🦊 I respect proton UI and aim to improve it.

A GNOME👣 theme for Firefox🔥

A tool to install, manage and use Progressive Web Apps (PWAs) in Mozilla Firefox

A very shy little theme that hides the entire browser interface in the window border

Custom CSS tweaks for Firefox

A Material Design-inspired userChrome.css theme for Firefox

A Userstyle theme for Firefox minimalist and Keyboard centered.

A userChrome.css theme to bring Arc Browser look on Windows to Firefox. Work with Windows, Linux and macOS ✨

Firefox CSS Theme - For dark theme lovers / More compact / Modular / Blur

An opinionated set of configurations for firefox.

A responsive One-Line CSS Theme for Firefox

userChromeJS / autoconfig.js and extensions

Firefox CSS Theme/Style for manual customization

The Firefox theme with too many options.. FF Ultima.

The ultimate theme manager for Firefox-based browsers.

A collection site of Firefox userchrome themes, mostly from FirefoxCSS Reddit community.

Bringing a refreshing macOS-inspired skin to Firefox

🦊 Firefox user CSS theme looks similar to Chrome

A Minimal, Cozy, Vertical Optimized Firefox Theme

Hide contextmenu items in Firefox Photon

Sun Valley + MDL2 Theme for Firefox

This theme for Firefox supports all the window buttons layouts from Tweaks and it blends into the elementary OS user interface.

FluentBird is a userChrome.css theme for Mozilla Thunderbird, that implemenets Windows 11 Fluent Design and Mica transparency materials.

Customizations for Firefox. You can add extra functions using the CSS and JS files here.

:fox_face: A firefox config that has rounded tabs and a url bar that can disappear when not selected on. It works with any theme.

A dark indigo CSS theme for Firefox and a large collection of privileged scripts to add new buttons, menus, behaviors and other opinionated features. The theme is similar to other userChrome stylesheets, but it's intended for use with an autoconfig loader like fx-autoconfig, since it uses JavaScript to implement its more functional features.

Custom firefox interface

A dark themed startpage and dark themes for Firefox and Linux inspired by Material design and Adapta.

charming firefox userchrome with sidebery support

A old Mozilla Firefox theme for Firefox 115-latest.