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Rule the web your way — feature-rich userscript manager to customize, automate, and dominate every site with ease. Supercharge your browser with GreasePanda — the modern userscript manager built for speed, simplicity, and seamless syncing. Install, manage, organize, and sync your favorite userscripts across devices with an intuitive interface designed for power users and beginners alike. • Easy userscript installation from popular script sources • Clean and modern script management dashboard • Cross-device syncing support • Fast performance with lightweight design • Built-in marketplace support • Import local userscript files instantly • One-click enable/disable controls • Developer-friendly script editor • Privacy-focused and easy to use Whether you use automation scripts, productivity tweaks, UI enhancements, ad-skipping tools, or custom website mods, GreasePanda gives you complete control in one sleek extension. 🔥 Perfect for: Userscripts • Browser Automation • Productivity • Script Management • Web Customization • Power Users • Developers Install GreasePanda today and take your browsing experience to the next level.
TamperJS — Inject Javascript Easily
Inject, tweak, and customize JavaScript on any website with a powerful Monaco-powered editor. TamperJS is a lightweight and efficient browser extension designed for developers who need a quick and seamless way to inject custom JavaScript into any website. Built with the Monaco Editor—the same technology behind VS Code—it provides a clean and intuitive environment for writing, testing, and executing scripts effortlessly. Whether you're a developer optimizing workflows, a researcher testing scripts, or a power user customizing web pages, TamperJS provides an easy-to-use interface with domain-based script management, instant execution, and a seamless dark mode for a comfortable coding experience. Our goal is to keep things simple yet effective, helping you customize the web in a way that suits your needs.
ScriptCat
Everything can be scripted, allowing your browser to do more! ScriptCat, a browser extension that can execute user scripts, everything can be scripted, allowing your browser to do more things! We built a framework for executing background scripts and Greasemonkey/Tampermonkey scripts based on the design ideas of Greasemonkey/Tampermonkey. It also has several unique APIs that enable scripts to do more. Furthermore, we provide a fantastic online editor that makes script code development more pleasant and easy. **Please Star it if you find it useful. ❤❤❤** - Cloud Sync: script recovery is easy when changing or reinstalling browser - Scripts subscription: creating your own script collections or enabling multiple scripts to work together. - Compatibility: allowing seamless migration from other userscript managers. - Background scripts: allowing your scripts to run continuously in the background. - Scheduled scripts: allowing for daily scheduled tasks. You can use them for automatic check-ins, timed reminders, and more. - Rich API: more powerful APIs than other managers, which can realize more functions. - Sandbox mechanism: ensuring user safety, script permissions are granted only with user consent. - Excellent editor: providing API auto-completion and ESLint. - Nice UI
ScriptRunner - v3 userScript manager
ScriptRunner allow you to create,manage and inject userScripts on any website you want 📢 Create,manage and inject userScript in any website you will 🔔 Top Features ✪ V3 userScript manager ✪ No Signup or permission required ✪ Modern UI design ✪ Lightweight and advanced code editor ✪ Free and Open source: https://github.com/anilkumarum/ScriptRunner ✪ Debug error in script in scriptRunner's console ✪ Swiftly activate and deactivate scripts with just two clicks ✪ Link local script file or folder ✪ Don't ask "read and change all your data on add all websites" Permission. ✪ Install script from userscript sites e.g greasyfork.org, www.userscript.zone, openuserjs.org, github & more ✪ No tracking, no Ads Change the web at will with userscripts Userscripts are small programs that modify page layouts, add or remove features, and automate actions to personalize your web experience. ✅ link local script file When you edit local file in any ide or text editor, scriptRunner auto-update script. ✅ 🔍 Discover Userscripts: Find a wide array of userscripts at Paste url link ends with ".user.js". You can mail us: coderrailhelp@gmail.com
Moonly - javascript and css injector
Inject javascript and css into pages dynamically. Moonly – lets you inject custom JavaScript and CSS into any web page. Create scripts, set conditions for when they run, and manage everything through a clean, built-in editor. What you can do: - Inject JavaScript or CSS — write either in a full-featured code editor (syntax highlighting, line numbers, bracket matching, and a choice of editor themes) - Run scripts manually with one click from the popup, or automatically when a page matches your conditions - Match pages by exact URL, substring, or regex pattern - Control injection timing — run JavaScript before the page loads or after (CSS is applied early, with no flash of unstyled content) - Organize your library — search, duplicate, reorder, and enable/disable scripts - Import and export scripts as JSON, one at a time or all at once, for backup or sharing Built for developers, testers, and power users who want to automate repetitive tasks, test page behavior, or customize their browsing experience. - Tabs — detect the active page for script matching - Scripting — inject your JavaScript and CSS into pages - Storage — save your scripts locally on your device Scripts are stored entirely on your device and never sent anywhere. No data is collected. Use responsibly — only run scripts you trust.
