Open-source alternatives to Heroku

2 open-source and self-hostable projects you can use instead of Heroku, with license, free-edition limits and setup checked against official sources.

CoolifyAlternative to Heroku, Vercel, Netlify
A platform for deploying applications, databases and services on your own servers over SSH.
Apache-2.0Self-hostedCloud
63k
GitHub stars
Fully featured free edition
DokkuAlternative to Heroku
A self-hosted platform as a service that runs on one server, builds apps from git push using Docker, and accepts Heroku-style buildpacks.
MITSelf-hosted
32k
GitHub stars
Some features paywalled

Coolify — Coolify can replace Heroku for git-push style deployments, databases and one-click services running on servers you own.
Dokku — Dokku calls itself an open-source alternative to Heroku; you push Heroku-compatible apps with git to your own server.