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User JavaScript and CSS

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Top 8 Open-Source Alternatives to User JavaScript and CSS

Dark Reader Stylus - User Styles Manager Violentmonkey Greasemonkey Stylebot Midnight Lizard Stylus User-Agent Switcher and Manager

Product categories

Browser Extension Browsing Experience Communication Dark Mode Design Tools Developer Tools Monitoring Tools Security & Privacy Tool

Summary

The top open-source alternatives to User JavaScript and CSS are Dark Reader, Stylus - User Styles Manager, and Violentmonkey. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. Dark Reader Landing Page
    Dark Reader Landing Page
    1

    Dark Reader

    Reduce eye strain in your browser with this extension that provides a dark theme for browsing.
    Pricing:
    • Open Source

    #Browser Extension #Dark Mode #Developer Tools 185 social mentions

  2. Stylus - User Styles Manager Landing Page
    Stylus - User Styles Manager Landing Page
    2

    Stylus - User Styles Manager

    Stylus is a userstyles editor and manager based on the source code of Stylish version 1.5.2.
    Pricing:
    • Open Source

    #Browser Extension #Developer Tools #Dark Mode 47 social mentions

  3. Violentmonkey Landing Page
    Violentmonkey Landing Page
    3

    Violentmonkey

    Violentmonkey is a userscript manager to support running userscripts in web pages.
    Pricing:
    • Open Source

    #Browser Extension #Developer Tools #Dark Mode 45 social mentions

  4. Greasemonkey Landing Page
    Greasemonkey Landing Page
    4

    Greasemonkey

    Customize the way a web page displays or behaves, by using small bits of JavaScript.
    Pricing:
    • Open Source

    #Browser Extension #Dark Mode #Tool 1 social mentions

  5. Stylebot Landing Page
    Stylebot Landing Page
    5

    Stylebot

    Change the appearance of websites instantly. Preview and install styles created by other users on stylebot.me
    Pricing:
    • Open Source

    #Browser Extension #Developer Tools #Dark Mode 14 social mentions

  6. midnight-lizard.org
    6

    Midnight Lizard

    Accessible color schemes for all websites
    Pricing:
    • Open Source

    #Browser Extension #Dark Mode #Browsing Experience

  7. Stylus Landing Page
    Stylus Landing Page
    7

    Stylus

    EXPRESSIVE, DYNAMIC, ROBUST CSS
    Pricing:
    • Open Source

    #Developer Tools #Browser Extension #Dark Mode 11 social mentions

  8. User-Agent Switcher and Manager Landing Page
    User-Agent Switcher and Manager Landing Page
    8

    User-Agent Switcher and Manager

    spoofs browser's User-Agent string.
    Pricing:
    • Open Source

    #Monitoring Tools #Browser Extension #Dark Mode 3 social mentions

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If you think we've missed something, please suggest an alternative to User JavaScript and CSS.
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