (6)
3,118 users

Search Shield Study

A shield Study add-on testing the search experience.

Rated 5 out of 5 stars (1)
1,898 users

YouTube MP4 Downloader

Download YouTube videos in MP4 format.

Not yet rated
1,592 users

Block Site

Easily block websites of your choice!

Rated 5 out of 5 stars (1)
1,204 users

(ESCapeFromThemGIFs)

ESCape From Them GIFs… (Use 'Esc' to Toggle Gif Animation On/Off) Pause all animated gif's with the ESC key... A second press toggles them back on. (image.animation_mode)

Rated 4 out of 5 stars (8)
1,088 users

Youtube Video Download

1. Install Extension
2. Play youtube video in your browser
3. Click the KV icon then click respective links to download
The most popular Keepvid.site website's Youtube Video Download Extension

Rated 1 out of 5 stars (1)
1,255 users

Reverso Translate in Context

Translate words and expressions in context and improve your language skills. Spanish, French, Russian, Italian, etc.

Rated 3 out of 5 stars (8)
1,051 users

Youtube to MP3 Converter

Download/Convert YouTube videos to MP3/MP4/3GP/FLV
Now also support other websites including metacafe, soundcloud, instagram and Facebook

Not yet rated
1,131 users

OmniSidebar Featured

Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!

Rated 5 out of 5 stars (110)
59,657 users

Social Fixer

Social Fixer for Facebook fixes annoyances, adds features, and enhances existing functionality to make FB more fun and efficient. Filter the news feed, hide sponsored posts and political posts, hide parts of the page you don't want to see, and more!

Rated 4 out of 5 stars (126)
4,290 users

BP Proxy Manager Requires Restart

Change your proxies with a single click. Automatically clears the cache and the cookies before changing the proxy.

Rated 3 out of 5 stars (2)
1,780 users

XDM Hook Requires Restart

XDM integration module for Firefox

Not yet rated
1,149 users

ipFood Requires Restart Featured

Simulate the use of a series of proxy changing at each new connection.

Rated 5 out of 5 stars (6)
44,647 users

RuTracker add-on

Extended functionality for RuTracker.

Комфортная работа с зеркалами и пр.

Rated 5 out of 5 stars (1)
2,127 users