Open Source Mozilla Firefox Alternatives

    The best open source alternative to Mozilla Firefox is Pale Moon, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Mozilla Firefox and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mozilla Firefox are Brave (Free, Open Source), Waterfox (Free, Open Source), Chromium (Free, Open Source) and Firefox Nightly (Free, Open Source).

    This page was last updated Jul 27, 2021

      • iPhone
      A full screen browser made for interactive prototypes. Typically a framer.js/p5.js/processing.js/lottie.js/SVG/Canvas/WebGL or any webkit technology based project. Not for general internet surfing use.
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      • FreeOpen Source
      • Linux
      • openSUSE
      • Arch Linux
      • Gentoo Linux
      • Slackware
      Vimb is a Vim-like web browser that is inspired by Pentadactyl and Vimprobable. The goal of Vimb is to build a completely keyboard-driven, efficient and pleasurable browsing-experience with low memory and CPU usage that is intuitive for Vim users.
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      Fork of the Iceape-UXP Internet Suite. I forked this to learn how a classic Mozilla application works and also because I feel that development on Iceape-UXP is too slow.
      No screenshots yet
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      Brave Nightly is our testing and development version of Brave. The releases are updated every night and may contain bugs that can result in data loss. Nightly automatically sends us crash reports when things go wrong.
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    1. Browse the Internet in private without leaving a trace of history on your computer. Ephemeral is a stripped down private browser that's perfect for avoiding persistent cookies or web trackers.
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    2. OhHai Browser is a browser built from the ground up to be different. Giving users a whole new way of viewing and interacting with tabs, with its virtical tab panel you can fit more tabs on one page.
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    3. Presearch is a privacy first decentralized search engine that rewards users in cryptocurrency for their search. Rewarding users is not a part of marketing, but its a way to provide value to users who provide value to search engine which many search engines failed to think of.
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      • FreeOpen Source
      • Android
      Lynket slides over the website from the app, enabling you to transition into the website seamlessly. Even if you navigate multiple times, you can always press X to quickly return to the app, where you left.
      No screenshots yet
      • FreeOpen Source
      • Linux
      Historically, Iceape was a re-branding of SeaMonkey by the Debian project. However, Debian discontinued Iceape in December 2013 citing security concerns and lack of a maintainer.
      No screenshots yet
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Go (Programming Language)
      This is the hotdog web browser project. It's a web browser with its own layout and rendering engine, parsers, and UI toolkit! It's made from scratch entirely in golang. External dependencies are only OpenGL and GLFW, even go dependencies are kept to a minimum.
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    Showing 90 of 91 alternatives