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

    1. Html Viewer 3 (hv3) is a powerful yet minimalist web browser that uses Tkhtml3 as a rendering engine and SEE (Simple ECMAScript Engine) to interpret scripts. The application itself is written in Tcl. Currently it is at alpha stage.

      Discontinued

      The program is no longer updated. Last version, 08_0203, released in February 2008, can be still downloaded from the official website.

    2. Inspire Leopard is a modern, fast, secure, intuitive and lighweight web browser for the 21st Century. Leopard brings you more privacy, safety and speed. Faster than you think

      Discontinued

      The website seems to be dead.

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      Inspire Leopard vs Mozilla Firefox opinions
      pros, cons and recent comments
      It's really fast and very intuitive. I tried many browser before and I was skeptical about this browser but when I try it, I decided to use Leopard. I love it!
      Positive comment almost 4 years ago

      0


    3. Sunrise is an open source web browser based on WebKit for Mac OS X. All in One Window

      Discontinued

      The project is no longer developed. Last version, 2.2.1, released in May 2012, can be still downloaded from MacUpdate

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    4. PreFox is an early proof-of-concept web browser for webOS based on the the same source code as Mozilla Firefox for Mobile. Why?

      Discontinued

      Development was discontinued. PreFox runs and can be used to browse the web but is not truly usable. The source code is available to get the project started again.

      PreFox vs Mozilla Firefox opinions
      pros, cons and recent comments
      Ola Well, it seems pretty bad.
      Negative comment 11 months ago

      0
    5. With every website you visit, you’re vulnerable to malicious hackers out to steal your surfing history, passwords, email access, bank account numbers, medical info, and more. And the “big browsers” don’t do enough to stop it.

      Discontinued

      WhiteHat Security will no longer be providing support or development resources for Aviator, but it made it an open source project.



    6. The Decentr browser is a privacy-focused, lightning fast, and completely secure web browser built on Decentr's custom blockchain with a free, fully-featured VPN and ad blocker.
    7. Zirco is an open-source alternative browser for Android. Features: • Basic browser features (bookmarks, history, downloads...

      Discontinued

      The project has been abandoned. Last version, 0.4.4, released in May 2012, can be still downloaded from Google Play Store.

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      • FreeOpen Source
      • Mac
      Shiira is a web browser based on Web Kit and written in Cocoa. The goal of the Shiira Project is to create a browser that is better and more useful than Safari.

      Discontinued

      Homepage is down. Wikipedia says the project is discontinued. See http://en.wikipedia.org/wiki/Shiira

      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • BSD
      A high-quality visual cross-platform gemini browser. Features: -Browser-like UI based on Qt5 -Light/dark theme -Fully customizable document styling -In-browser rendering of text, images and video.
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      • FreeOpen Source
      • Windows
      Ghostzilla was an open source web browser for Microsoft Windows based on Mozilla Application Suite 1.0.1. It ran the browser inside the window space of another application (e.g. in Microsoft Outlook), where the page was then made to look like the content in an email.

      Discontinued

      Discontinued ––?latest release ––?1.0.1-free-v1 / November 2002; 14 years ago

    Showing 80 of 91 alternatives