Stealthy
Does your country/organization block you from facebook, youtube or others? Is the service you want unavailable in your country? Stealthy is the solution for you. Unlike other extensions we do the work of look for fast proxies for you.
6,350 users
Web Developer
The Web Developer extension adds various web developer tools to the browser.
92,279 users
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
197,194 users
Adblock Plus
One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, YouTube and all other websites. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
3,821,952 users
Theme Font & Size Changer
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
7,270 users
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
548,937 users
Turn Off the Lights for Firefox
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.
42,834 users
FoxyProxy Standard
FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. No paid accounts are necessary; bring your own proxies or buy from any vendor. The original proxy tool, since 2006.
209,818 users
Stylish - Custom themes for any website
Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.
36,741 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.
136,945 users
Webmail Ad Blocker
Remove advertising clutter from your web-based email. Expand your viewable area by blocking and removing ads on the right-hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.
28,276 users
Bloody Vikings!
Simplifies the use of temporary e-mail addresses in order to protect your real address from spam. Supports inter alia 10minutemail.com and anonbox.net.
3,877 users
VT4Browsers
Scan your downloads with VirusTotal before storing them, free and easy. More information at: https://docs.virustotal.com/docs/browser-extensions#vt4browsers. Contribute your domain name resolutions to the security community.
5,673 users
ProxTube - Unblock YouTube
In some countries YouTube videos are blocked! Unblock them with this Addon. Supported countries: Germany, Netherlands, Spain, ...? not US compatible Status+Support: proxtube.com & Twitter: twitter.com/ProxTube (EN/DE)
17,063 users
MailHops
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
5 users
