Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Firefox Multi-Account Containers
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
123,916 users
Ecosia — The search engine that plants trees!
Ecosia is a search engine that uses 80% of its profits from ad revenue to plant trees. By searching with Ecosia you can help the environment for free. This extension adds Ecosia.org as the default search engine to your Firefox browser. Give it a try!
206,126 users
FoxClocks
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
33,757 users
AdBlock for Firefox
The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.
997,363 users
Adblock
Adblock Features: ☆ Adblock blocks ALL ads on ALL websites ☆ Antivirus and anti-malware ☆ Performance enhancer, improves browsing speed ☆ Adblock of ads, banners and pre-rolls on YouTube ☆ No more Banner, PopUp, PopUnder ☆ INSTALL ADBLOCK NOW!
15,696 users
Classic Theme Restorer (Fx29-56)
Squared tabs, application menu, add-on bar, small button view and many more 'old' features for 'Firefox 29-56', not for Firefox 57+! >Latest builds on Github!<
195,863 users
Incognito Adblocker
Ad Blocking, remastered. Incognito Adblocker took all of the best ad blocking and privacy protection features you’d expect in an adblocker extension and advanced them to create the best adblock extension yet.
2,989 users
Reopen Closed Tabs
Left click reopens the last closed tab. Right click to see the list of recently closed tabs.
745 users
YouTube to MP3
Download YouTube video as Mp3 right from YouTube with one click! On-page plugin to download from YouTube to Mp3! 1) Convert video from YouTube to Mp3. 2) Download Mp3.
1,411 users
Uncheck Stay-signed-in for Google Login
Uncheck "Stay signed in" automatically for Google Login (Gmail, Google Drive, etc...)
1,050 users
The Dark Side of Youtube ™
Black theme for YouTube great for night-time. Ads-free thanks to a native YouTube ad blocker. Enjoy YouTube again. Join us on the dark-side of YouTube!
1,113 users
Search4Musix
Search music straight from your address bar! Just type in M, than press TAB and type in artist or song. Looking for a favorite Song use search4musix.
1,429 users