coolify

An open-source, self-hostable PaaS alternative to Vercel, Heroku & Netlify that lets you easily deploy static sites, databases, full-stack applications and 280+ one-click services on your own servers. Maintained by coollabsio on GitHub, where it has earned 58,465 stars from the community.

It's actively developed around coolify, databases, deployment, and is a solid reference for anyone building with these tools.