Userscript manager

Userscripts is a Safari browser extension that installs and runs custom JavaScript and CSS on websites through Apple's content script injection system. It provides a privileged execution context that allows userscripts to perform cross-origin HTTP requests and access clipboard functionality beyond standard browser sandbox restrictions. The extension uses metadata tags like @match, @run-at, and @weight to control precisely when and where scripts execute on web pages. It includes a built-in code editor with syntax highlighting and linting for modifying scripts directly, and supports automatic s

Tampermonkey is a userscript manager used for browser behavior modification and web page automation. It allows for the installation and management of custom scripts that inject JavaScript into web pages to change their appearance or functionality. The project enables cross-browser script synchronization to maintain a consistent set of modifications across multiple devices. It provides a mechanism to manage custom userscript collections and synchronize them via cloud accounts. The system covers a broad range of capabilities including the automation of repetitive tasks on specific websites and

Scriptcat is a user script manager and browser extension designed to install, execute, and manage custom JavaScript scripts to modify website behavior and extend browser functionality. It features a JavaScript sandbox environment that provides specialized APIs for storage, cookies, and system notifications, alongside a cloud-synced script repository to keep subscriptions and configurations consistent across multiple devices. The project includes an in-browser script editor for writing, testing, and debugging code directly within the browser. It also incorporates a cross-domain request engine

Violentmonkey is a userscript manager extension and JavaScript injection framework. It allows users to install and manage custom scripts and CSS to modify the behavior and appearance of websites based on metadata-driven trigger conditions. The project functions as a cloud-synced script manager, backing up and synchronizing scripts across different devices using external cloud storage services. It also serves as a cross-origin request bridge, providing a communication layer that enables scripts to bypass the same-origin policy to fetch data. The tool covers a broad range of browser automation

Greasemonkey is a Firefox extension that functions as a JavaScript userscript engine and manager, executing custom scripts on target web pages to automate tasks and alter page functionality. It injects user code into the isolated execution context of web pages before or during page load, allowing users to modify content, behavior, and styling dynamically on specific websites. The extension integrates natively into the browser extension system using background processes and messaging interfaces. It parses special comment blocks inside scripts to determine execution permissions, URL matching pa

Stay is a local userscript manager and an extension sample for Safari on iOS/iPadOS.

Bilibili-Evolved is a browser-based environment that functions as a web content modification engine. It operates as a user interface customization suite, allowing users to personalize their browsing experience by injecting custom logic and interface modifications directly into the Bilibili platform. The project distinguishes itself through a modular component architecture that organizes independent features into isolated units, which can be toggled or configured individually. It utilizes a user-script injection mechanism and a document mutation observer pattern to dynamically alter site asset

Runestone is a web-based code editor component and rendering engine designed for browser-based text editing. It functions as a customizable interface that handles the visual representation of code, including line numbering, indentation, and line wrapping. The project features a rule-based syntax highlighting engine that applies colors to text ranges based on language grammar definitions. It also includes a regex-based text search engine that locates specific patterns and applies visual highlights to matching character offsets. The editor manages text input through automatic character pairing

Monaco Editor is a web-based text editing component designed to provide advanced syntax highlighting, code completion, and language intelligence within browser environments. It functions as a reusable interface element that enables developers to integrate professional-grade coding experiences into web applications. The editor distinguishes itself through a native client for the Language Server Protocol, which connects the interface to external analysis tools for deep diagnostics and refactoring capabilities. It utilizes a memory-efficient, declarative text buffer to manage large documents and

monaco-react is a React component wrapper for the Monaco Editor, providing a declarative way to embed a browser-based text editor into web applications. It includes components for standard code editing with syntax highlighting and a specialized diff editor for side-by-side version comparison. The project enables the integration of syntax validation to flag errors and provides mechanisms for managing multiple files through unique model identifiers, which preserve undo history and selection states during switches. It allows for custom asset loading via CDN or local paths and provides access to

CSDNGreener is a set of custom tools and rules designed as a browser extension or Tampermonkey user script to filter promotional content and clean web layouts. It functions as a content filter specifically for the CSDN platform, removing advertisements and floating windows to improve page readability. The project focuses on interface optimization for CSDN, modifying the layout and user interface to improve browsing speed and usability. It achieves this by removing promotional pop-ups and distracting visual elements to create a cleaner reading environment. These capabilities are implemented t