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r3dfox or r3dactedfox is a fork of release branch Mozilla Firefox made for Windows Vista, 7, and 8. r3dfox also comes with limited compatibility for Windows XP using One Core API. Included are multiple tweaks from Librewolf, other browsers, and our own tweaks. Our browser even has a custom theme. You can disable any of this at will for a more stock experience if you want to.

Features

  • New default theme and color scheme!
  • More native and native like elements, scrollbar, checkboxes, radio buttons, tooltips, and more!
  • Windows theme version override, ability to use modern (Windows 10) theme on any OS, or enable (Windows 7) Aero theme on Windows 10!
  • Full portable mode that doesn't touch AppData at all!
  • Switchable Classic about:config page!
  • Less telemetry than regular Firefox! No installer ping and no background tasks!
  • Easier to notice red retry button for failed downloads!
  • JPEG XL support! Including transparency and animation!
  • GPU/hardware acceleration in VMware Workstation 16 and above!
  • general.useragent.override.(website) is back!
  • Instant one off searches and classic one off search UI!
  • Ability to restore classic right click menu items such as view image and text navigation buttons!
  • Ability to disable CSP, CORS, HSTS, and SOP!
  • Experimental (and kinda broken) ability to disable e10s (multiprocess), Skia, and DirectWrite!
  • Other options including the ability to easily disable geolocation, Web Audio, tab groups, screenshot component, tab hover preview, drop to pin tabs, add tab to taskbar button, urlbar foratting, switch to tab behavior, and more!

Project Samples

r3dfox home page showing about and winver on Windows 7. r3dfox settings page showing options and Aero glass on Windows 10 with Windows version theme override set to Windows 7. r3dfox settings page and private browsing window with theme styles turned off but colors on. r3dfox settings page and private browsing window with theme styles turned on but colors off. r3dfox with the Eclipse Purple color scheme showing Eclipse Community board. r3dfox with the Eclipse Purple color scheme showing classic about:config page and site specific useragent overrides.

Project Activity

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Categories

Browsers, Internet

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r3dfox - Modern Firefox for Windows 7 Web Site

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User Reviews

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  • jeanfsantos Posted 2026-05-18
    The only thing that makes browsing possible on my Windows 7 is this browser. With a Phenom II x2, even Supermium is sluggish.
  • r84mk Edited 2025-09-06
    R3DFox is what Firefox used to be. Fast and minimalist. It's a shame that Mozilla is following in Chromium's footsteps. For Me 10/10
  • blackdoomer Posted 2025-08-21
    great
  • aeric20044 Posted 2024-06-25
    GOOD
  • luk3z Posted 2024-03-29
    Cool. It even works on XP with OCAPI + NNN4NT5 :)
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Additional Project Details

Operating Systems

Windows, Windows Server

Intended Audience

End Users/Desktop

Registered

2024-03-22
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