Mozilla Firefox Plugins, Add-ons and extension Page 2 of 70

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  1. LastPass icon
     1645 likes

    Online encrypted password storage with password generation, dark web monitoring, and two-factor authentication. Manage with security dashboard.

    • Password Manager
    • FreemiumProprietary
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • BSD
    • iPad
    • Microsoft Edge
    • Internet Explorer
    • Vivaldi
    • Google Chrome
    • Maxthon Cloud Browser
    • Opera
    • Mozilla Firefox
    LastPass screenshot 1
    229 alternatives
    2.6
    Poor45 reviews
  2. Karakeep icon
     77 likes

    Open-source, self-hostable tool for bookmarks, notes, and images with AI-powered tagging, full-text search, Chrome extension, and web dark mode.

    • Bookmark Manager
    • FreeOpen Source
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Google Chrome
    • Docker
    • Mozilla Firefox
    Karakeep screenshot 1
    87 alternatives
  3. Privacy Badger icon
     314 likes

    Privacy Badger is a browser-add on tool that analyzes sites to detect and disallow content that tracks you in an objectionable, non-consensual manner. When you visit websites, your copy of Privacy Badger keeps note of the "third party" domains that embed images...

    • Ad Blocker
    • FreeOpen Source
    • Microsoft Edge
    • Google Chrome
    • Opera
    • Mozilla Firefox
    Overview of Privacy Badger extension
    66 alternatives
    4.7
    Excellent16 reviews
  4. Product Hunt icon
     366 likes

    Product Hunt is a curation of the best new products, every day. Discover the latest mobile apps, websites, and technology products that everyone's talking about.

    Product Hunt screenshot 1
    223 alternatives
    3.2
    Fair10 reviews
  5. NoScript icon
     359 likes

    The NoScript Firefox extension provides extra protection for Firefox, Seamonkey and other mozilla-based browsers: this free, open source add-on allows JavaScript, Java, Flash and other plugins to be executed only by trusted web sites of your choice (e.g. your online bank).

    • Privacy Tool
    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD
    • Google Chrome
    • SeaMonkey
    • Mozilla Firefox
    Diablog of blocked scripts
    23 alternatives
    4.1
    Very Good12 reviews
  6. Dark Reader icon
     169 likes

    This eye-care extension enables night mode creating dark themes for websites on the fly. Dark Reader inverts bright colors making them high contrast and easy to read at night.

    • Dark Mode Enforcer
    • FreeOpen Source
    • iPhone
    • iPad
    • Microsoft Edge
    • Google Chrome
    • Safari
    • Thunderbird
    • Mozilla Firefox
    Dark Reader screenshot 1
    23 alternatives
    4.6
    Excellent22 reviews
  7. "Terms of Service; Didn't Read" (short: ToS;DR) is a project started in June 2012 to help fix the "biggest lie on the web": almost no one really reads the terms of service we agree to all the time.

    • FreeOpen Source
    • Mac
    • Online
    • iPhone
    • Microsoft Edge
    • Vivaldi
    • Google Chrome
    • Safari
    • Tor
    • Opera
    • Brave
    • Mozilla Firefox
    • Android
    • F-Droid
    Website
Home Page
    12 alternatives
    4.5
    Excellent11 reviews
  8. SingleFile icon
     92 likes

    SingleFile is an extension that helps you to archive a complete page into a single HTML file or HTM-File with Google Chrome and Chromium.

    • FreeOpen Source
    • Microsoft Edge
    • Google Chrome
    • Safari
    • Mozilla Firefox
    SingleFile screenshot 1
    11 alternatives
  9. TagSpaces icon
     243 likes

    Privacy-focused, cross-platform tool for tagging, browsing and managing files or folders, with note-taking, Kanban, S3 cloud support, and web clipping.

    • Note-taking Tool
    • FreemiumOpen Source
    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Microsoft Edge
    • Google Chrome
    • Mozilla Firefox
    Cross-platform file tagging
    97 alternatives
    2.9
    Poor11 reviews
  10. LanguageTool icon
     184 likes

    An AI-powered proofreading tool supports over 20 languages, offering free and premium versions with extensive grammar checks across multiple apps.

    • Grammar Checker
    • FreemiumOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • iPhone
    • iPad
    • Microsoft Edge
    • ONLYOFFICE
    • Google Chrome
    • Microsoft Outlook
    • Safari
    • Visual Studio Code
    • Microsoft Word
    • Eclipse
    • TinyMCE
    • Google Docs
    • Thunderbird
    • Vim
    • Sublime Text
    • GNU Emacs
    • Opera
    • Gmail
    • LibreOffice
    • Apache OpenOffice
    • Mozilla Firefox
    • LibreOffice - Writer
    • Cloudron
    LanguageTool screenshot 1
    94 alternatives
    3.8
    Good20 reviews
  11. Todoist icon
     434 likes

    Manages tasks across all platforms with advanced language recognition. It integrates with 60+ tools, and offers templates for various projects.

    • Todo List Manager
    • FreemiumProprietary
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • AppImageHub
    • Apple Watch
    • Snapcraft
    • Google Chrome
    • Flathub
    • Microsoft Outlook
    • Android Wear
    • Safari
    • Gmail
    • Mozilla Firefox
    Todoist screenshot 1
    161 alternatives
    3.4
    Fair25 reviews
  12. Floccus icon
     103 likes

    Sync your bookmarks privately across browsers and devices.

    • Bookmark Manager
    • FreeOpen Source
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Microsoft Edge
    • Vivaldi
    • Google Chrome
    • Nextcloud
    • Google Drive
    • F-Droid
    • Brave
    • Chromium
    • Mozilla Firefox
    Floccus screenshot 1
    53 alternatives
    4.8
    Excellent17 reviews
  13. AliasVault icon
     40 likes

    AliasVault is an end-to-end encrypted password and alias manager that protects your privacy by creating alternative identities, passwords and email addresses for every website you use.

    • Password Manager
    • FreeOpen Source
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Microsoft Edge
    • Google Chrome
    • Safari
    • Docker
    • Mozilla Firefox
    AliasVault screenshot 1
    75 alternatives
  14. 1Password icon
     621 likes

    Securely manage passwords across devices with auto-fill and vulnerability alerts, organizing passwords and notes for quick access and synchronization.

    • Password Manager
    • PaidProprietary
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Apple Watch
    • Microsoft Edge
    • Vivaldi
    • Google Chrome
    • Safari
    • Yandex Browser
    • Opera
    • Brave
    • Mozilla Firefox
    • Snapcraft
    Desktop & Mobile Apps
    57 alternatives
    3.7
    Good31 reviews
  15. Windscribe icon
     170 likes

    Windscribe is a desktop application and browser extension that work together to block ads and trackers, restore access to blocked content and help you safeguard your privacy online.

    • VPN Service
    • FreemiumOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Microsoft Edge
    • Google Chrome
    • Apple TV
    • F-Droid
    • Android TV
    • Fire TV
    • Mozilla Firefox
    • HUAWEI AppGallery
    Windscribe screenshot 1
    Windscribe screenshot 2
    Windscribe screenshot 3
    215 alternatives
    4.7
    Excellent15 reviews
  16. Firefox Sync icon
     297 likes

    Lets you sync your data and preferences (such as your bookmarks, history, passwords, open tabs and installed add-ons) across all your devices. It's free to use.

    • Bookmark Manager
    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Mozilla Firefox
    Firefox Sync screenshot 1
    37 alternatives
  17. Kiwix icon
     110 likes

    Kiwix enables you to have the whole Wikipedia at hand wherever you go! You don't need Internet, everything is stored on your computer, USB flash drive or DVD!.

    • Encyclopedia
    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Wine
    • Flathub
    • F-Droid
    • Google Chrome
    • Microsoft Edge
    • Mozilla Firefox
    Kiwix viewing a page on Paris
    23 alternatives
  18. Ecosia icon
     149 likes

    Ecosia is a green search engine that donates at least 80% of its profits from search ad revenue and online shopping to a reforestation program, currently in Burkina Faso. In November 2015 Ecosia celebrated 3 million planted trees and $5 Million donated for the environment.

    • Web Search Engine
    • FreeProprietary
    • Online
    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
    • Microsoft Edge
    • Google Chrome
    • Mozilla Firefox
    • HUAWEI AppGallery
    Ecosia screenshot 1
    111 alternatives
    4.1
    Very Good16 reviews
  19. Qwant icon
     175 likes

    Qwant is a European web search engine, launched in July 2013 and operated from Paris. It uses Bing in order to provide people with web search results. It claims not to employ user tracking and doesn't personalize search results in order to avoid trapping users in a filter...

    • Web Search Engine
    • FreeProprietary
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    • Mozilla Firefox
    • HUAWEI AppGallery
    Qwant screenshot 1
    107 alternatives
    3.7
    Good14 reviews
  20. TinEye icon
     268 likes

    Efficient reverse image search engine that identifies exact usages and altered images online, provides source information, and ensures ad-free, lightweight experience.

    • Image Search Engine
    • Free PersonalProprietary
    • Online
    • Microsoft Edge
    • Google Chrome
    • Opera
    • Mozilla Firefox
    TinEye screenshot 1
    42 alternatives