payload

Payload is the open-source, fullstack Next.js framework, giving you instant backend superpowers. Get a full TypeScript backend and admin panel instantly. Use Payload as a headless CMS or for building powerful applications. Maintained by payloadcms on GitHub, where it has earned 44,590 stars from the community.

It's actively developed around headless-cms, cms, express, and is a solid reference for anyone building with these tools.