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Choose from thousands of extra features and styles to make Firefox your own.
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Minimeter Requires Restart
Monitor your provider's upload/download usage meter.
Not maintained anymore, looking for a developer, contact me if you're interested.
Gmail Manager Requires Restart
The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.
Yahoo! Mail Notifier Requires Restart
This extension notifies you when new messages arrive in your Yahoo mailbox.
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.*.
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.
whatmon Requires Restart
Monitor Whatever: a tiny Firefox extension called whatmon, which can monitor almost anything you wish to monitor. Number of logged on users? Current load average? Health of your LDAP servers? Mail server queues? No problem for...
AdRemind.Me Requires Restart
Want to keep your favourite Web sites alive even when you're using Adblock Plus? AdRemind.Me helps you to supporting your favourite Web sites in deactivating periodically Adblock Plus ad filters only on these sites for 20 seconds.
CRM-Integration ITSP-PBX Mobile Exchange Requires Restart
Integration of FreePBX-Swiss and OMP24-CRM
Cache Offline Alert Restorer Requires Restart
Restores the alert when a website asks to store data for offline use.
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.
mozCleaner
Cleans your Firefox, Thunderbird, SeaMonkey, Fennec (unstable), Instantbird and BlueGriffon.
Classic Pop-up Alerts
This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0
To create your own collections, you must have a Mozilla Add-ons account.