To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseAlerts & Updates
Sort by:
Version Number in Add-ons Manager
[Restartless] [e10s Compatible]
Easily viewable version info in the Add-ons Manager on Firefox/Thunderbird 41.0 - 56.*
Also restores the add-on version number on Firefox/Thunderbird 41.0 - 56.*.
Caret Out Requires Restart
Disables change of the caret browse mode by shortcut key(F7).
CipherFox Requires Restart
Displays the current SSL/TLS cipher, protocol and certificate chain in the Add-on bar and Site ID dialog
eQuakeAlert! Requires Restart
Have you ever thought of getting alerts on land disasters like earthquakes, right on your desktop? eQuakeAlert! is the solution for that!
Certificate Patrol Requires Restart
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
Addons Recent Updates Requires Restart
Show more addons recent updates
DSLR Notifier 2
Updated version of the original DSLR Notifier, created by Ryan Flint, which enables members of Dsl/Broadbandreports.com to keep tabs on their instant messages and updated...
Classic Pop-up Alerts
This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0
Disable Addon Compatibility Checks (Version 4-56)
Reinstates the extensions.checkCompatibility preference.
MinimizeToTray revived Requires Restart
Minimizes windows into the system tray.
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.
Only Minor Update Requires Restart
Applies only minor updates of the application.
mozCleaner
Cleans your Firefox, Thunderbird, SeaMonkey, Fennec (unstable), Instantbird and BlueGriffon.
WorldIP - Geo Add-on with Security Features Requires Restart
Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter
N0HR Propfire Requires Restart
HF radio propagation status displayed in your browser status bar. Shortwave radio enthusiasts, ham radio operators and others can use this to monitor solar conditions that impact radio propagation. Usage, updates and support can be found at...
hitsniffer visitors monitoring Requires Restart
hitsniffer analytics is a powerful and simple to use real time visitors activity monitoring tool for your website and blog. allows you to monitor your website visitors live and get extreme useful stats data.
Yahoo! Mail Notifier Requires Restart
This extension notifies you when new messages arrive in your Yahoo mailbox.
Cache Offline Alert Restorer Requires Restart
Restores the alert when a website asks to store data for offline use.
To create your own collections, you must have a Mozilla Add-ons account.