Gmail™ Notifier Plus alerts you of new email messages. Users can also read or reply to emails, delete or mark them as read, all without having to open a new window.
A quick and minimalistic way to create bookmarks.
lesspass Compatible with Firefox 57+ Featured
Use LessPass add-on to generate complex passwords and log in automatically to all your sites
Master Password+ Requires Restart Featured
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
Tab Scope Requires Restart Featured
Preview and navigate tab contents through popup.
Pearltrees lets you organize all your interests.
Gmail™ Notifier (restartless) Featured
Multiple account (or label) Gmail notifier (without storing passwords)
ipFood Requires Restart Featured
Simulate the use of a series of proxy changing at each new connection.
Duplicate Tabs Closer Featured
Detects and automatically closes duplicate tabs.
Shows previews of linked articles on Wikipedia pages.
History Submenus II Featured
Add sub-menus to History Menu for previous days' history.
Ghostery Compatible with Firefox 57+ Featured
Increase your browsing privacy, protection, and speed.
Protect your Passwords, Payments, and Privacy.
QR Code Image Generator Featured
Create a QR code of the selected text, current url or hyperlink. Also possible to create a QR Code from free text within Firefox. Now with UTF8 support.
Get all CSS styles of selected text
Extended Cookie Manager - Keep only wanted cookies.
Smart HTTPS Featured
Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.
Lightbeam for Firefox Featured
Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.
Grab and download media (image, audio, and video) resources by monitoring network (like FlashGot or Flash video downloader extensions)