Recently Updated Extensions
View links, pages, and bookmarks in IE, Edge or any other browser. Modify any menu, browser name or location. Incognito/private browsing mode is also supported. Works for all Firefox locales/languages.
Use Gmail to get things done.
ActiveInbox turns Gmail into a GTD task manager, where your emails are your tasks.
It lets you achieve inbox zero, never forget an important email, and move projects forward with ease.
NoScript Security Suite Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.
Mass Mail and Personal Mail
No Resource URI Leak No Restart
Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for bugzil.la/863246
Gmail Mail Sidebar No Restart
Gmail Mail Sidebar brings Gmail right into your Firefox Sidebar.
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
YouTube Video Player Preview No Restart
YouTube Video Player Preview lets you preview YouTube videos when you hover over thumbnails.
Remote XUL Manager No Restart
Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.
Click-to-Play Manager No Restart
Manages the Click-to-Play domain whitelist.
Addons Manager Hilite No Restart
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.
New Feature: Language learning!
Tategaki allows vertical writing-mode on mail compose window.
True "Send Later" functionality to schedule the time for sending an email.
Flagfox No Restart
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
Certificate viewer enhancements: PEM format view, trust configuration