Stylus - User Styles Manager
Stylus is a userstyles editor and manager based on the source code of Stylish version 1.5.2.
17 Alternatives To Stylus - User Styles Manager
Cascadea
Remix the web. exclusively for macOS and Safari.
Dark Background and Light Text
Makes every page (or only pages that you want) to have light text on dark background.
Dark Night Mode
It is a universal night mode for the entire Internet.
Dark Reader
Reduce eye strain in your browser with this extension that provides a dark theme for browsing.
FreeStylerWs
Styles and skins for all popular sites in the web
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
Man in the Middle
Modify requests, inject JavaScript and CSS into pages.
Midnight Lizard
Accessible color schemes for all websites
Nuclino Dark Mode
Experience a darker side of collaboration í ½í¸
Owl
Owl is a light-weight Firefox add-on that gives webpages a dark background and dimmed colors.
Tampermonkey
Greasemonkey compatible script manager.
VK Photo Zoom
Enlarge photos, images and thumbnails in VK.
Violentmonkey
Violentmonkey is a userscript manager to support running userscripts in web pages.
superUserContent
Dynamically load stylesheets in Firefox from plaintext files in your profile.
xStyle
A user styles manager for the Web