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YouTube Videos Download in one click Requires Restart

Download YouTube videos by clicking a button underneath videos in YouTube. Save YouTube videos and songs in 1080p (HD) MP4 or FLV format.

Rated 3 out of 5 stars (19)
768 users

Forecastbar Enhanced Requires Restart

Note from Mozilla: This add-on has been discontinued. Try Forecastfox Weather instead.

Get international weather and weather forecasts with Forecastbar Enhanced.

Rated 4 out of 5 stars (167)
33 users

Youtube Downloader Gold

This extension to download audio and video from popular video hosting YouTube. To download the available formats mp4, webm, mp4a, mp3.

Rated 2 out of 5 stars (1)
287 users

AMO Browsing for SeaMonkey

This extension makes browsing for extensions easier at addons.mozilla.org. It fixes incorrect information about some extensions being not available for SeaMonkey and adds links to the Add-on Converter where needed.

Rated 4 out of 5 stars (3)
106 users

DSLR Notifier 2

Updated version of the original DSLR Notifier, created by Ryan Flint, which enables members of Dsl/Broadbandreports.com to keep tabs on their instant messages and updated...

Rated 5 out of 5 stars (9)
56 users

YouTube Video Player Speed

YouTube Video Player Speed play YouTube videos in whatever speed you want

Rated 4 out of 5 stars (8)
17,021 users

Message Seen Disable for Facebook™

Message Seen Disable for Facebook™ lets you turn off Facebook™'s Message Seen feature automatically for your account. You can still use Seen feature for others.

Rated 5 out of 5 stars (15)
5,871 users

Save Button for Pinterest

Save images and pages to your Pinterest account quickly and easily with Save Button for Pinterest.

Rated 5 out of 5 stars (22)
64,454 users

Share Button for Facebook™

Share Button for Facebook™ lets you share any web page on your Facebook™ Timeline by a quick button.

Rated 5 out of 5 stars (32)
6,701 users

VKontakte.ru Downloader (music/videos/photos @ VK) Requires Restart

Download music, videos and photos from VK.com / vkontakte.ru. One-click download, natural filenames, displaying file size and bitrate for music, downloading HD video, downloading HQ photos. No spam, no usage of your account, no spyware.

Rated 4 out of 5 stars (497)
102,812 users

GitHub Extension Installer

Install Browser Extensions straight from GitHub Repositories

Rated 4 out of 5 stars (24)
1,747 users

Messenger for Facebook™

Messenger for Facebook™ lets you bring a Messenger right into your browser to chat with your friends.

Rated 5 out of 5 stars (46)
17,277 users

Toolbar Button for Facebook™

Toolbar Button for Facebook™ lets you visit your favorite Facebook™ quickly and easily by adding a special button to your Toolbar.

Rated 3 out of 5 stars (35)
16,976 users

YouTube Video Replay

YouTube Video Replay is a new tool that lets you replay YouTube Videos.

Rated 5 out of 5 stars (28)
6,473 users

Photo Zoom for Facebook™

Photo Zoom for Facebook™ lets you zoom Facebook™ images.

Rated 5 out of 5 stars (18)
6,033 users

Sidebar for Facebook™

Sidebar for Facebook™ brings Facebook™ right into your Firefox. Get notifications, status and photos from Facebook™ instantly.

Rated 5 out of 5 stars (7)
2,323 users

YouTube Video Center

Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.

Rated 5 out of 5 stars (11)
2,462 users

Web Messenger for WhatsApp™

Web Messenger for WhatsApp™ brings web messenger right into your browser to chat with your friends.

Rated 4 out of 5 stars (8)
16,011 users

YouTube Video Player Preview

YouTube Video Player Preview lets you preview YouTube videos when you hover over thumbnails.

Rated 5 out of 5 stars (3)
6,969 users

Yahoo! Mail Notifier Requires Restart

This extension notifies you when new messages arrive in your Yahoo mailbox.

Rated 3 out of 5 stars (185)
3,434 users