JSPM

Utilities for working with match patterns.

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

Build Chrome Extensions with this Vite plugin.

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

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

tRPC adapters and links for everywhere in the browser

Tool to convert the patterns and globs of your WebExtension manifest to regex


Cache values in your Web Extension and clear them on expiration. Also includes a memoize-like API to cache any function results automatically.

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

Detects where the current browser extension code is being run. Compatible with Firefox, Chrome and derivates.

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)

Build Chrome Extensions with this Rollup plugin.

Helps you manage and autosave your extension's options.

Schedule and run jobs in your background script

Wrapper around Mozilla’s web-ext to submit extensions to AMO.

Chrome/Safari extension polyfill for Firefox's browser.contentScripts.register()

Helps you manage and autosave your extension's options, separately for each additional permission.

tRPC adapter for Web Extensions

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

Redux for WebExtensions

Mozilla Add-ons API for NodeJS

Mozilla Webstore Upload

One-file interface to detect whether your content script have loaded.

Wrapper around Mozilla’s webextension-polyfill to make it available as a global even with a bundler

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

Svelte stores, backed up by chrome.storage

Require the `chrome` global (for WebExtensions)

A script to convert Pontoon-style l10n files to WebExtension-style l10n files.

tRPC adapters and links for everywhere in the browser (fork by firemuzy

Package for simplifying work with i18n in WebExtensions

webext-buildtools builder for packing and signing Chrome Web Extension for offline distribution

WebX Plugin for [Rsbuild](https://rsbuild.dev/)

Mozilla Webstore Upload

Visit the [GitHub](https://github.com/tmkx/webx-kit) readme for more details.

Sync data between a web extension's background, popup, options and content scripts. Works cross-browser, with MV3 and MV2.

Complete solution to build and deploy your Web Extension

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

A webpack plugin that publishes extension builds to the Chrome Web Store.

tRPC adapter for Web Extensions

WebX Plugin for [Modern.js](https://modernjs.dev/)

webext-buildtools builder for deploying to Firefox Addons store and signing xpi files

Chrome/Safari extension polyfill for Firefox's browser.contentScripts.register()

Build Chrome Extensions with this Rollup plugin.

Inject content scripts no more than once

Minimize browser extensions' `_locales/*/messages.json` files. Remove "description", "example", spaces, inline placeholders

Build Chrome Extensions with this Rollup plugin.

Svelte stores that synchronizes to WebExtension storage.

A redux wrapper for webextensions

webext-buildtools builder for deploying extension to Opera add-ons

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

webext-buildtools builder for deploying to Chrome Webstore. Based on chrome-webstore-upload

Svelte stores that synchronizes to WebExtension storage.

tRPC adapter for Web Extensions

Build Chrome Extensions with this Vite plugin.

tRPC adapter for Web Extensions

Build Chrome Extensions with this Vite plugin.

Build Chrome Extensions with this Vite plugin.

A webpack plugin that publishes extension builds to the Chrome Web Store.

Create browser extensions for Chrome, Firefox and other WebExtension compliant browsers with React and no build configuration.

Store Extension Settings Easily

Build Chrome Extensions with this Vite plugin.

A plugin to update manifest file(s) version on release

Grunt plugin for build chrome, firefox, opera and safari extensions

Build Chrome Extensions with this Vite plugin.

Better WebExtension sendMessage API

Build Wave Extensions with this Vite plugin.

Build Chrome Extensions with this Vite plugin.

TTL cache for web extensions. Powered by @isaacs/ttlcache

Build Chrome Extensions with this Vite plugin.

Svelte stores that synchronizes to WebExtension storage.

Cross-browser helper utility functions for MV3 & MV2 web extensions.

Build Chrome Extensions with this Vite plugin.

Better WebExtension storage API

Build Chrome Extensions with this Vite plugin.

Build Chrome Extensions with this Vite plugin.

Build Chrome Extensions with this Vite plugin.

Rollup plugin that makes it easy to develop Chrome / Firefox extensions

Build Chrome Extensions with this Vite plugin.

## What is CRXJS?

zustand middlewares for webext develop