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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)
346,559 users

Lucifox Requires Restart

Read EPUB e-books and browse OPDS catalogs.

Rated 4 out of 5 stars (22)
146,149 users

MinimizeToTray revived Requires Restart

Minimizes windows into the system tray.

Rated 4 out of 5 stars (337)
134,815 users

Gmail™ Notifier (restartless)

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

Rated 4 out of 5 stars (286)
74,424 users

Browser-Security

Browser Security - DER Schutz vor Phishing und Malware

Rated 4 out of 5 stars (18)
58,656 users

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)
57,934 users

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)
51,259 users

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)
40,126 users

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)
40,062 users

AdBlocker Lite Compatible with Firefox 57+

block ads seamlessly on popular websites

Rated 5 out of 5 stars (28)
34,886 users

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.

Rated 4 out of 5 stars (1,153)
32,697 users

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)
31,065 users

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 (663)
26,677 users

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)
24,518 users

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)
22,652 users

Tab Memory Usage

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

Rated 4 out of 5 stars (46)
21,984 users

PhishWall

PhishWall

Not yet rated
21,878 users

Add-on Update Checker Requires Restart

Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.

Rated 4 out of 5 stars (48)
20,410 users

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 (118)
20,225 users

Simple Popup Blocker

Simply toggle between three different popup blocking modes: allow all, allow requested or block all. Now with tracking protection.

Rated 4 out of 5 stars (39)
18,027 users