r3dfox is a fork of the open source web browser Mozilla Firefox made specifically for Windows Vista, 7, and 8 compatibility.
Limited compatibility with One Core API on Windows XP is offered at the current time, however this is not tested consistently. Any issues that may arise that are hard to diagnose may be left to the extended kernel provider to fix.
Local (GitHub) Downloads (New Repo):
Local (GitHub) Downloads (Old Repo):
SourceForge Downloads:
New default theme and color scheme!
More native and native like elements, scrollbar, checkboxes, radio buttons, tooltips, and more!
Aero Glass or accent color on 8/10+!
Ability to use modern (Windows 10) theme on any OS!
Full portable mode that doesn't touch AppData at all!
Switchable Classic about:config page!
Less telemetry than regular Firefox!
No background tasks!
Easier to notice red retry button for failed downloads!
JPEG XL support!
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!
Ability to disable more advanced things such as geolocation, Web Audio, e10s, and more!
Other options including the ability to disable tab groups, screenshot component, tab hover preview, drop to pin tabs, add tab to taskbar button, urlbar foratting, change the switch to tab behavior, and more!
If I've forgotten to put your name here, please let me know and I'll add it.
e3kskoy7wqk - Base Windows 7 support code for versions 136 and later and ESR 128.12.0 and later.
3y4m4r1n - Helped fix the new JumpListBuilder crashing under Vista and 7
Alex313031 - Mozconfig, general help with the browser, and changes from Mercury browser
Feodor2 - Portable mode and Vista compatibility changes from Mypal68
goodusername123 - Graphical acceleration in VMware Workstation
leadweedy - Improved active tab indicator from Firefox-Proton-Square
Librewolf Developers - Privacy tweaks from Librewolf
Mozilla Developers - Firefox browser base
QNetITQ - WaveFox theme
Solinus - Branding visuals, icons and fancy text
Tor Browser Developers - Addon fix code from Tor Browser
Firefox is a fast, reliable and private web browser from the non-profit Mozilla organization.
To learn how to contribute to Firefox read the Firefox Contributors' Quick Reference document.
We use bugzilla.mozilla.org as our issue tracker, please file bugs there.
- Firefox Source Docs is our primary documentation repository
- Nightly development builds can be downloaded from Firefox Nightly page
If you have a question about developing Firefox, and can't find the solution on Firefox Source Docs, you can try asking your question on Matrix at chat.mozilla.org in the Introduction channel.