To use these add-ons, you'll need to download Firefox.

RECOMMENDED

NoScript Security Suite

Only allow web content to run from sites you trust. Surf securely.
Get the extension

Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.
See all extensions
Anti-tracking extensions
Anti-tracking extensions
See staff picks
Essential add-ons
Essential add-ons
See staff picks
Steam extensions
Steam extensions
See staff picks
Tab managers
  • Tab Session Manager

    Tab Session Manager

    Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.

    143,345 users

  • Tree Style Tab

    Tree Style Tab

    Show tabs like a tree.

    184,518 users

  • OneTab

    OneTab

    OneTab - Too many tabs? Convert tabs to a list and reduce browser memory

    157,741 users

  • Tabliss - New Tab

    Tabliss - New Tab

    A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.

    74,306 users

Social media extensions
  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    866,549 users

  • BetterTTV

    BetterTTV

    Enhances Twitch and YouTube with new features, emotes, and more.

    473,879 users

  • Facebook Container

    Facebook Container

    Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

    933,246 users

  • Augmented Steam

    Augmented Steam

    Augments your Steam Experience

    59,917 users

Accessibility extensions
  • Dark Reader

    Dark Reader

    Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.

    1,199,834 users

  • Read Aloud: A Text to Speech Voice Reader

    Read Aloud: A Text to Speech Voice Reader

    Read out loud the current web-page article with one click. Supports 40+ languages.

    191,749 users

  • Dark Mode

    Dark Mode

    Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.

    38,361 users

  • Sidebery

    Sidebery

    Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.

    62,843 users

“reddit” tagged extensions
  • Feedbro

    Feedbro

    Advanced Feed Reader - Read news & blogs or any RSS/Atom/RDF source.

    44,162 users

  • Adaptive Tab Bar Color

    Adaptive Tab Bar Color

    Changes the color of Firefox theme to match the website’s appearance.

    35,128 users

  • Reddit Enhancement Suite

    Reddit Enhancement Suite

    Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.

    299,314 users

  • Old Reddit Redirect

    Old Reddit Redirect

    Ensure Reddit always loads the old design

    62,268 users