Blacklist AutoClose
Automatically close all blacklisted webpages specified by the user.
870 users
Authenticator - 2FA
This extension allows users to save and generate two-factor authentication codes. You can add your account 2FA codes with all data stored locally (no tracking whatsoever).
870 users
Onion Browser Button
Easily browse the internet using TOR proxy with just one click!
869 users
SAML Message Decoder
This tool helps you debug your SAML based SSO/SLO implementations. It runs in the background, collecting SAML messages as they are sent and received by the browser.
861 users
YouTube no Buffer (no autoplay)
Prevents YouTube HTML5 and Flash players from auto-buffering (auto-playing) videos
861 users
PocketUniverse
We protect your web3 assets.
859 users
Website and IP address blocker
Block Websites and IP address. Additional feature: Option to only block the homepage.
859 users
Trufflehog
Sniffing out credentials
856 users
IPBurger Proxy & VPN
IPBurger Extension is an advanced proxy management tool that enhances Firefox's limited proxying capabilities. IPBurger provides premium Proxies & VPN for Business.
853 users
nos2x-fox
Nostr Signer Extension (for Firefox)
848 users
OpiekunWEB
Extension for OpiekunWEB content filter application.
846 users
AVG Online Security
AVG Browser Security and Web Reputation Plugin. Offering protection against known phishing and malware sites, improving your browsing overall browsing experience with crowd sourced web reputation rating.
846 users
Twake Pass
Twake Pass, the French and open source password manager application of your Twake Workplace that makes you the Internet easier by helping you to create, save and autofill strong passwords for all your accounts so you can browse securely online.
844 users
Speed Tweaks
Speed up your browser with 7 tweaks via toolbar popup.
839 users
Rainbow
Rainbow is a fun, simple, and secure Ethereum wallet that makes managing your assets a joy. Available in public Beta.
838 users
StealthSurf VPN
Браузерное расширение для пользователей сервиса. Подключайтесь к своим конфигам прямо из браузера — без лишних настроек.
828 users
show-my-ip
This add-on allows you to view your IP address from your browser without having to navigate to sites like https://www.whatismyip.com/ Furthermore, as this add-on is open source, you don't need to be worried about your privacy.
821 users
Expire history by days
Allows to expire history older than a fixed amount of days.
819 users
Aionda Mail (TrashMail): Disposable Temp Mail
Create free disposable email addresses with Aionda Mail (formerly TrashMail). Paste them directly into forms to protect yourself from spam. Zero-knowledge login and optional MITM protection included.
818 users
Distraction Free Reddit
Remove the distracting parts of reddit and focus only on what really matters to you.
816 users
Open in Private Mode
Open the active tab in a private window via toolbar button or context-menu.
815 users
TikTok Container
TikTok Container isolates your TikTok activity from the rest of your web activity in order to prevent ByteDance from tracking you outside of the TikTok ecosystem via third party cookies. Not made by Mozilla.
813 users
Referer Modifier
Modify the Referer header of HTTP requests: Remove, shorten, replace with custom data, or keep the Referer depending on the target domain.
806 users
VPN для YouTube, Discord
GhostGram VPN — браузерное расширение для обхода блокировок YouTube, Discord, WhatsApp, Instagram и онлайн-звонков в России. Быстрое подключение из браузера, выбор сервера и переключение режимов HTTPS/SOCKS5 в один клик ⚡🔐
806 users
Modern Kiosk
Kiosk functionality extension for Firefox browsers
805 users