Open Source Firefox Alternatives for Linux

There are many alternatives to Mozilla Firefox for Linux if you are looking for a replacement. The best open source Linux alternative is Zen Browser. If that doesn't suit you, our users have ranked more than 100 alternatives to Mozilla Firefox and loads of them are open source and available for Linux so hopefully you can find a suitable replacement. Other interesting open source Linux alternatives to Mozilla Firefox are Brave, Tor Browser, LibreWolf and Helium Browser.

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Most Mozilla Firefox alternatives are Web Browsers, but you can also narrow the list to Ad Blockers or Email Clients. Other popular filters are iPhone, Kindle Fire, Mac, Linux and Android. You can also filter for EU-based alternatives if you prefer software from the European Union.
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Alternatives
Mozilla Firefox alternatives page was last updated

Alternatives list

  1. Zen Browser icon
     408 likes

    Experience a privacy-focused, open-source browser rich with features like vertical tabs, Split View, Zen Glance, and extensive security protocols. Built on Firefox, it's currently in beta, emphasizing privacy and adaptability, with future plans for horizontal tabs.

    135 Zen Browser alternatives

    Cost / License

    Application type

    Since

    • Since 2024

    Platforms

    • Windows
    • Mac
    • Linux
    • Flathub
    • Flatpak
    • AppImage
    Good alternative?
     
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    4
  2. Brave icon
     1349 likes

    Fast, secure browser integrating ad and tracker blockage, privacy features, and VPN. Offers seamless performance with data and battery optimization, faster loads by blocking pop-ups and ads. Safeguards user privacy with tracking protections and built-in brave search.

    286 Brave alternatives

    Cost / License

    Application type

    Since

    • Since 2016

    Platforms

    • Windows
    • Mac
    • Linux
    • Android
    • iPhone
    • iPad
    • Android Tablet
    • Epic Games Store
    • F-Droid
    • Flathub
    • US flagUnited States
    Brave screenshot 1
    Good alternative?
     
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    29
  3. Tor Browser icon
     1148 likes

    Experience true privacy online with a portable browser offering built-in proxy, encryption, and tracker blocking. Navigate without revealing location or browsing data, enjoying ad-free, secure surfing across platforms like Windows, Mac, Linux, and Android with no installation hassle.

    84 Tor Browser alternatives

    Cost / License

    Application type

    Since

    • Since 2012

    Platforms

    • Windows
    • Mac
    • Linux
    • OpenBSD
    • Android
    • Flathub
    Good alternative?
     
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    5
  4. LibreWolf icon
     415 likes

    LibreWolf is a community-maintained, privacy and performance-enhanced browser forked from Firefox, independent of Mozilla. It uses over 500 settings to limit telemetry, offers an Extensions Firewall, supports all major systems, and is developed free from corporate influence.

    114 LibreWolf alternatives

    Cost / License

    Application type

    Since

    • Since 2019

    Platforms

    • Windows
    • Mac
    • Linux
    • Debian
    • Arch Linux
    • OpenBSD
    • openSUSE
    • Fedora
    • Gentoo
    • Flathub
    Good alternative?
     
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    18
  5. Helium Browser icon
     150 likes

    Chromium browser with open-source ad, tracker, and cryptominer blocking by default, zero tracking, customizable privacy controls, proxy-anonymized extension downloads, split view, and efficient, unobtrusive interface for full extension compatibility.

    88 Helium Browser alternatives

    Cost / License

    Application type

    Since

    • Since 2025

    Platforms

    • Windows
    • Mac
    • Linux
    Good alternative?
     
  6. Waterfox icon
     470 likes

    Utilize Waterfox for a high-speed, private browsing experience on 64-bit systems. Built on Firefox, it taps into Intel's C++ compiler for optimal performance, supports legacy extensions, allows full customization, and blocks ads by default, ensuring utmost control and security.

    110 Waterfox alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Since

    • Since 2011

    Platforms

    • Windows
    • Mac
    • Linux
    • Android
    • Android Tablet
    • Flathub
    • Flatpak
    • GB flagUnited Kingdom
    Waterfox screenshot 1
    Good alternative?
     
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    24
  7. Floorp icon
     157 likes

    Open-source browser based on Firefox, combining advanced privacy and tracking protection with a Chromium-inspired interface, cross-platform support, customization options, compatibility with Firefox extensions, regular updates, efficient performance, and multilingual support.

    156 Floorp alternatives

    Cost / License

    Application type

    Since

    • Since 2022

    Platforms

    • Windows
    • Mac
    • Linux
    • iPhone
    • Flathub
    • Snapcraft
    • Flatpak
    Good alternative?
     
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    4
  8. Chromium icon
     1157 likes

    Open-source browser project offering strong security, fast performance, and stability with broad support for Windows, macOS, Linux, and Android, extensive customization, frequent security updates, minimal default tracking, and foundation for multiple browsers.

    210 Chromium alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Since

    • Since 2010

    Platforms

    • Windows
    • Mac
    • Linux
    • BSD
    • Xfce
    • Android
    • TrueOS
    • Flathub
    • Snapcraft
    Good alternative?
     
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    12
  9. Mullvad Browser icon
     186 likes

    The Mullvad Browser is a privacy-focused web browser developed in a collaboration between Mullvad VPN and the Tor Project. It’s designed to minimize tracking and fingerprinting. You could say it’s a Tor Browser to use without the Tor Network.

    116 Mullvad Browser alternatives

    Cost / License

    Application type

    Since

    • Since 2023

    Platforms

    • Windows
    • Mac
    • Linux
    • Flathub
    • Flatpak
    Good alternative?
     
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    1
  10. Open-source web browser eliminates Google integration, disables background communications, strips non-free binaries, and includes privacy-focused patches and scripts for full transparency, control, and compatibility with Chromium extensions across major platforms.

    219 ungoogled-chromium alternatives

    Cost / License

    Application type

    Since

    • Since 2016

    Platforms

    • Windows
    • Mac
    • Linux
    • Flathub
    Good alternative?
     
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    5
  11. Cromite icon
     90 likes

    Cromite is a Chromium fork focusing on privacy, featuring built-in ad-blocking, user agent customization for privacy, DNS adjustments for security, and anti-fingerprinting measures to ensure user safety throughout browsing sessions.

    56 Cromite alternatives

    Cost / License

    Application type

    Since

    • Since 2023

    Platforms

    • Windows
    • Linux
    • Android
    • Android Tablet
    Good alternative?
     
  12. Pale Moon icon
     411 likes

    This open-source Goanna-based browser for Windows, Linux, Mac, and FreeBSD offers customization, security, and privacy. Forked from Firefox, it's optimized for modern processors, ad-free, and supports unique extensions, community-backed. Comes with a functional status bar, supports NPAPI plugins.

    207 Pale Moon alternatives

    Cost / License

    Application type

    Since

    • Since 2010

    Platforms

    • Windows
    • Mac
    • Linux
    • BSD
    Good alternative?
     
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    26
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