Add-ons

by sloprlek

816 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,503 reviews

14,244,315 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 4 out of 5 stars 714 reviews

261,869 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 2,090 reviews

1,421,121 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 510 reviews

888,802 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 1,787 reviews

959,383 users

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

LastPass Password Manager by LastPass

Rated 4 out of 5 stars 1,972 reviews

638,715 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 419 reviews

595,334 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.

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

Rated 4 out of 5 stars 1,519 reviews

415,591 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!

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,116 reviews

898,531 users

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

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

Rated 4 out of 5 stars 527 reviews

477,244 users

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

Google Translator for Firefox by nobzol

Rated 4 out of 5 stars 399 reviews

621,885 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 542 reviews

495,920 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.

Google Translate, ImTranslator, Dictionary, TTS by Smart Link Corporation

Rated 4 out of 5 stars 446 reviews

229,968 users

COMPLETELY REDESIGNED TRANSLATOR FOR FIREFOX
ImTranslator translates text, words, webpages between more than 90 languages.
NEW: Inline Translator, Dictionary, access to Google Translate, Microsoft Translator. Unique on the fly localization.

YouTube mp3 by Philip

Rated 3 out of 5 stars 275 reviews

301,420 users

Adds a download button to YouTube. By clicking on it you can download the video as a high quality mp3 file.

QuickJava by Doug G

Rated 5 out of 5 stars 189 reviews

196,254 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+!)
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