Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
83,546 users
Emoji Cheatsheet
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook. Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
86,199 users
Enhancer for YouTube™
Tons of features to improve your user experience on YouTube™.
360,353 users
Tab notifier
Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!
1,738 users
Classic Theme Restorer (Fx29-56)
Squared tabs, application button menu, add-on bar, small button view, old search and many more 'old' features for 'Firefox 29-56' only, not for Firefox Quantum (57+)! >Latest builds only on Github!<
196,985 users
Flappy Bird New Tab
Play game Flappy Bird when you open a new tab. Try to fly the bird as far as you can without hitting a pipe!
1,927 users
Tab Groups
Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch to a specific one.
53,475 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.
11,971 users
Adblock & Adremover for Firefox
★ ★ ★ ★ ★ Adblock Features: + Adblock on all websites. + Malware- and Adblock. + Performance enhancement in browsing speed. + Adblock of ads, banners and pre-rolls on Youtube. + No more Banner, PopUp, PopUnder + INSTALL ADBLOCK
24,652 users
Adblocker for YouTube™
Adblocker Features: + Adblocker on every Youtube Video + Malware- and Adblocker. + Performance enhancement in browsing speed. + Adblocker of ads, banners and pre-rolls on Youtube. + No more Banner, PopUp, PopUnder + INSTALL ADBLOCKER
15,316 users
YouTube Video Download
Complete YouTube video download is the ultimate YouTube downloader that allows you to save any video from YouTube to your favorite format (MP3, MP4, WEBM, M4A, 3GP, Subtitles and thumbnails)
6,310 users
Instagram App
Run Instagram on Desktop just like your favorite mobile app. Enjoy the most beautiful Instagram Web client. Turn on Instagram Night mode in just few clicks
4,317 users