User JavaScript and CSS AlternativesUser Styles Managers and other similar apps like User JavaScript and CSS

User JavaScript and CSS is described as 'Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page' and is a user styles manager in the development category. There are more than 10 alternatives to User JavaScript and CSS for a variety of platforms, including Mac, Google Chrome, iPhone, iPad and Mozilla Firefox apps. The best User JavaScript and CSS alternative is Stylus, which is both free and Open Source. Other great apps like User JavaScript and CSS are Noir, Stylebot, Darko and xStyle.

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Alternatives list

  1. Stylus icon

    Stylus

     100 likes
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    Redesign the web with Stylus, a user styles manager.

    12 Stylus alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Microsoft Edge
    • Google Chrome
    • Opera
    • Brave
    • Chromium
    • Mozilla Firefox
    Stylus screenshot 1
     

    • Stylus is the most popular Open Source & free alternative to User JavaScript and CSS.

    • Stylus is Free and Open SourceUser JavaScript and CSS is Free and Proprietary
    • Stylus is Customizable and Privacy focusedUser JavaScript and CSS is not according to our users
  2. Noir icon

    Noir

     5 likes
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    Noir is a Safari extension for iOS that automatically adds a dark mode to every website you visit.

    21 Noir alternatives

    Cost / License

    • Pay once
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    Noir screenshot 1
    Noir screenshot 2
    Noir screenshot 3
     

    • Noir is the most popular Mac, iPhone & iPad alternative to User JavaScript and CSS.

    • Noir is the most popular commercial alternative to User JavaScript and CSS.

    • Noir is Paid and ProprietaryUser JavaScript and CSS is Free and Proprietary
    • Noir is LightweightUser JavaScript and CSS is not according to our users
  4. Stylebot icon

    Stylebot

     15 likes
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    Change the appearance of websites instantly by applying a easy to use interface for changing the CSS. Preview and install styles created by users for your favorite websites.

    12 Stylebot alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Google Chrome
    • Microsoft Edge
    • Mozilla Firefox
    Select and edit the selected element live
     

    • Stylebot is the most popular Web-based alternative to User JavaScript and CSS.

    • Stylebot is Free and Open SourceUser JavaScript and CSS is Free and Proprietary
  6. xStyle icon

    xStyle

     3 likes
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    A Chinese Developed Theme Manager. based on the source code of Stylish-for-Chrome 1.7.0.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Chrome OS
    • Google Chrome
    • Mozilla Firefox
    TaskBar pop-down
     
  7. Amino: Live CSS Editor icon

    Amino: Live CSS Editor

     3 likes
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    Make visual changes to any website with CSS and see changes in real time. Sync, edit, and export your custom style sheets.

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Platforms

    • Online
    • Google Chrome
    Amino: Live CSS Editor screenshot 1
     
  9. superUserContent icon

    superUserContent

     2 likes
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    Dynamically load stylesheets in Firefox from plaintext files in your profile.

    superUserContent is a simple Firefox plugin that creates a new directory in your profile's chrome directory called userContent.css.d. You can use this directory as a runtime path for css styleshee.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Mozilla Firefox
    superUserContent screenshot 1
     

    • superUserContent is the most popular Windows & Linux alternative to User JavaScript and CSS.

    • superUserContent is Free and Open SourceUser JavaScript and CSS is Free and Proprietary
  10. Man in the Middle icon

    Man in the Middle

     4 likes
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    Modify requests, inject JavaScript and CSS into pages.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • UC Browser
    • CentBrowser
    • Google Chrome
    • Yandex.Browser
    • Opera
    • Chromium
    • Firefox
    Use Blocking Rules to block or redirect requests.
     
  11. Makeover - Custom CSS icon

    Makeover - Custom CSS

     2 likes
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    Makeover lets you change the appearance and behavior of web pages with CSS and JavaScript. To use it, you go to a web page you want to customize, tap the Makeover icon, and paste the code into the text field.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • iPhone
    • iPad
    Makeover - Custom CSS screenshot 1
     
  12. Dark Mode Enabler icon

    Dark Mode Enabler

     1 like
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    Enables dark mode and filters on all websites that do not support it natively.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Google Chrome
    Dark Mode Enabler screenshot 1
     
  13. Dark theme icon

    Dark theme

     1 like
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    This app helps to activate night theme on devices that don't provide this option in the system settings.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    Dark theme screenshot 1
    Dark theme screenshot 2
    Dark theme screenshot 3
     

    • Dark theme is the most popular Android & Android Tablet alternative to User JavaScript and CSS.

    • Dark theme is Free and Open SourceUser JavaScript and CSS is Free and Proprietary
  14. Dark Night icon

    Dark Night

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    This Safari extension offers dark mode browsing in Safari. Dark Night adds a beautiful theme to every page you visit.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    • Safari
    Dark Night screenshot 1
     
12 of 15 User JavaScript and CSS alternatives