Security & Privacy
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
Free and improved ad blocker. Completely remove ALL ads. No "acceptable" ads or whitelisted advertisers, block tracking, block malware!
Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.
An icon that toggles the preference of blocking mixed active content.
Preference Name: security.mixed_content.block_active_content
uBlock Origin Featured
Finally, an efficient blocker. Easy on CPU and memory.
Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.
Block ads and manage proxy.
WebRTC leaks your actual IP addresses from behind your VPN, by default.
Bluhell Firewall Featured
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
한국 웹의 광고를 효율적으로 차단합니다.
Minimum and fast URL blocker.
Prevent boring messages like "disable your ad-blocker and refresh page to continue"
Removes the annoying link-conversion at Google Search / maps / ...
Simply toggle between three different popup blocking modes: allow all, allow requested or block all. Now with tracking protection.
Get rid of annoying cookie warnings from almost all 'infected' websites!
Send referers only when staying on the same domain.
You can whitelist domains with wildcards and configure other things, look in the preferences page of the addon in the addon manager.
Disable Youtube's annotations.
Block sites containing pornography, or any other kind of material, based on simple keyword lists.
Fix the web. Gets rid of a site's cookies and LocalStorage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be whitelisted.