Add-ons

by sloprlek

817 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,161 reviews

17,240,659 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).

anonymoX by anonymoX GmbH

Rated 3 out of 5 stars 572 reviews

459,849 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 4 out of 5 stars 2,073 reviews

1,847,008 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 489 reviews

1,060,709 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.

LastPass Password Manager by LastPass

Rated 4 out of 5 stars 1,736 reviews

743,629 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,758 reviews

1,163,551 users

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

YouTube™ Video and Audio Downloader by InBasic, Alopepeo

Rated 4 out of 5 stars 404 reviews

699,302 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.

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,060 reviews

1,128,087 users

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

Awesome Screenshot Plus - Capture, Annotate & More by Diigo Inc.

Rated 4 out of 5 stars 1,465 reviews

466,673 users

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

1-Click YouTube Video Download by The 1-Click YouTube Video Download Team

Rated 4 out of 5 stars 512 reviews

596,531 users

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

Google Translator for Firefox by nobzol

Rated 4 out of 5 stars 378 reviews

768,023 users

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.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 532 reviews

692,855 users

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.

Lightning by Mozilla Calendar Project

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

QuickJava by Doug G

Rated 5 out of 5 stars 188 reviews

259,043 users

Allows quick enable and disable of Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth. (Read details for info on Java with FF52+!)

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 379 reviews

263,239 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
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