Privacy & Security

Most Popular See all »

  • 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).
    19,418,734 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.
    2,078,029 users
  • Ghostery

    Privacy & Security
    Rated 5 out of 5 stars (1,165)
    Protect your privacy. See who's tracking your web browsing and block them with Ghostery.
    1,365,080 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.
    1,156,741 users
  • Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
    • Green – The site is trusted
    • Yellow – Be cautious
    • Red – Online threats detected
    1,002,670 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**
    701,494 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'!
    541,190 users
  • anonymoX

    Privacy & Security
    Rated 4 out of 5 stars (169)
    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
    516,497 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.
    358,738 users
  • LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
    324,006 users
  • In some countries YouTube videos are blocked! Unblock them with this Addon.
    Supported countries: Germany, Netherlands, Spain, ...? not US compatible
    Status+Support: proxtube.com & Twitter: twitter.com/ProxTube (EN/DE)
    289,566 users
  • Blur

    Social & Communication
    Rated 3 out of 5 stars (681)
    Protect your Passwords, Payments, and Privacy.
    273,162 users
  • Disconnect

    Privacy & Security
    Rated 4 out of 5 stars (144)
    Make the web faster, more private, and more secure.
    252,037 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.
    248,964 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.
    221,926 users
  • Public Fox

    Privacy & Security
    Rated 4 out of 5 stars (165)
    Block downloads, lock down bookmarks/addons/downloads with a password.
    205,489 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.
    196,144 users
  • This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
    174,010 users

Top Rated See all »

  • Best Proxy Switcher was developed by the team, who provides proxy service since 2004 year. You can use Best Proxy Switcher with your own proxy or use 3 day FREE trial to let it download most recently checked list from our web site automatically!
    22,499 users
  • Permanently hides the Ads panel on the right side of New Yahoo! Mail, the 'Sponsored' email at the Top, and ads on the Left to give you a full-width Premium email experience for free! The other option, of course is to pay $50 a year to Yahoo! Inc. :)
    30,580 users
  • This extension prevents Google, Yahoo and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.
    63,075 users
  • Private Tab

    Tabs
    Rated 5 out of 5 stars (188)
    Adds private tabs.
    70,225 users
  • Restore "Click to Play" ability of per-element for Firefox 36 and above.
    10,056 users
  • An extension to silently generate a TinyURL for your current page at the click of a button. Also shows you where TinyURLs on the web will take you.
    22,579 users
  • Finally, an efficient blocker. Easy on CPU and memory.
    169,397 users
  • 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).
    19,418,734 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.
    1,156,741 users
  • Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter
    40,193 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.
    248,964 users
  • Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. It includes many extra privacy enhancing options
    29,151 users
  • Adds the ability to create and edit entries in the password manager.
    87,849 users
  • Watch age restricted YouTube videos without signing in.
    8,926 users
  • Policeman

    Privacy & Security
    Rated 5 out of 5 stars (39)
    Policeman gives you precise control over what web requests are allowed. Create rules based on domain name and type of resource being requested. It can also be used to improve privacy or block cross-site scripts.
    3,613 users
  • Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.

    Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.

    Control for which webpage form history is saved or not.
    26,544 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.
    2,078,029 users
  • KeeFox

    Privacy & Security
    Rated 5 out of 5 stars (1,008)
    Simple and secure password management. Login automatically, never forget another password, stay in control of your passwords and improve their security. Powered by the world-renowned KeePass Password Safe.
    50,742 users

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See all 1459 extensions in Privacy & Security »