Extensions by Weekly Downloads

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Adblock Plus No Restart Featured

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).

Rated 5 out of 5 stars (4,191)
1,294,234 weekly downloads

Video DownloadHelper

The easy way to download and convert Web videos from hundreds of YouTube-like sites.
This works also for audio and picture galleries.

Rated 4 out of 5 stars (4,149)
440,587 weekly downloads

Ant Video Downloader and Player

With the Ant.com Video Downloader, you can download video from Youtube or any other streaming site. Rare are the sites you will not be able to download from. We have integrated a flash video player too, so that you can play your files immediately.

Rated 4 out of 5 stars (371)
247,008 weekly downloads

Flash Video Downloader - Full HD Download Featured

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

Rated 4 out of 5 stars (438)
180,573 weekly downloads

Firebug No Restart

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...

Rated 5 out of 5 stars (1,623)
169,404 weekly downloads

anonymoX

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

No proxies or other programs required

Rated 4 out of 5 stars (130)
155,459 weekly downloads

1-Click YouTube Video Download

The simplest YouTube Video Downloader for all YouTube Flash sites, period.

Rated 5 out of 5 stars (334)
115,014 weekly downloads

Download YouTube Videos as MP4 No Restart Featured

An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.

Rated 4 out of 5 stars (216)
110,605 weekly downloads

NoScript Security Suite Featured

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.

Rated 5 out of 5 stars (1,292)
109,533 weekly downloads

DownThemAll! Featured

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

Rated 5 out of 5 stars (1,390)
104,369 weekly downloads

Ghostery No Restart Featured

Protect your privacy. See who's tracking your web browsing and block them with Ghostery.

Rated 5 out of 5 stars (808)
91,711 weekly downloads

Greasemonkey

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

Rated 4 out of 5 stars (854)
89,938 weekly downloads

Adblock Plus Pop-up Addon

Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.

Rated 4 out of 5 stars (154)
78,224 weekly downloads

Download Flash and Video

Download Flash and Video is a great download helper tool that lets you download Flash games and Flash videos (YouTube, Facebook, Dailymotion, Google Videos and more) with a single click.
The downloader is very easy to use.

Rated 5 out of 5 stars (213)
75,512 weekly downloads

Youtube Video and Audio Downloader No Restart Featured

Downloads YouTube videos in all available formats (FLV, MP4, WebM, and 3GP) with video quality of your choice. It also contains a pure JavaScript library to extract the ORIGINAL audio file out of FLV videos. It optionally downloads subtitles as well!

Rated 4 out of 5 stars (118)
68,569 weekly downloads

Easy Youtube Video Downloader Express No Restart

Only one with 1080p Full-HD and 192kbps MP3 Direct Links - 100% clean (no adware/nagware) addon for superfast and easy downloads in FLV,3GP,MP3,MP4,720p, 1080p qualities on Youtube pages.

Rated 5 out of 5 stars (119)
67,253 weekly downloads

FlashGot Mass Downloader Featured

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.

Rated 5 out of 5 stars (424)
67,103 weekly downloads

Adblock Edge No Restart

Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist or bribes...

Rated 5 out of 5 stars (161)
60,297 weekly downloads

Web of Trust - WOT Featured

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs to help you make informed decisions about whether to visit a site or not.

Rated 4 out of 5 stars (1,300)
57,046 weekly downloads

Google Translator for Firefox Featured

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.

Rated 4 out of 5 stars (227)
46,983 weekly downloads