Open-source alternatives to Chrome Extensions Samples

This project is a boilerplate for Chrome extension development, utilizing React and Vite to build custom functionality and user interfaces for web browsers. The development workflow emphasizes fast iteration through hot-reload capabilities and module rebuilding, which reflect code changes in the browser without manual reloading. It includes a type-safe internationalization system for managing multi-language support and automated end-to-end testing to verify feature stability across different browser packages. The architecture provides a component-based framework for creating popups, options

WXT is a development framework and build tool for creating browser extensions. It transforms source code into browser-compatible formats and provides a structured environment for managing the compilation and asset management of web extensions. The framework automates the definition of background and content scripts by mapping the file-system structure directly to extension manifests. It includes a development environment with hot module replacement to apply real-time code updates in the browser without manual restarts. The toolset covers the full extension lifecycle, including project bootst

《Chrome插件开发全攻略》配套完整Demo，欢迎clone体验

Supermium is a Chromium-based web browser backported to run on legacy versions of Windows. It uses an abstraction layer to adapt modern engine requirements, enabling contemporary web browsing on older operating systems that lack native support for current Chromium versions. The project integrates content decryption modules to allow the playback of DRM-protected media streams on unsupported platforms. It also features the ability to disable machine-specific encryption, allowing user profiles to be portable across different hardware installations. The browser includes a functional sandbox to i

Firefox is a cross-platform web browser engine designed to render web content, execute JavaScript, and manage secure browsing sessions. It utilizes a multi-process isolation architecture that distributes browser tasks across independent operating system processes to ensure stability and prevent site-specific failures from impacting the entire application. The engine incorporates a sandboxed execution environment to restrict web content and untrusted scripts to isolated memory compartments, enforcing security policies that prevent unauthorized access to system resources. The project distinguis

WebLLM is a library for executing large language models directly within web browsers. It provides a framework for building conversational artificial intelligence applications that perform inference locally, ensuring user data privacy by eliminating the need for external server dependencies. The project distinguishes itself by leveraging browser-native graphics APIs to perform intensive machine learning computations on the client side. It maintains application responsiveness by offloading heavy model tasks to background threads and ensures continuous operation through service workers that func

Betterfox is a curated configuration profile for the Firefox web browser designed to optimize speed, security, privacy, and user interface minimalism. It provides a set of preferences and settings to harden the browser environment and improve overall performance. The project distinguishes itself through targeted configuration suites that refine scrolling behavior, font rendering, and interface elements while removing visual distractions from the new tab page and address bar. It includes specific directives to disable telemetry, tracking, and digital rights management. Its broader capabilitie

This project is an AI-powered English education tool and browser extension designed for immersive language learning. It functions as a proficiency training suite that integrates AI tools and linguistic analysis directly into external websites and streaming video platforms. The system employs a DOM injection model to add interactive overlays and toolbars to web pages. It uses large language model APIs to provide real-time translations and maps curated pronunciation and grammar exercises to specific timestamps in external media. The tool covers a broad range of English proficiency training, in

GitHub-Dark is a browser extension theme and collection of user style sheets designed to provide a comprehensive dark mode aesthetic for the GitHub interface. It functions by injecting custom style rules directly into the browser to override default website colors, fonts, and layout properties, aiming to improve visual comfort and readability during extended use. The project distinguishes itself through its focus on deep integration and visual consistency. It includes specialized support for syntax highlighting across various programming languages and notebook environments, ensuring that code

This project is a browser extension and metadata tool designed to restore the visibility of dislike counts on YouTube videos. It functions as a client-side video enhancer that modifies the web interface to display engagement statistics that are otherwise hidden. The tool restores these metrics by combining archived data and user votes with statistical extrapolations. This data is retrieved via a public API using unique video identifiers to help users evaluate video content and identify low-quality or misleading videos. The extension utilizes content scripts and client-side patching to inject

This project is a cross-platform chatbot framework designed to integrate generative artificial intelligence models into messaging services. It provides a unified architecture for building and deploying automated bots that maintain consistent conversation state, user identity, and interaction logic across multiple messaging platforms from a single codebase. The framework distinguishes itself through a modular adapter system that normalizes platform-specific webhooks and events into a standardized internal schema. It includes a comprehensive toolkit for constructing rich, interactive user inter

Filament is a full-stack framework for building administrative panels and management interfaces within the Laravel ecosystem. It provides a declarative, component-based architecture that allows developers to construct complex, data-driven applications using server-side configuration objects rather than manual HTML. By inspecting database model structures and relationships, the framework automates the generation of CRUD interfaces, forms, and data tables, significantly reducing boilerplate code. The project distinguishes itself through a highly modular and extensible design that supports custo

lf is a terminal-based file manager and TUI file explorer that provides keyboard-driven navigation for browsing and organizing files and directories. It operates as a shell-integrated tool that synchronizes the current working directory with the calling shell and supports vi-style keybindings for filesystem operations. The project distinguishes itself through its ability to render images directly in the terminal via the SIXEL graphics protocol and its shell-driven execution model, which allows users to extend functionality using external shell scripts and commands. It also implements a server

Playwright is a comprehensive browser automation framework designed for end-to-end testing and web workflow automation. It provides a unified API to drive web applications across multiple browser engines, enabling developers to simulate complex user interactions, perform web scraping, and validate application behavior in consistent, isolated environments. The framework distinguishes itself through a web-first testing paradigm that prioritizes stability and resilience. By utilizing an auto-waiting actionability engine and accessibility-tree-based locators, it eliminates common sources of test

Zellij is a terminal multiplexer and workspace manager designed to organize command-line sessions into persistent, reconfigurable layouts. It functions as a terminal plugin framework, allowing users to extend their environment with modular, event-driven components that interact with the host through a structured message-passing protocol. The project distinguishes itself through a layout-engine-based architecture that decouples visual pane arrangements from process execution, enabling automated and repeatable terminal workflows. It includes integrated support for web-based remote access, facil

Cat-catch is a browser-based media utility designed to detect, capture, and manage web-based video and audio resources. It functions as a comprehensive sniffing and download management system, enabling users to identify hidden or protected media assets directly from active web pages. The tool specializes in reconstructing fragmented streaming protocols, such as DASH and M3U8, into complete files while providing options for real-time stream recording and playback control. The project distinguishes itself through its deep integration with local system environments and external automation tools.

ChatGPT-Shortcut is a prompt engineering toolkit and management library designed to organize, refine, and deploy structured instructions for large language models. It functions as a browser-based prompt injector and a self-hosted prompt database, allowing users to maintain a curated collection of specialized templates. The project features a community prompt gallery where users can publish, discover, and vote on effective templates. It distinguishes itself by integrating these libraries directly into chat interfaces via userscripts or browser extensions, enabling access to prompts through sid

The Great Suspender is a Chrome browser extension and memory optimization tool designed to manage browser tab states and reduce system resource consumption. It functions as a browser tab manager that frees up system RAM by freezing dormant browser pages. The tool improves browser performance and stability by suspending inactive tabs to limit the number of active processes running in the background. It reduces overall memory and CPU usage by freezing tabs until a user interacts with them again. The extension handles browser memory management and performance optimization through the monitoring

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

Tamperchrome is a browser-based API debugger and network interceptor designed for the real-time manipulation of HTTP traffic. It functions as a proxy alternative that allows for the capturing and modification of requests and responses directly within the browser environment. The tool enables API response mocking and the alteration of server data before it reaches the page. It provides capabilities for modifying outgoing request headers and bodies, as well as injecting content into response bodies to test client-side behavior. The project covers a broad surface of network debugging, including

extension.js is a browser extension development framework and build tool designed to facilitate the creation, testing, and packaging of web extensions. It provides a system for building a single codebase that maintains compatibility across different browser environments. The framework utilizes adapters to map code to various browser specifications and includes a hot-reloading tool that updates background and UI scripts in real-time. It also manages isolated browser binaries to keep development environments separate from system installations. The toolset covers the full development lifecycle,

This is a Chrome browser extension that serves as an HTML5 video speed controller and media playback speed manager. It is designed to adjust the playback rate of video and audio elements across any website and provide a utility for navigating media timelines. The tool features a dedicated interface for mapping custom keyboard shortcuts to control playback and timeline navigation. It allows for the creation of domain-specific playback rules to set default speeds or disable the controller on specific websites, and it includes a mechanism to persist selected speeds when native players attempt to

Plasmo is a browser extension framework and build tool designed for developing cross-browser extensions from a single codebase. It functions as a development environment that automates manifest generation and bundles source code into compatible packages for multiple web browser engines. The project includes a developer toolset featuring hot module replacement for real-time code updates and an automated publisher to deliver completed builds to various browser web stores. Its capability surface covers extension UI development through the injection of components into web pages and a communicati

This project is a browser extension that functions as a visual accessibility aid and dark mode generator. It dynamically analyzes web page content to create and apply dark color schemes, aiming to reduce eye strain and improve readability for users. The extension operates by injecting custom style sheets and filters directly into the browser document object model. It distinguishes itself through a combination of automated theme generation and granular control, allowing users to adjust brightness, contrast, and sepia levels. It also supports site-specific overrides and exclusions, enabling use

Automa is a browser-based automation platform that enables users to build, schedule, and execute repetitive web tasks through a visual, no-code interface. By operating as a browser extension, it provides a canvas-based environment where users construct workflows by connecting functional blocks to interact with web elements, manage browser state, and process data. The platform distinguishes itself through its deep integration with the browser environment, allowing for complex orchestration such as event-driven triggers, cross-origin request handling, and the ability to package workflows as sta

This project is a Chromium-based web browser and multi-process browser shell. It utilizes a sandboxed architecture to isolate the rendering engine from the browser shell and manages web page rendering through GPU acceleration. The system includes a browser extension host and framework designed to execute third-party add-ons by managing their bindings, events, and feature sets. It also incorporates a web platform performance suite that uses synthetic microbenchmarks to measure the latency and throughput of low-level system primitives. The browser maintains security boundaries via filtered int