Coolify
coolify.io
An open-source, self-hostable platform-as-a-service for deploying applications, databases, and services on your own servers with a Heroku-like experience.
Why it is useful
Provides the managed deployment experience of Heroku or Railway but on infrastructure you control — deploy any Dockerfile, connect databases, manage SSL certificates, and handle zero-downtime deployments without writing your own deployment scripts. Completely open-source with an active development team. For teams wanting the convenience of a PaaS without the per-dyno pricing or data sovereignty concerns.