Video Downloader
Download video from your favorite sites with just one click!
10,178 users
User-Agent Switcher
Easily override the browser's User-Agent string
61,669 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
77,356 users
iCloud Bookmarks
Keep your Firefox bookmarks on Windows up to date with your Safari bookmarks on iPhone, iPad, and Mac with the iCloud Bookmarks extension for Firefox.
155,049 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
210,876 users
Simple Tab Groups
Create, modify, and quickly change tab groups
80,478 users
7,063 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
153,922 users
Belgium eID
Use the Belgian electronic identity card (eID) in Firefox
159,642 users
Season Pass Pass
Travel back in time and pull rewards from any previous season pass
18,589 users
Firefox Relay
Firefox Relay lets you generate email aliases that forward to your real inbox. Use it to hide your real email address and protect yourself from hackers and unwanted mail.
212,213 users
359 users
Download Manager (S3)
View and manage downloads from a tidy status bar.
60,493 users
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
151,702 users
YouTube Download
Download video from YouTube and many other popular sites in your preferred file format: MP3, MP4, WEBM and more!
4,440 users
Easy Youtube Video Downloader
No# 1 Rated Youtube Video Downloader for firefox web-browser with MP3 and Full-HD downloads. Instant, one-click Youtube video downloader with high-quality 256Kbps/128Kbps MP3 and Full-HD video downloading options.
5,566 users
Block Site
A customizable, password-protected website blocker and redirector.
72,430 users
French spelling dictionary
Spelling dictionary for the French language.
302,447 users
腾讯翻译
腾讯翻译是腾讯发布的一款翻译扩展。
46,324 users
Zoom Extension
Recommended, support FireFox 45+. The Zoom Firefox Extension allows participants to schedule Zoom cloud meetings directly from Google Calendar. you can start an instant meeting or schedule a future meeting via a button.
260,508 users
Firefox Color
Build, save and share beautiful Firefox themes.
119,440 users
anonymoX
Easy anonymous web browsing. – Change your IP-Address and country – Visit blocked or censored websites. – Delete cookies, show your public ip, and more We provide the proxy servers, no external proxies or other programs required
27,522 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
79,316 users
BTRoblox - Making Roblox Better
BTRoblox, or Better Roblox, is an extension that aims to enhance Roblox's website by modifying the look and adding to the core website functionality by adding a plethora of new features.
48,450 users
ImTranslator: Translator, Dictionary, TTS
COMPLETELY REDESIGNED TRANSLATOR FOR FIREFOX ImTranslator translates text, words, webpages between more than 100 languages. NEW: Inline Translator, Dictionary, access to Google Translate, Microsoft Translator. Unique on the fly localization.
135,949 users