Introduction to Eternals

Eternals is a modular ecosystem of self-hosted developer tools designed to give developers complete control over their infrastructure.

What is Eternals?

Eternals provides a suite of independently deployable services that work seamlessly together:

• Eternals Mailer — Self-hosted mail catcher for development and testing (React, NestJS, Go, PostgreSQL, Redis)
• Eternals Music — Premium self-hosted music streaming client
• Eternals NPM Registry — Private npm package registry
• Eternals Docker Registry — Private container image registry

Each service is designed to run on your own infrastructure with no vendor lock-in.

Core Philosophy

• Privacy first — Your data stays on your servers
• Modular — Deploy only the services you need
• Scalable — Built for real-world production workloads
• Composable — Services integrate with each other and your existing stack

Ecosystem Flow

Developer → NPM Registry → Docker Registry → Mailer → Applications → Music Client

All Eternals services form a complete, end-to-end infrastructure platform.

Browse the Docs

Eternals Mailer Catch and inspect dev emails via SMTP. Built with React, NestJS, Go, PostgreSQL, and Redis.

Eternals Music Premium self-hosted music streaming.

NPM Registry Private npm package management.

Docker Registry Private container image registry.