💡 Pick it for powerful JavaScript automation and the largest userscript ecosystem.
Tampermonkey is a popular userscript manager that allows users to customize the functionality of websites by installing scripts.
Best Sitemod Alternatives ranked by AI · updated Aug 2026
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Sitemod is a browser-based website customization tool for changing the appearance and behavior of existing websites. It is aimed at users who want to apply persistent visual or functional modifications without building a new site.
Top 6 Sitemod alternatives
💡 Pick it for free, open-source CSS customization and community-made website themes.
Stylus is a revolutionary new language, providing an efficient, dynamic, and expressive way to generate CSS.
💡 Pick it when you want an open-source userscript manager without a commercial license.
Violentmonkey is a popular userscript manager for browsers that allows users to customize the way web pages look and function by running...
💡 Pick it for request interception, API mocking, redirects, and professional web debugging.
Requestly is a powerful tool to modify network requests. It can be used for URL redirection, header modification, modifying response data, etc.
Free with paid plans available
💡 Pick it for a Firefox-focused, open-source userscript workflow.
Greasemonkey is a userscript manager for Firefox that allows you to customize the way webpages look and function.
💡 Pick it for simple, visual CSS edits without learning userscript programming.
Stylebot is a browser extension that allows you to customize the appearance of websites by modifying their CSS.
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