Open-source MkExt browser extension starter for SaaS launches with auth and multi-browser support

sujingshen · x · 2026-08-12

Indie developer Fox open-sourced MkExt, a browser extension starter template based on the WXT framework, designed to help quickly build browser extensions that seamlessly integrate with SaaS websites.

Key features include: multi-language support, dark mode, various extension pages, Google login, email registration/login, shared account system with the website backend, and support for Chrome and Firefox. Tech stack: Bun + React + WXT + Better Auth + BaseUI.

MkExt's highlight is built-in authentication, enabling quick integration with websites using Better Auth (e.g., MkSaaS, TanStarter). For instance, it can power an extension for MkImage to analyze image prompts on any webpage, or for MkDollar to submit sites and track DR changes.

Commentator sujingshen notes that execution is no longer the bottleneck; the real challenge is business and commerce, urging programmers to avoid the illusion that coding alone brings orders.

Original post →

More from coding & agent

coding & agent channel →