Modern MERN is a Node.js SaaS boilerplate that provides a starter codebase and tools to help developers quickly build and launch subscription-based software-as-a-service (SaaS) applications. A full-stack application built with the MERN stack (MongoDB, Express, React, Node.js) and other popular technologies like Next.js, Tailwind CSS, and Prisma. Common SaaS features like authentication, payments, multi-tenancy and an admin dashboard already implemented.