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mkext

An open-source browser extension starter for SaaS applications, built with WXT, React 19, and Better Auth.

  • Library/framework
  • Browser extension
  • Browser
  • Runs locally
Open websiteView on GitHub
mkext screenshot
Popularity
95 Stars
GitHub stars
Recent activity
8/12/2026
Maintenance status unclear
License
APACHE-2.0
Permissive

Why it matters

We look beyond stars: what problem it solves, whether it creates real utility, and what makes its approach worth noticing.

Last 90 days

Problem

Addresses the repetitive setup required for developers building browser extension companions for SaaS products, covering cross-browser packaging, authentication, and entrypoints.

Practical value

Provides a WXT and React 19 based boilerplate featuring Better Auth integration, multiple UI entrypoints, shared state management, and multi-browser build scripts.

Innovation / differentiation

Combines contemporary web and extension tooling with domain-specific integration examples like authentication and distinct content scripts for SaaS workflows.

Leverage potential

Built on Bun, TypeScript, Tailwind CSS, and WXT, enabling developers to quickly build and maintain structured browser extensions.

Why now

Aligns with the industry transition to Manifest V3 and the adoption of modern frontend and extension frameworks like React 19 and WXT.

Community activity

In the last 90 days there were 0 new issues and 0 pull requests; the bounded issue/PR samples include 0 issue authors and 0 PR contributors, with 0 releases.

Maintainer responsiveness

There were not enough new issues or pull requests in the last 90 days to judge maintainer responsiveness.

0 contributors in PR sample0 releases

Key highlights

  • Builds both Chrome Manifest V3 and Firefox extensions from a single React 19 codebase using WXT
  • Includes extension entrypoints for Popup, Side Panel, New Tab, DevTools, and Content Scripts
  • Integrates Better Auth with bearer-token storage and optional Chrome Google Identity sign-in

Quick start

How it is installed, how hard it is, and where to start.

Where it runs

Runs locally

Difficulty

Easy — follow the steps

Runs locally
  1. 01Clone the repository and enter the project directory
  2. 02Install dependencies using Bun: bun install --frozen-lockfile
  3. 03Copy the environment variables file: cp .env.example .env and set your auth backend URL
  4. 04Start Chrome development mode: bun run dev:chrome
  5. 05Build production ZIP packages: bun run build

Best for

  • Developers who want to try it on their machine

More about it

MkExt is a starter kit designed for SaaS products that require browser extensions. Built on top of the WXT framework, it allows developers to maintain a single React 19 and TypeScript codebase while outputting packages for both Chrome Manifest V3 and Firefox.

The project implements standard extension entrypoints out of the box, including Popup, Side Panel, New Tab, DevTools, and background service workers. It also demonstrates two page content injection styles: inline domain rating badges on search result pages and a floating interactive overlay on regular webpages.

On the data and auth layer, MkExt connects with Better Auth for token storage and Google Sign-In support. Combined with Bun, Biome, TanStack Query, and Tailwind CSS, it offers a complete environment for quick setup and deployment.

Sources

Each field shows its status and source — expand to review.

10 · Expand

  • capability tags

    Verified

    Source: admin_cms · cms editor · 8/15/2026

  • License

    Verified

    Apache-2.0

    Source: GitHub API · license.spdx_id=Apache-2.0 · 10/23/2026

  • needs api key

    Verified

    No

    Source: admin_cms · cms editor · 8/15/2026

  • One-liner

    Verified

    {"en":"An open-source browser extension starter for SaaS applications, built with WXT, React 19, and Better Auth.","zh":"基于 WXT 与 React 19 的开源 SaaS 浏览器扩展脚手架，支持 Chrome 和 Firefox 单代码库打包。"}

    Source: admin_cms · cms editor · 8/15/2026

  • Platforms

    Verified

    browser

    Source: admin_cms · cms editor · 8/15/2026

  • Category hint

    Inferred from materials

    ai-apps

    Source: Project README · hint=ai-apps · 8/15/2026

  • product forms

    Verified

    library_framework, browser_extension

    Source: admin_cms · cms editor · 8/15/2026

  • role tags

    Verified

    Source: admin_cms · cms editor · 8/15/2026

  • supports local

    Verified

    Yes

    Source: admin_cms · cms editor · 8/15/2026

  • supports self host

    Verified

    No

    Source: admin_cms · cms editor · 8/15/2026

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