This is by no means exhaustive. Just in Feb 2022 while research the topic these were some top hits and some rabbit holes I went down in duckduckgo during my research.
- Next.js
- React
- React-Hooks
- Billing/Cart/ 3 tiers of choices
- Customer Portal
- Admin Pages
- Firebase integration,
- possibly Postgres + Prisma instead
- CMS
https://serverless.page/ - paid github repo boilerplate access
https://vercel.com/ - next.js hosting, templates
https://github.com/bradtraversy/next-crash-course - next.js tutorial
https://github.com/leerob/fastfeedback - https://react2025.com/ - tutorial series, stripe + firebase
https://duckduckgo.com/?q=next.js+saas+firebase
https://github.com/tomsoderlund/nextjs-generic-landing-page
https://github.com/tomsoderlund/nextjs-pwa-firebase-boilerplate
https://github.com/dunky11/react-saas-template
https://apps.shopify.com/recurring-membership
https://themeforest.net/item/skote-react-admin-dashboard-template/26318700
https://firebase.google.com/docs/analytics/measure-ecommerce#web-version-9
https://www.youtube.com/watch?v=Bqacj0iOL68
https://github.com/NomanGul/expertizo-rn-kit
https://themeforest.net/tags/reactjs#content metronic fuse wieldy facit
https://reactjsexample.com/12-best-react-ecommerce-templates/
https://www.freecodecamp.org/learn/front-end-development-libraries/