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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 (688)
10,597 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 (64)
6,233 weekly downloads

Tab Auto Refresh Compatible with Firefox 57+ Featured

Automatically refresh tabs based on custom time intervals

Rated 4 out of 5 stars (15)
3,034 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 (42)
2,956 weekly downloads

JavaScript Warning Compatible with Firefox 57+

You can store websites in a list which are not supposed to execute JavaScript code. If they try to do so the Add-on warns you.

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

Gmail™ Notifier (restartless)

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

Rated 4 out of 5 stars (286)
2,640 weekly downloads

MinimizeToTray revived Requires Restart

Minimizes windows into the system tray.

Rated 4 out of 5 stars (338)
2,543 weekly downloads

AdBlocker Lite Compatible with Firefox 57+

block ads seamlessly on popular websites

Rated 5 out of 5 stars (28)
2,452 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 (179)
2,428 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 (8)
2,242 weekly downloads

Gmail™ Notifier + Compatible with Firefox 57+

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 3 out of 5 stars (98)
1,945 weekly downloads

Messenger for WhatsApp™

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

Rated 4 out of 5 stars (24)
1,780 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 (20)
1,765 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 (308)
1,568 weekly downloads

The Camelizer - Price Tracker Compatible with Firefox 57+

Add price history charts and price watch features to Firefox when viewing product pages on Amazon. Use it to make informed purchasing decisions and to receive price drop alerts via email, Twitter, or RSS feed.

Rated 4 out of 5 stars (95)
1,410 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 (491)
1,289 weekly downloads

Checker Plus for Gmail™ Compatible with Firefox 57+

Get desktop notifications, read, listen or delete emails without opening Gmail or Inbox by Gmail & easily manage multiple accounts.

Rated 4 out of 5 stars (62)
1,265 weekly downloads

Tomato Clock Compatible with Firefox 57+ Featured

Tomato Clock is a simple browser extension for managing your productivity.

Rated 4 out of 5 stars (21)
1,237 weekly downloads

MyKey Interface Requires Restart

Interface between Firefox and MyKey.

Rated 4 out of 5 stars (23)
1,176 weekly downloads

Tab Suspender (Tab Unloader) Compatible with Firefox 57+

Automatically suspend (hibernate) inactive tabs to free up system resources

Rated 4 out of 5 stars (28)
1,075 weekly downloads