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Screengrab (fix version) Featured

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

Rated 5 out of 5 stars (291)
147,385 users

Status-4-Evar

Status bar widgets and progress indicators for Firefox 4+

Rated 5 out of 5 stars (551)
142,185 users

Youtube Downloader 4K - Video Downloader

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

Rated 4 out of 5 stars (23)
137,855 users

Text Link

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

Rated 4 out of 5 stars (293)
136,964 users

ChatZilla Featured

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

Rated 4 out of 5 stars (127)
134,898 users

Nimbus Screen Capture - editable screenshots No Restart Featured

1) Screen capture web pages.
2) Selected regions.
3) Whole browser windows.
Edit screenshots and save the images to either local file or Google Drive. Annotate screenshots in a very user-friendly interface with different tools. Upload and share!

Rated 5 out of 5 stars (257)
134,565 users

McAfee Security Scan Plus detection No Restart

This extension allows Adobe installers to detect McAfee Security Scan Plus software is installed on your PC.

Rated 1 out of 5 stars (13)
132,691 users

Tab Scope Featured

Preview and navigate tab contents through popup.

Rated 4 out of 5 stars (469)
132,461 users

New Tab Homepage No Restart

A very simple tabbed browsing extension that loads your homepage when you open a new tab. If you have multiple homepages, the first is chosen.

Rated 4 out of 5 stars (364)
131,799 users

Youtube and more – Easy Video Downloader No Restart

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

Rated 4 out of 5 stars (460)
128,108 users

DOM Inspector

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

Rated 5 out of 5 stars (66)
127,650 users

Bluhell Firewall No Restart Featured

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Rated 5 out of 5 stars (277)
127,345 users

Youtube Best Video Downloader 2 - MP3 MP4 M4A AAC No Restart

Now with 1080p Full-HD Support!
Direct YouTube downloads MP3 M4A AAC and HD MP4, FLV, 3GP. With just one mouse click! With the click off an mouse button! Super fast downloads right from the Youtube video page you are viewing.

Rated 3 out of 5 stars (42)
124,430 users

DuckDuckGo Plus No Restart Featured

DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension makes DuckDuckGo available in the address bar, search bar and right-click menu. Also adds a handy toolbar button with more features!

Rated 4 out of 5 stars (150)
124,380 users

Modify Headers

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 (74)
123,188 users

Lucifox

Read EPUB e-books and browse OPDS catalogs.

Rated 4 out of 5 stars (23)
122,308 users

Youtube MP3 Podcaster

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 (231)
122,139 users

Print Edit 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 (303)
120,378 users

JSONView No Restart

View JSON documents in the browser.

Rated 5 out of 5 stars (159)
119,502 users

JavaScript Debugger

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

Rated 4 out of 5 stars (50)
119,457 users