Coolify: Self-Hosted PaaS and Heroku Alternative
Coolify is a self-hosted platform-as-a-service. It gives you the git-push-to-deploy workflow of Heroku, Vercel, or Netlify, running entirely on servers you control.
Why self-host Coolify
Managed platforms are excellent until the bill scales with your traffic or a pricing change lands mid-project. Coolify puts the same workflow on a VPS you already rent: connect a Git repository, and it builds, deploys, issues TLS certificates, and keeps the service running. The cost becomes the server, not per-seat and per-build pricing.
What it does
Coolify falls into the DevOps and Deployment category of self-hosted software. It deploys static sites, full-stack applications, and Docker Compose stacks, provisions databases including PostgreSQL, MySQL, MongoDB, and Redis, and offers a catalogue of over 280 one-click services. Automatic HTTPS through Let’s Encrypt, preview deployments per pull request, scheduled backups, and webhook-driven redeploys are all built in, and version 4.0 added native multi-server orchestration so one Coolify instance can manage a fleet.
Community traction
The project has over 60k stars on GitHub, making it one of the most popular self-hosted projects of the last few years and the usual reference point in any discussion of open-source PaaS.
Deployment
Installation is a single shell script on a fresh Ubuntu or Debian server, after which everything is managed from the web interface. Coolify then manages Docker on that host itself, so you do not write compose files for the applications it deploys.
Alternatives
Dokploy is the closest comparison, lighter and built on Docker Swarm with Traefik. CapRover is the long-standing option in this space, and Dokku is the minimal, CLI-driven ancestor of all of them.
Maturity
The current release is v4.3.1, with active weekly development and a large plugin and service catalogue.
License
Coolify is released under the Apache License 2.0.
Links
Coolify is the obvious starting point if you want to stop paying per-seat deployment fees without going back to writing systemd units by hand.