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Telify
Requires Restart
Converts telephone numbers into clickable links for use with CTI applications, SIP clients, Skype, Netmeeting, snom phones, the AGFEO TK-Suite Client and SerVonic IXI-PCS.
Thumbnail Zoom Plus
Requires Restart
Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.
ChatZilla
Requires Restart
A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.
Proxy Tool
Requires Restart
Proxy Tool - Powerful, yet User-friendly proxy tool to manage your proxies and anonymity needs, including: 46M+ user agents (world's largest), 10 different spoofed HTTP referrers, auto-proxy rotation, plus many more. Developed by http://ProxyList.co
Signature /Auto Paste /Prefill Fourms
Requires Restart
Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )
Toggle Proxy
Requires Restart
The move to Webextensions by Mozilla for Firefox 57+ has made it impossible to modify about:config, this holds Firefox proxy settings. Therefore, this and many other addons will become obsolite from Firefox 57+ onwards unless Mozilla update the API.
iMEGA
This add-on is intended to ease the life of the regular MEGA user.
Please note this extension is NOT the official from Mega, for the real one please go to: https://mega.nz/#firefox
Fox Web Security
Requires Restart
Protection from adult content (parental control) and from dangerous sites.
Entrust protection for yourself and your children to professionals!
SMS Sidebar
Requires Restart
If you work in front of a computer and send a lot of SMS text messages this is for you. Finally you can send SMS from the privacy of your Mozilla application. The focus of this addon is on efficiency, ease of use and easy access to advanced SMS featu...
Yelp Search Toolbar
Requires Restart
YELP SEARCH TOOLBAR, NOW IT MORE EASY TO REVIEW & TALK ABOUT WHAT'S GREAT - AND NOT SO GREAT - IN YOUR AREA
Column Reader
Web reader for wide screens and long documents. Read with pleasure in attractive layouts.
infoRSS
Requires Restart
Displays RSS, Atom, Twitter, parsed HTML and NNTP feed in a scrolling area in the status bar. Compatible with podcasting RSS which can be downloaded directly. It's also a good Google email notifier.
Mnenhy
Requires Restart
The primary goal of the Mnenhy project is to make some enhancements to SeaMonkey MailNews/Thunderbird, since there're still plenty of comfort functions missing if compared to Netscape 4.x and other mail and news clients.
WebPG for Mozilla
Requires Restart
An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey
Facebook Chat Download
Create a simple html page containing the whole chat. The page will contain only the chat section. All other page elements will be removed. Once the addons ends loading the chat you can save the clean page from your browser.
xmpp4moz
Requires Restart
xmpp4moz integrates the XMPP protocol (also known as Jabber) into Mozilla applications.
Extension List Dumper
Requires Restart
This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...
YouTube Video Player Pop Out
YouTube Video Player Pop Out lets you pop out YouTube videos so that you can watch YouTube videos while you surf.
Wepware - Capture and Share Live Content
Requires Restart
Grab live snapshots of anything on the internet, organize your collected content into folders and share with friends through SNS.
To create your own collections, you must have a Mozilla Add-ons account.