JSPM

Build Chrome Extensions with this Vite plugin.

Safely and securely store data and share them across your extension and websites

An in-memory implementation of webextension-polyfill for testing. Supports all test frameworks (Vitest, Jest, etc)

Isolate content script UI's styles from the parent page. Supports all browsers (Chrome, Firefox, Safari)

Utilities for working with match patterns.

Type-safe, zero-config messaging library for modern browser extensions

Light weight, type-safe wrapper around the web extension messaging APIs. Supports all browsers (Chrome, Firefox, Safari)


A type-safe wrapper around the web extension messaging APIs that lets you call a function from anywhere, but execute it in the background. Supports all browsers (Chrome, Firefox, Safari, etc)

Node and Browser env supported WebAssembly version of fastText: Library for efficient text classification and representation learning.

A type-safe, localStorage-esk wrapper around the web extension storage APIs. Supports all browsers (Chrome, Firefox, Safari, etc)

Create cross-browser extensions with no build configuration.

Universal router for React - works in web, React Native, and browser extensions with built-in view transitions

The develop step of Extension.js

The standalone extension creation engine for Extension.js

Build Chrome Extensions with this Rollup plugin.

Schedule and run jobs in your background script

Redux interface to chrome.storage (browser.storage). A unified way to use Redux in all modern browser extensions. The only way to get Redux working in Manifest V3 Chrome extensions

DOM Ghost is a command-line tool that enables AI models to interact with browser DOM elements through a Chrome extension. It serves as a bridge between AI tools and web applications, allowing AI agents to manipulate and inspect web page elements programma

Production-ready Chrome extension template with Manifest V3, TypeScript, React 19, Vite 7, comprehensive testing, and zero-config setup

Parse and resolve browser extension manifest fields to absolute paths.

Powerful Selector API with Dedicated Monitoring Supports

Browser Market Submission

Cross-browser extension toolkit - Unified API for Chrome & Firefox extension development with messaging, storage, webRequest, and tab management

Advanced performance monitoring with browser extension capabilities - Premium tier of KanmiPerf

A cli util to retrieve a Google OAuth 2.0 refresh token

Lightweight SDK to trigger Reclaim verification flows from **your website** or **your own extension UI (popup/panel)**. It wires content ↔ background, opens the provider tab, generates proofs via an **offscreen** document (WebAssembly), and emits comple

Lightweight npm package for seamless CORS management through the CORS Unlocker browser extension. Perfect for API testing and cross-origin development.

React Portal with dynamic mounting support

Multi-execution-context framework with reactive state and cross-context messaging for Chrome extensions, PWAs, and worker-based applications

Browser Market Submission

Unofficial utility to develop browser extensions for Twitter / X

Transports for the in browser transport protocols

Official TypeScript SDK for 0xio Wallet - Secure blockchain integration for dApps

Core library for building Chrome extensions with Chroma framework

Browser extension support for Jarvis Agent framework.

A comprehensive React UI component library designed exclusively for the AddonBone browser extension framework with customizable theming and consistent design patterns

React bindings for the Chroma Chrome extension framework

Manifest generation and build tooling for Chroma Chrome extensions

A library of Web-Extension Storage with inter context sync, collections, hooks, etc.

Centralized, persistent store for Chrome extensions using zustand, accessible from service workers and React, with chrome.storage.local persistence.

Messaging Library for Web Extensions

Cross-platform permission management service for web3 applications

React provider for NilData Wallet browser extension authentication

A type‑safe, embeddable JavaScript widget for Village integrations, including a built‑in events SDK.

Create a new Mellowtel browser extension with one command

Gotta Log 'Em All!

Chrome Extension API tools for Model Context Protocol (MCP) - provides MCP-compatible wrappers for browser extension APIs

A couple of hacks to keep the BGSW alive in a library

High-performance Zustand state management for WXT web extensions with seamless cross-tab synchronization and sub-10ms React re-renders

Browser extension payment SDK for GateVector - Accept payments in Chrome/Firefox extensions

A type-safe RPC for all webextension, client side code does not contain the actual called code, supports async generator functions

Runtime library for browser extension protocol buffers.

Complier plugin for `protoc` to generate TypeScript client/service definitions for protocol buffers.

♻️ Sync state across content script, background workers and the popup in Plasmo extensions

WranggleRpc transport for browser extensions

Universal testing framework for Chrome extensions - Fast static analysis without browser dependencies

Effortless State Synchronization for Web Extensions

A tiny middleware for redux to share actions through BroadcastChannel API

Moso Extension SDK for white-labeled browser extensions

Event bus for browser extensions

Zero-dependency library for analyzing browser extension capabilities from manifest files

TOTP library for React Native, websites, Chrome/Firefox extensions, and Node.js. Works 100% in Expo Go without native modules.

Chrome Extension framework with reactive state and cross-context messaging

Use chrome.storage APIs as underlying store for WranggleStorage feature layers

Adds memory support for chrome extensions via zustand

Yeoman generator

A npm package to generate a quickstart template for creating Chrome extensions.

Build Chrome Extensions with this Vite plugin.

TypeScript utilities to control password manager autofill behavior across different password managers

A library for communication between browser extension inject and content scripts

Add custom JavaScript or CSS to any webpage

A JavaScript library for interacting with local LLM capabilities via Bodhi Browser Extension

WebSocket bridge for connecting MCP clients to browser extensions

Professional development toolkit with Chrome extension for source detection, element analysis, and beautiful liquid glass UI

Use emojis in github Issues/PR

A bridge that connects Perplexity's web interface to the MCP (Model Context Protocol) ecosystem

Build Chrome Extensions with this Rollup plugin.

Build Chrome Extensions with this Vite plugin.

A simple tool to get you started on building a browser extension.

A TypeScript library for IPC communication in web applications and browser extensions

IPFS launcher browser extension with local pet names, version management, and smart CID discovery

A comprehensive toolkit for building type-safe browser extensions with robust messaging patterns

Block YouTube Shorts and keep your feed clean

Type-safe, chunked message passing for WebWorkers, ServiceWorkers, and browser extensions using GADTs with zero runtime dependencies

一个基于AI的智能表单填写工具，支持自动提取表单数据、AI重写优化、表单历史记录以及智能填充。同时支持npm包和浏览器插件使用。

Browsers extension distribution

Build Chrome Extensions with this Vite plugin.

A lightweight and fast MCP server to connect AI agents to your own Chrome browser.

Scaffold a multi-page browser extension powered by Vite + React from ReWar1311/react-multipage-extension-template.

A security package that prevents open redirect vulnerabilities by whitelisting allowed domains

A Create React App template for bootstrapping complex Chrome/Firefox/(any Chromium-based browser) extensions

Build Chrome Extensions with this Rollup plugin.

Visual debugging browser extension for React Responsive Easy

Build Chrome Extensions with this Vite plugin.

A TypeScript library for Chrome extension development

A Create React App/TypeScript template for bootstrapping complex Chrome/Firefox/(any Chromium-based browser) extensions

Build Chrome Extensions with this Vite plugin.

Build Chrome Extensions with this Vite plugin.

A modern scaffolding tool for creating browser extensions with ease

Build Chrome Extensions with this Vite plugin.

A TypeScript library for validating passkey/WebAuthn origin constraints in .well-known/webauthn endpoints.

A command-line tool for downloading browser extensions. Supports Chrome, Firefox, Edge, Opera, and Thunderbird extensions.

Converts a single YAML file to multiple messages.json locale files

PostCSS plugin for reseting all styles using !important, and making your own styles !important

Build Chrome Extensions with this Vite plugin.

Browser extension for ChatGPT-buddy - AI automation extension built on Web-Buddy framework

Build Wave Extensions with this Vite plugin.

Build Chrome Extensions with this Vite plugin.

CLI to scaffold a TypeScript browser extension project

Event-driven Node.js server framework for coordinating browser extension automation

Chrome transport provider with side panel support for Magic Button Cloud messaging library

Build Chrome Extensions with this Vite plugin.

## What is CRXJS?

Professional development toolkit with Chrome extension for source detection, element analysis, and beautiful liquid glass UI

Build Chrome Extensions with this Vite plugin.

A modern template for creating Chrome extensions using Vue 3, TypeScript, Vite, and UnoCSS

Puppeteer extra plugin to interact with browser extensions, highly experimental.

A framework for creating AI-powered browser extensions with support for any OpenAI-compatible provider

Build Chrome Extensions with this Vite plugin.

Una biblioteca para facilitar el desarrollo de extensiones de navegadores utilizando POO.

A simple browser extension wallet provider for React apps

Generate PNG icons from Iconify icon sets in multiple sizes

Generic web automation framework with event-driven architecture

DOM injection library

A lightweight utility library for interacting with Hive Keychain browser extension.

Browser DevTools extension for debugging FHEVM applications

🧩 ExtenKit CLI — Build modular browser extensions with zero config.