User JavaScript and CSS
User JavaScript and CSS on any website.
Some of the top features or benefits of User JavaScript and CSS are: Customization, Control, Accessibility, and Learning. You can visit the info page to learn more.
Best User JavaScript and CSS Alternatives & Competitors in 2025
The best User JavaScript and CSS alternatives based on verified products, community votes, reviews and other factors.
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Open-Source Alternatives.
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/dark-reader-alternativesReduce eye strain in your browser with this extension that provides a dark theme for browsing.
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/tampermonkey-alternativesGreasemonkey compatible script manager.
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Try for freeMonitor all your cloud services with our status page aggregator. IT teams choose IsDown to monitor all their vendors and get alerts whenever an outage occurs. Integration with Datadog, PagerDuty, Slack, Microsoft Teams, and a lot more.
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/violentmonkey-alternativesViolentmonkey is a userscript manager to support running userscripts in web pages.
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/stylus-user-styles-manager-alternativesStylus is a userstyles editor and manager based on the source code of Stylish version 1.5.2.
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/greasemonkey-alternativesCustomize the way a web page displays or behaves, by using small bits of JavaScript.
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/stylebot-alternativesChange the appearance of websites instantly. Preview and install styles created by other users on stylebot.me
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/amino-editor-alternativesAmino is a Chrome browser extension for customizing web page presentation with user CSS.
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/stylus-alternativesEXPRESSIVE, DYNAMIC, ROBUST CSS
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/xstyle-alternativesA user styles manager for the Web
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/greasy-fork-alternatives
A site for user scripts.
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/midnight-lizard-alternativesAccessible color schemes for all websites
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/man-in-the-middle-alternativesModify requests, inject JavaScript and CSS into pages.
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/turn-off-the-lights-alternativesWith a single click on the lamp button, the page will fade to dark.
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