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Best Open-Source Alternatives to Heroku

Heroku killed its free tier in 2022 and never recovered indie-developer trust. The open-source self-hosted PaaS alternatives turn a $5 VPS into a Heroku-like git-push deploy experience — for the price of the VPS.

TL;DR — top pick

Coolify

Coolify is the 2026 leader for self-hosted PaaS. Beautiful UI, deploys from git, supports Docker / Nixpacks / Dockerfile, manages databases, SSL via Let's Encrypt, multi-server.

github.com/coollabsio/coolify

All 3 alternatives ranked

#1

Coolify

Apache 2.0Self-hostable★ ~45k
github.com/coollabsio/coolify

Coolify is the 2026 leader for self-hosted PaaS. Beautiful UI, deploys from git, supports Docker / Nixpacks / Dockerfile, manages databases, SSL via Let's Encrypt, multi-server. Run on a $5 Hetzner box and host unlimited apps. The Vercel/Heroku replacement most indie devs have switched to.

Pick Coolify if

You want git-push-to-deploy on your own hardware. Or you're paying $200+/month on Heroku/Vercel and want to cut that to $5.

Skip if

You don't want to manage a server at all — Vercel's free tier is still better for that.

#2

Dokku

MITSelf-hostable★ ~30k
github.com/dokku/dokku

Dokku is the OG self-hosted Heroku replacement — bash scripts on top of Docker, deploys via `git push`, plugin ecosystem for Postgres/Redis/Let's Encrypt. Less polished than Coolify, but it's been stable since 2013 and you can fully understand the entire system in an afternoon.

Pick Dokku if

You want minimum magic — bash + Docker + git, nothing else. Or you need a Heroku replacement on a single small VPS.

Skip if

You want a GUI for managing multiple environments and team members — Coolify is the polished answer.

#3

CapRover

Apache 2.0Self-hostable★ ~13k
github.com/caprover/caprover

CapRover sits between Dokku (CLI-first) and Coolify (multi-server polish). One-click apps for WordPress / Ghost / Postgres, web-based dashboard, Docker Swarm under the hood. Good middle-ground if you want a GUI but don't need Coolify's breadth.

Pick CapRover if

You're running a side project on a single VPS and want a friendly dashboard without Coolify's complexity.

Skip if

You're running production multi-region deployments — Coolify or Kamal handle that better.

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Best Open-Source Heroku Alternatives on GitHub (2026) — Coolify & more — StackPicks — StackPicks