The best modules ***

by Mus87

154 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,887 reviews

20,031,442 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 7,101 reviews

4,451,222 users

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

anonymoX by anonymoX GmbH

Rated 3 out of 5 stars 308 reviews

513,905 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

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,840 reviews

2,018,974 users

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...

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 430 reviews

1,061,903 users

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.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,802 reviews

1,224,827 users

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

LastPass Password Manager by LastPass

Rated 4 out of 5 stars 1,393 reviews

720,214 users

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

YouTube™ Video and Audio Downloader by InBasic, Alopepeo

Rated 4 out of 5 stars 354 reviews

706,840 users

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 embedded in video files.

Ghostery by Ghostery

Rated 5 out of 5 stars 1,306 reviews

1,384,639 users

Increase your browsing privacy, protection, and speed.

Web of Trust, MyWOT/WOT: Website Reputation Rating by WOT Services

Rated 4 out of 5 stars 1,305 reviews

876,237 users

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected

Simple YouTube to MP3/MP4 Converter and Downloader by Jeff

Rated 5 out of 5 stars 38 reviews

112,505 users

Download youtube videos as mp3/mp4/ogg/webm fast and easy! Adding mirrors everyday to decrease any downtime! We monitor comments and work to fix any problems as soon as possible!

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 265 reviews

324,574 users

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

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,616 reviews

785,505 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Web Developer by chrispederick

Rated 5 out of 5 stars 248 reviews

447,456 users

The Web Developer extension adds various web developer tools to the browser.

Full Web Page Screenshots (♥♥♥♥♥) by susbox

FireShot makes full web page screenshots. Demo:

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only
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