r3dfox

r3dfox 152.0.4-hotfix

A fork of the open source web browser Mozilla Firefox made specifically for Windows Vista, 7, and 8 compatibility.

  • By Eclipse Community
  • Open Source
  • Updated Jul 9, 2026
Download for Windows

About r3dfox

A fork of the open source web browser Mozilla Firefox made specifically for Windows Vista, 7, and 8 compatibility.

What's new in 152.0.4-hotfix

Not required but highly recommended.
After installing this release go to about:support, and click the Clear startup cache... button.

Please read
Hello, one of my friends, known as Tech Stuff or teknixstuff has had financial troubles recently, and needs donations so he can keep a roof over his head and have food to eat. If you have any spare money, please donate it to him, he would appreciate it. Click this paragraph to see the methods to donate.
Paypal - https://www.paypal.com/donate/?hosted_button_id=5S4JFGA9FM9UC
Arrives instantly, generally the best and most available option.
Buy me a coffee - https://buymeacoffee.com/teknixstuff
Takes days to arrive, uses stripe as their payment processor.
Remitly - https://www.remitly.com/
Arrives up to 2 hours, small fees.
GoCardless - https://teknixstuff.com/Network/GoCardless/
Shouldn't require a debit/credit card to use. limited country support.
Ads - https://teknixstuff.com
There are ads on the website, if you cannot afford to donate at this time, you can help out simply by just disabling your adblocker.

Release notes
Join the Eclipse Community Discord server!
https://discord.gg/ecx
The portable builds are fully portable, the profile directory is inside the browser folder. It does not touch appdata at all.
Requirements to use the browser on a given OS:
Vista: Service Pack 2 + KB971644 Platform Update
7 RTM/SP0 and later: Should just work.
Notable bugs:
The 32 bit build is built with --disable-sandbox. With the sandbox enabled under Vista, the browser fails to open multiple processes which breaks the browser. The 64 bit build is fine. Considering Mypal68 globally disables the sandbox, I don't think it's that bad. If this really is a big issue then please pr a fix.
Cairo/GDI backend ignores system cleartype settings and causes crashes on older versions of Windows and crashes without e10s.
New r3dfox specific changes in this build:
Missing native titlebar fix, #177. Thank you @IS4Code for the fix.
Removed missing calls from other javascript files that were resulting in useless warnings.
Previous 152.0.4 release notes:
Same as Plasmafox 153 due to me just being too busy to really add too much. Had some time to quickly make this and went for it. Maybe new 140 ESR soon idk.
Release notes from Plasmafox 153.0a1:
Fixed theme colors not being applied to some pages or buttons in the browser.
Menu accuracy improvements. …

Full release notes »

Technical details

PublisherEclipse Community
Version152.0.4-hotfix
Release date2026-07-09
LicenseUnclear, likely MPL-2.0
Installer typeexe
Architecturex86, x64
Package IDEclipseCommunity.r3dfox

Install r3dfox from the command line

Install with Windows Package Manager
winget install --id=EclipseCommunity.r3dfox -e
Update to the latest version
winget upgrade --id=EclipseCommunity.r3dfox -e
Uninstall
winget uninstall --id=EclipseCommunity.r3dfox -e
Silent install with the offline installer
"r3dfox-152.0.4.en-US.win64.installer.exe" /S /PreventRebootRequired=true

eclipse-communityfirefox-forkfirefoxforkgeckojpeg-xljpegxlr3dactedfoxweb-browserwebbrowser

r3dfox version history

148.0.2 Mar 16, 2026

Please read
Hello, one of my friends, known as Tech Stuff or teknixstuff has had financial troubles recently, and needs donations so he can keep a roof over his head and have food to eat. If you have any spare money, please donate it to him, he would appreciate it.
Ways to donate that are available at the moment:
Paypal - https://www.paypal.com/donate/?hosted_button_id=5S4JFGA9FM9UC
Arrives instantly, generally the best and most available option.
Buy me a coffee - https://buymeacoffee.com/teknixstuff
Takes days to arrive, uses stripe as their payment processor.
Remitly - https://www.remitly.com/
Arrives up to 2 hours, small fees.
GoCardless - https://teknixstuff.com/Network/GoCardless/
Shouldn't require a debit/credit card to use. limited country support.
Ads - https://teknixstuff.com
There are ads on the website, if you cannot afford to donate at this time, you can help out simply by just disabling your adblocker.
Release notes
Join the Eclipse Community Discord server!
https://discord.gg/ecx
The portable builds are fully portable, the profile directory is inside the browser folder. It does not touch appdata at all.
Requirements to use the browser on a given OS:
Vista: Service Pack 2 + KB971644 Platform Update
7 RTM/SP0 and later: Should just work.
Notable bugs:
The 32 bit build is built with --disable-sandbox. With the sandbox enabled under Vista, the browser fails to open multiple processes which breaks the browser. The 64 bit build is fine. …

146.0

Frequently asked questions

Is r3dfox free?

Yes. r3dfox is free and open-source software released under the Unclear, likely MPL-2.0 license.

What is the latest version of r3dfox?

The latest version is 152.0.4-hotfix, released on Jul 9, 2026.

Is it safe to download r3dfox?

The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 879f8deb0b613ef1b4a31050267dc0f0f4a24aa178c132092baf7d9ae425980c.

Which Windows versions does r3dfox support?

r3dfox runs on Windows and is available for 32-bit (x86), 64-bit (x64) systems.

How do I install r3dfox silently?

Run the offline installer with "r3dfox-152.0.4.en-US.win64.installer.exe" /S /PreventRebootRequired=true, or install it with Windows Package Manager: winget install --id=EclipseCommunity.r3dfox -e --silent.

How do I uninstall r3dfox?

Open Settings › Apps › Installed apps, find r3dfox and select Uninstall. From the command line, run winget uninstall --id=EclipseCommunity.r3dfox -e.