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Youtube Best Video Downloader 2 - MP3 MP4 1080P

Now with 1080p Full-HD Support!

Download every YouTube video you want and you can download them as Full-HD MP4, FLV, 3GP, MP3 128kbps and 256kbps, M4A and AAC formats. Also thumbnails and subtitles can be downloaded! Easy and Fast!

Rated 3 out of 5 stars (61)
120,103 users

Print Edit Requires Restart Featured

Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.

Rated 5 out of 5 stars (327)
119,597 users

Youtube Downloader 4K - Video Downloader Requires Restart

Download from YouTube 4K videos and thousands other video websites.

Rated 4 out of 5 stars (144)
118,992 users

Modify Headers Requires Restart

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

Rated 4 out of 5 stars (78)
116,718 users

Selenium IDE Requires Restart

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

Rated 3 out of 5 stars (24)
116,673 users

Add-ons Manager Context Menu Requires Restart

Add more items to Add-ons Manager context menu.

Rated 5 out of 5 stars (37)
115,622 users

Доступ к Рутрекеру

Не знаешь как зайти на Рутрекер? Установи и пользуйся!

Rated 4 out of 5 stars (56)
114,733 users

Text Link Requires Restart

Allows URI texts written in webpages to be loaded by double clicks.

Rated 4 out of 5 stars (300)
113,618 users

Empty Cache Button Requires Restart

Cache clearing made easy. One click.

Rated 4 out of 5 stars (94)
113,441 users

Strict Pop-up Blocker

Quickly toggle between blocking all pop-up windows and allowing some pop-ups

Rated 4 out of 5 stars (105)
112,943 users

Youtube and more – Easy Video Downloader

Download and save videos playing on a website like youtube to your hard disk

Rated 4 out of 5 stars (474)
111,080 users

Youtube MP3 Podcaster Requires Restart

Self contained add-on for downloading youtube videos to mp3 for easy listening on podcasting gadgets like a Zune or iPod

Rated 4 out of 5 stars (257)
110,327 users

YouTube ALL HTML5

Play all videos on YouTube with your preferred settings (size, quality, playback rate, …) without cookies using only HTML5.

Rated 4 out of 5 stars (159)
109,645 users

JSONView

View JSON documents in the browser.

Rated 5 out of 5 stars (177)
108,381 users

ChatZilla Requires Restart

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

Rated 4 out of 5 stars (128)
107,538 users

Theme Font & Size Changer Featured

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (181)
107,040 users

OmniSidebar Featured

Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!

Rated 5 out of 5 stars (125)
106,529 users

Tab Scope Requires Restart Featured

Preview and navigate tab contents through popup.

Rated 4 out of 5 stars (481)
106,469 users

Cookies Manager+ Requires Restart

Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.

Rated 5 out of 5 stars (70)
106,191 users

Tree Style Tab Requires Restart

Show tabs like a tree.

Rated 4 out of 5 stars (1,410)
105,961 users