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

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Simple Translate

Instantly translate any selected text on web pages.
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Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.
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Extension Starter Pack
Extension Starter Pack
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Privacy & Security
Privacy & Security
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Twitch extensions
Twitch extensions
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Tab managers
  • Auto Tab Discard

    Auto Tab Discard

    Increase browser speed and reduce memory load and when you have numerous open tabs.

    89,974 users

  • OneTab

    OneTab

    Save up to 95% memory and reduce tab clutter

    157,315 users

  • Tab Session Manager

    Tab Session Manager

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

    154,483 users

  • Tab Reloader (page auto refresh)

    Tab Reloader (page auto refresh)

    An easy-to-use tab reloader with custom reloading time settings for individual tabs

    79,873 users

Social media extensions
  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    907,303 users

  • BetterTTV

    BetterTTV

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

    482,055 users

  • Augmented Steam

    Augmented Steam

    Augments your Steam Experience

    62,575 users

  • Control Panel for Twitter

    Control Panel for Twitter

    Gives you more control over Twitter and adds missing features and UI improvements

    50,570 users

“scholar” tagged extensions
  • Web Archives

    Web Archives

    View archived and cached versions of web pages on various search engines, such as the Wayback Machine and Archive․is.

    67,647 users

  • Notefox: websites notes

    Notefox: websites notes

    Take notes on every website in a smart and simple way!

    12,569 users

  • Power Thesaurus

    Power Thesaurus

    Use the power of synonyms by button in toolbar, right-click or by word selection on any page.

    7,178 users

  • Google Scholar Button

    Google Scholar Button

    Lookup scholarly articles as you browse the web.

    95,994 users