CapRover vs Dokku vs Coolify: Which Heroku Alternative in 2026?

Q: What Makes Dokku Great?

Absolute simplicity. Dokku is a ~500KB shell script (plus Docker). On a $6/month VPS, it runs Postgres, Redis, and multiple Node.js apps with minimal overhead. There's no UI to maintain, no extra containers, no complexity. Heroku buildpack compatibility. If you have an existing Heroku app, it likely deploys to Dokku without changes. The same Procfile, the same buildpacks, the same heroku config style env vars. Mature plugin ecosystem. Need Postgres? dokku plugin:install postgres. Redis? Same. Le

Q: What Makes CapRover Great?

Web UI. For teams where not everyone is comfortable with SSH, CapRover's dashboard provides a visual interface for deploying apps, setting env vars, managing databases, and viewing logs. One-click app store. ~100 pre-configured apps (Postgres, Redis, Ghost, Mattermost, Gitea, etc.) installable in one click from the UI — no Docker Compose needed. Docker Swarm clustering. CapRover's multi-server support is more production-ready than Dokku's. Add worker nodes from the dashboard and deploy replicate

Q: What Makes Coolify Great?

280+ one-click templates. The largest app library of any self-hosted PaaS — databases, analytics, monitoring, productivity tools, and more. Preview deployments. Coolify generates PR preview URLs automatically, matching Vercel's workflow. Each pull request gets its own deployment with a unique URL. Docker Compose support. Unlike Dokku and CapRover, Coolify handles multi-container Docker Compose files natively — useful for any app with more than one service. Active development. Coolify ships impro

TL;DR

All three are solid open source Heroku alternatives. Dokku is the simplest and lightest — pure CLI, minimal overhead, git push and forget. CapRover adds a web UI and one-click app marketplace. Coolify is the most feature-rich with 280+ templates, preview deployments, and active development. Choose Dokku for simplicity, CapRover for app store, Coolify for the closest Vercel-like experience.

Key Takeaways

Dokku: Lightest, CLI-only, Heroku buildpack compatible, ~31K GitHub stars — ideal for developers who live in the terminal
CapRover: Web UI + CLI, one-click apps, Docker Swarm cluster support, ~14K stars — great middle ground
Coolify: Full-featured, 280+ templates, preview deployments, active development, ~44K stars — best Vercel/Netlify replacement
All three: free, open source, git push to deploy, auto SSL, custom domains
2026 recommendation: Coolify for new projects; Dokku for minimal setups; CapRover fills the gap between them

Why Leave Heroku?

Heroku ended its free tier in November 2022. The cheapest Heroku plan is now $5/dyno/month — and that's for a single lightweight container. A typical app (web + worker + Postgres) runs $30-50/month on Heroku.

The self-hosted alternatives provide equivalent capability for $6-15/month total (VPS cost).

Comparison Table

Feature	Dokku	CapRover	Coolify
GitHub Stars	~31K	~14K	~44K
License	MIT	Apache 2.0	Apache 2.0
Interface	CLI only	Web UI + CLI	Web UI + CLI
Git push deploy	✅	✅	✅
Heroku buildpacks	✅	✅	Via Nixpacks
Dockerfile support	✅	✅	✅
Docker Compose	✅	❌	✅
One-click apps	❌ (plugins)	✅ (~100)	✅ (280+)
Preview deployments	❌	❌	✅
Multi-server	Via clustering	✅ (Swarm)	✅ (Swarm exp.)
Auto SSL	✅	✅	✅
Resource usage	Minimal	Medium	Medium-high
Plugin ecosystem	Large	Medium	Growing
Active development	Moderate	Slowing	Very active

Dokku: The Minimalist's Choice

Dokku is the original Heroku-on-your-own-server. Created in 2013, it implements the Heroku workflow (git push, buildpacks, procfiles) on a single Linux machine. With ~31,000 GitHub stars and over a decade of production use, it's the most battle-tested option.

What Makes Dokku Great

Absolute simplicity. Dokku is a ~500KB shell script (plus Docker). On a $6/month VPS, it runs Postgres, Redis, and multiple Node.js apps with minimal overhead. There's no UI to maintain, no extra containers, no complexity.

Heroku buildpack compatibility. If you have an existing Heroku app, it likely deploys to Dokku without changes. The same Procfile, the same buildpacks, the same heroku config style env vars.

Mature plugin ecosystem. Need Postgres? dokku plugin:install postgres. Redis? Same. Let's Encrypt SSL? Built-in. The plugin system has been around for 10 years and covers virtually every need.

Deploying with Dokku

# Install (Ubuntu 24.04):
wget -NP . https://dokku.com/bootstrap.sh
sudo DOKKU_TAG=v0.35.0 bash bootstrap.sh

# Create an app:
dokku apps:create myapp

# Set environment variables:
dokku config:set myapp DATABASE_URL=postgresql://...

# Create a Postgres database:
dokku plugin:install https://github.com/dokku/dokku-postgres.git postgres
dokku postgres:create mydb
dokku postgres:link mydb myapp

# Enable SSL (Let's Encrypt):
dokku plugin:install https://github.com/dokku/dokku-letsencrypt.git
dokku letsencrypt:enable myapp

# Push from your local machine:
git remote add dokku dokku@YOUR_SERVER_IP:myapp
git push dokku main

That's it. The app is live at https://myapp.yourdomain.com.

Dokku Limitations

No web UI — everything via SSH commands (loved by some, hated by others)
No Docker Compose — apps are single-container; multi-service apps need multiple Dokku apps linked together
No preview deployments — there's no built-in PR preview URL feature
Single-server focus — multi-server clustering exists but is not Dokku's strength

CapRover: The Balanced Middle Ground

CapRover sits between Dokku's minimalism and Coolify's feature-richness. It adds a web UI, a one-click app marketplace, and Docker Swarm clustering while keeping the setup simple.

What Makes CapRover Great

Web UI. For teams where not everyone is comfortable with SSH, CapRover's dashboard provides a visual interface for deploying apps, setting env vars, managing databases, and viewing logs.

One-click app store. ~100 pre-configured apps (Postgres, Redis, Ghost, Mattermost, Gitea, etc.) installable in one click from the UI — no Docker Compose needed.

Docker Swarm clustering. CapRover's multi-server support is more production-ready than Dokku's. Add worker nodes from the dashboard and deploy replicated apps across them.

Deploying with CapRover

# Install (Ubuntu 24.04, must be root):
docker run -e BY_PASS_PROXY_CHECK='TRUE' \
  -v /var/run/docker.sock:/var/run/docker.sock \
  caprover/caprover-cli caprover serversetup

# CLI deployment:
npm install -g caprover
caprover deploy  # From your app directory

Or push via captain-definition file in your repo:

{
  "schemaVersion": 2,
  "dockerfilePath": "./Dockerfile"
}

# git push style:
git push caprover main  # Works after setting up the git remote

CapRover Limitations

No Docker Compose — single-container apps only (biggest limitation)
Development slowing — CapRover's GitHub activity has slowed compared to 2022-2023; Coolify has overtaken it in features and community
No preview deployments — PR preview URLs require manual setup

Coolify: The Vercel Replacement

Coolify is the most actively developed option, with ~44,000 GitHub stars and a weekly release cadence. It's the closest open source equivalent to Vercel/Netlify/Heroku.

What Makes Coolify Great

280+ one-click templates. The largest app library of any self-hosted PaaS — databases, analytics, monitoring, productivity tools, and more.

Preview deployments. Coolify generates PR preview URLs automatically, matching Vercel's workflow. Each pull request gets its own deployment with a unique URL.

Docker Compose support. Unlike Dokku and CapRover, Coolify handles multi-container Docker Compose files natively — useful for any app with more than one service.

Active development. Coolify ships improvements weekly. The codebase is modern (PHP/Laravel + React), well-documented, and the community is large.

Deploying with Coolify

Everything through the web UI:

Connect GitHub repo
Set domain + env vars
Click Deploy

Or via API/CLI for automation. Git push auto-deploy is configured from the dashboard.

Coolify Limitations

Docker Swarm experimental — multi-node deployments work but are marked experimental
Higher resource usage — Coolify itself consumes ~200-400MB RAM (vs Dokku's ~50MB)
Complexity — more options means more surface area to configure correctly

Decision Guide

Choose Dokku if:
  → You're a solo developer or small team comfortable with CLI
  → You want the lightest possible overhead ($6 VPS, no wasted RAM)
  → You're migrating directly from Heroku (buildpack compatibility)
  → You value 10+ years of battle-tested stability
  → You don't need a web UI or preview deployments

Choose CapRover if:
  → Your team needs a UI but Coolify feels like overkill
  → You want Docker Swarm clustering with less complexity than Coolify
  → Your apps are single-container (no Docker Compose needed)
  → You're okay with slower feature development

Choose Coolify if:
  → You want the closest experience to Vercel/Heroku/Netlify
  → You need preview deployments (PR URLs)
  → You want 280+ one-click service templates
  → You're deploying Docker Compose apps
  → Active development and community support matter
  → You're comfortable with more features = more to configure

Consider Dokploy if:
  → Docker Swarm is a first-class requirement
  → You want native multi-node scaling from day one
  → (See our [Dokploy vs Coolify comparison](/blog/dokploy-vs-coolify-self-hosted-paas-2026))

Quick Setup Summary

Platform	Time to First Deploy	Minimum VPS
Dokku	~10 minutes	512 MB RAM ($4/mo)
CapRover	~15 minutes	1 GB RAM ($6/mo)
Coolify	~20 minutes	2 GB RAM ($6-9/mo)

All three provide free alternatives to Heroku's $5-50+/month plans.

See all open source Heroku alternatives at OSSAlt.com/alternatives/heroku.

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