Privacy & Security

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  • Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

    Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
    19,481,562 users
  • The best security you can get in a web browser!
    Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
    2,083,615 users
  • Ghostery

    Privacy & Security
    Rated 5 out of 5 stars (1,164)
    Protect your privacy. See who's tracking your web browsing and block them with Ghostery.
    1,372,870 users
  • Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.
    1,157,863 users
  • Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs to help you make informed decisions about whether to visit a site or not.
    1,007,928 users
  • Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.

    **This addon has been discontinued**
    708,804 users
  • Remove or manage a new and uncommon kind of cookies, better known as LSO's.The BetterPrivacy safeguard offers various ways to handle Flash-cookies set by Google, YouTube, Ebay and others...

    Latest updates: See bottom link 'version history'!
    545,163 users
  • anonymoX

    Privacy & Security
    Rated 4 out of 5 stars (167)
    Easy anonymous web browsing.
    – Change your IP-Address and country
    – Visit blocked or censored websites.
    – Delete cookies, show your public ip, and more

    We provide the proxy servers, no external proxies or other programs required
    502,578 users
  • Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.
    363,381 users
  • LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
    320,569 users
  • In some countries YouTube videos are blocked! Unblock them with this Addon.
    Supported countries: Germany, Netherlands, Spain, ...? not US compatible
    Status+Support: & Twitter: (EN/DE)
    298,457 users
  • Blur

    Social & Communication
    Rated 3 out of 5 stars (679)
    Protect your Passwords, Payments, and Privacy.
    277,465 users
  • Disconnect

    Privacy & Security
    Rated 4 out of 5 stars (144)
    Make the web faster, more private, and more secure.
    251,591 users
  • QuickJava

    Privacy & Security
    Rated 5 out of 5 stars (250)
    Allows quick enable and disable of Java, Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth.
    249,067 users
  • Public Fox

    Privacy & Security
    Rated 4 out of 5 stars (165)
    Block downloads, lock down bookmarks/addons/downloads with a password.
    208,728 users
  • Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.
    199,548 users
  • BlockSite

    Privacy & Security
    Rated 3 out of 5 stars (504)
    BlockSite is an extension, which automagically blocks websites of your choice. Additionally, this extension will disable all hyperlinks to these websites, by just displaying the link text without the clicking functionality.
    194,250 users
  • This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
    172,951 users

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