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Flagfox

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...

Rated 5 out of 5 stars (664)
10,336 weekly downloads

Gmail™ Notifier (restartless) Featured

Multiple account (or label) Gmail notifier (without storing passwords)

Rated 4 out of 5 stars (266)
5,314 weekly downloads

MinimizeToTray revived Requires Restart

Minimizes windows into the system tray.

Rated 5 out of 5 stars (318)
4,095 weekly downloads

Popup Blocker (strict) Compatible with Firefox 57+ Featured

Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address

Rated 4 out of 5 stars (36)
3,817 weekly downloads

Gmail™ Notifier + Featured

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.

Rated 4 out of 5 stars (84)
3,811 weekly downloads

Tab notifier Compatible with Firefox 57+ Featured

Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!

Rated 4 out of 5 stars (45)
2,697 weekly downloads

Keepa.com - Amazon Price Tracker Compatible with Firefox 57+

→ Price History charts
→ Price Drop & Availability Alerts
→ Daily Drops, an overview of recent price drops
→ Huge frequently updated product database
→ Supports Amazon .com | .co.uk | .de | .co.jp | .fr | .ca | .cn | .it | .es | .in | .mx | .br

Rated 5 out of 5 stars (30)
2,498 weekly downloads

GNOME Shell integration Compatible with Firefox 57+

This extension provides integration with GNOME Shell and the corresponding extensions repository https://extensions.gnome.org

Rated 4 out of 5 stars (15)
2,495 weekly downloads

ReminderFox Requires Restart

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

Rated 4 out of 5 stars (486)
2,356 weekly downloads

Messenger for WhatsApp™

Access to WhatsApp Web from within a toolbar panel and get badge notification of unread threads

Rated 5 out of 5 stars (18)
2,251 weekly downloads

eBay for Firefox Compatible with Firefox 57+

See quick updates on all your activity while you browse the web with the official eBay app for Firefox.

Rated 2 out of 5 stars (284)
2,113 weekly downloads

Tab Memory Usage Featured

Tab Memory Usage displays the amount of memory is used by each tab

Rated 4 out of 5 stars (44)
1,802 weekly downloads

Messenger for Skype™ Web Featured

Access to Skype Web from within a toolbar panel. You can use this app to call your friends without the need to switch current browser tab

Rated 5 out of 5 stars (8)
1,605 weekly downloads

Panel View for Google™ Keep Featured

A handy and reliable extension designed to store your notes, lists and photos.

Rated 5 out of 5 stars (23)
1,593 weekly downloads

PDF Download Requires Restart

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

Rated 2 out of 5 stars (690)
1,583 weekly downloads

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

Rated 5 out of 5 stars (115)
1,537 weekly downloads

PlugIn-Checker Compatible with Firefox 57+

The easiest and simplest way to check for PlugIn-Updates. Never forget to install the newest safe versions.

Rated 4 out of 5 stars (11)
1,483 weekly downloads

Tab Auto Refresh Compatible with Firefox 57+

Automatically refresh tabs based on custom time intervals

Rated 5 out of 5 stars (6)
1,441 weekly downloads

AdBlocker Lite

block ads seamlessly on popular websites

Rated 4 out of 5 stars (31)
1,361 weekly downloads

Check4Change Requires Restart

Check4Change (aka C4C) is a simple extension that allows you to select a part of a web-page, and get notified when it changes.

Rated 4 out of 5 stars (161)
1,313 weekly downloads