Nocturne is a fork of r3dfox that restores removed Firefox CSS customization options, keeps Windows 7 and 8 support alive, and targets customized Windows 10/11 builds.

Nocturne on Windows 10

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Nocturne on Windows 7 (With Geckium installed)

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Nocturne on Windows 10 skinned as Windows 8 (With Echelon 140 installed)

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Nocturne on Windows 10 skinned as Windows XP (With Namoroka installed)

Features

Nocturne keeps the browser feeling familiar while adding Windows-focused polish and compatibility:

• More native-like controls, scrollbars, checkboxes, radio buttons, and tooltips
• Aero Glass support on Windows 8/10+
• Full portable mode that doesn't touch AppData
• Switchable classic about:config page via nocturne.ui.oldaboutconfig
• Less telemetry than regular Firefox
• No background tasks
• Firefox 68-style retry button for failed downloads via nocturne.ui.ff68downloadicons
• JPEG XL support
• GPU/hardware acceleration in VMware Workstation 16 and above
• general.useragent.override.(website) is back
• Instant one-off searches
• Ability to disable CSP
• Ability to visit websites on ports that Firefox rejects
• Ability to revert icons to the legacy behavior via nocturne.legacyiconbehavior.enabled
• Ability to bring back the 16x16 icon via nocturne.smalliconbehavior.enabled
• Reimplemented -moz-win-glass for a glass look with borders
• Reimplemented the old URL search bar for pre-133 themes

and more!

Credits

If I've forgotten to put your name here, please let me know and I'll add it.

• Travis, NetworkNeighborhood - The current logo used in the browser. Recolored from the original.
• Nareny - Modified the icon for Incognito, made the .pdf icon and helped with the new icon redesign.
• Aubymori & Isabella Lulamoon - Classic about:config, disabled launcher process, and more from Nara browser
• Erizur - Improved native titlebar, modern mode, and some miscellaneous fixes from Marble Browser
• Isabella Lulamoon - Native Controls Patch
• Feodor2 - Portable mode and Vista compatibility changes from Mypal68
• goodusername123 - Graphical acceleration in VMware Workstation
• i486 - Fixed non-native menus
• leadweedy - Improved active tab indicator from Firefox-Proton-Square
• bbc-chi - Fullscreen transition fix
• Alex313031 - Mozconfig, general help with the browser, and changes from Mercury browser
• newbie-461 - Fixed the installer issues
• SashaXser - Improved rustflags opts in mozconfig
• Librewolf Developers - Privacy tweaks from Librewolf
• Mozilla Developers - Firefox browser base
• Tor Browser Developers - Addon fix code from Tor Browser
• wanderer - Various code contributions for Vista support / extra help in Nocturne

Original repository readme

Firefox is a fast, reliable and private web browser from the non-profit Mozilla organization.

Contributing

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.

Resources

• 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.