NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
292,025 users
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...
113,060 users
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
35,456 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
22,908 users
Livemarks
Get auto-updated RSS feed bookmark folders.
14,240 users
Keepa.com - Amazon Price Tracker
→ Price History charts → Price Drop & Availability Alerts → Over 1 billion tracked products → Supports Amazon .com | .co.uk | .de | .co.jp | .fr | .ca | .it | .es | .in | .mx
224,287 users
GNOME Shell integration
This extension provides integration with GNOME Shell and the corresponding extensions repository https://extensions.gnome.org
151,753 users
The Camelizer - Price Tracker
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.
69,317 users
Tab Auto Refresh
Automatically refresh tabs based on custom time intervals
49,632 users
Auto Refresh Page
Refresh web pages automatically. Auto-refresh and page monitor with specified time intervals.
37,126 users
Gmail™ Notifier (restartless)
Multiple account (or label) Gmail notifier (without storing passwords)
25,470 users
PhishWall
PhishWall
23,549 users
Avast Online Security & Privacy
Secure your Mozilla Firefox browser against real-time online threats, trackers, and scams. We’ll check every site you visit, from Facebook to your bank, so nothing puts you or your data at risk. Join a growing community of 400 million Avast users.
22,460 users
Checker Plus for Gmail
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21,765 users
WEB.DE MailCheck
E-Mail Notifier für mehrere FreeMail Postfächer
21,389 users
GMX MailCheck für Ihren Browser
E-Mail Notifier für mehrere FreeMail Postfächer
17,294 users
Censor Tracker
Censor Tracker is an extension that allows you to bypass Internet censorship, warns you about sites that transmit your data with government agencies, and detect new acts of censorship.
14,380 users
Distill Web Monitor
Monitor website changes and get SMS, email or push notifications on change.
13,692 users
Calendly: Meeting Scheduling Software
Eliminate the back-and-forth of scheduling. Manage your meetings, scheduling links, and contacts — all in one place, from wherever you’re already working online.
10,769 users
G App Launcher (Google™ Shortcuts)
Previously known as Google™ Shortcuts.Display all Google services as buttons or as a space-saving dropdown menu next to your address bar. Reach services like Gmail, Google Drive, Maps, Calendar, and many more in a single click from your browser.
8,273 users
easyfundraising Donation Reminder
Never miss a donation for your charity or good cause again with the easyfundraising Donation Reminder.
6,956 users
Country Flag +
Shows country flag based on the server location of the active tab's url
6,123 users
Check4Change
Check4Change (aka C4C) is a simple extension that allows you to select a part of a web-page, and get notified when it changes.
5,676 users
Timer (alarm, timer and stopwatch)
Stylish timer combined with stopwatch and alarm for your browser.
5,289 users
Reload All Tabs
Reload all tabs using keyboard shortcut or toolbar button.
4,703 users