Self-hosting your applications doesn’t have to mean wrestling with SSH, Nginx configs, and systemd services. Coolify, Dokku, and CapRover are the three best self-hosted PaaS platforms in 2026 — each offering a Heroku-like experience on your own server. But they take very different approaches to getting you there.
Why Self-Hosted PaaS Matters
Heroku killed its free tier in 2022. Vercel, Railway, and Render charge premium prices for managed hosting. If you have a $5-20/month VPS sitting idle, a self-hosted PaaS turns it into a Heroku-grade deployment platform at a fraction of the cost.
For solo developers and small teams, the math is it’s a product.
Where Coolify Falls Short
- Resource requirements: Coolify itself uses 500MB-1GB RAM. On a $5/month VPS with 1GB RAM, that leaves very little for your applications. I recommend at least 4GB RAM for a comfortable Coolify experience.
- Update process: Coolify updates frequently (weekly), and updates occasionally break things. The update process itself is simple (one click), but you should test updates on a staging server first.
- Documentation gaps: The documentation covers basics well but gets thin on advanced topics (custom Nginx configurations, multi-server networking, backup strategies). Expect to read source code or community Discord for edge cases.
- Young project: Coolify is actively developed but still maturing. Some features (multi-tenant access control, advanced monitoring) are rough around the edges. Not as battle-tested as Dokku.
Pricing
Free and open source (Apache 2.0). Cloud offering (managed Coolify) starts at $5/month.
Dokku: The Minimalist’s Choice
Dokku is the original self-hosted PaaS — a collection of shell scripts that turns a Linux server into a Heroku-like platform. It’s been around since 2013 and is rock-solid stable.
What Makes Dokku Stand Out
- Minimal footprint: Dokku itself uses under 50MB RAM. It’s essentially a thin wrapper around Docker that manages build, deploy, and routing. On a 1GB VPS, Dokku leaves almost all resources for your applications.
- Heroku buildpack compatibility: Dokku uses the same buildpack system as Heroku. If your app deploys on Heroku, it deploys on Dokku — usually without any changes. This makes migration from Heroku trivial.
- Git push deployment:
git push dokku mainbuilds and deploys your app. That’s it. No UI needed, no complex configuration. The CLI workflow is fast and developer-friendly. - Plugin ecosystem: 200+ plugins for databases, caching, logging, monitoring, and more.
dokku plugin:install postgresadds a managed PostgreSQL database. The plugin system is mature and well-documented. - Stability: Dokku has been stable for 10+ years. It rarely breaks, and when it does, the fix is usually simple (it’s just shell scripts). No surprise updates, no UI bugs, no resource bloat.
Where Dokku Falls Short
- No web UI: Dokku is entirely CLI-based. There’s no management dashboard, no visual log viewer, no one-click service deployment. If you’re not comfortable in a terminal, Dokku isn’t for you.
- Single server only: Dokku manages one server. No multi-server support, no clustering. If you outgrow one server, you need to move to a more complex platform (Coolify, Kubernetes, etc.).
- Manual SSL: SSL setup requires running
dokku letsencrypt:enablefor each app. It works, but it’s not the seamless one-click experience Coolify provides. - Learning curve: The CLI-first approach is powerful but requires reading documentation. New users spend 2-4 hours setting up their first deployment, vs. 30 minutes on Coolify.
Pricing
Free and open source (MIT license). No paid tiers, no commercial offerings.
CapRover: The Docker-First Platform
CapRover sits between Coolify and Dokku — it has a web UI (like Coolify) but focuses on Docker-based deployments (like Dokku). It’s the simplest way to deploy Docker containers on your own server.
What Makes CapRover Stand Out
- One-click apps: CapRover’s marketplace offers 100+ one-click deployable apps — PostgreSQL, MySQL, MongoDB, WordPress, Ghost, Nextcloud, and more. One click, and it’s running.
- Simple UI: Clean, functional web interface for managing apps, databases, and server settings. Not as polished as Coolify’s UI, but clear and usable.
- Docker-focused: CapRover treats everything as a Docker container. Deploy from Dockerfile, Docker Hub image, or CapRover’s app format. If you’re already using Docker, CapRover is a natural fit.
- Cluster support: CapRover supports multi-node clusters. Add worker nodes to scale horizontally. This is a significant advantage over Dokku for growing applications.
- Easy setup: One-line install:
docker run -v /var/run/docker.sock:/var/run/docker.sock caprover/caprover. Up and running in 5 minutes.
Where CapRover Falls Short
- Stagnant development: CapRover’s last major update was in 2023. Bug fixes and minor updates continue, but new features are rare. The project feels maintained but not actively developed.
- Less flexible than Coolify: CapRover doesn’t support docker-compose deployment natively. Each container is managed independently. For multi-service applications, this is a limitation.
- Backup strategy: CapRover’s backup tool is basic — it dumps container data but doesn’t handle service-specific backup logic (e.g., PostgreSQL’s pg_dump). You’ll need custom scripts for reliable backups.
- Documentation: The documentation is thin compared to Coolify and Dokku. Many advanced configurations require reading GitHub issues or community forums.
Pricing
Free and open source (Apache 2.0). No paid tiers.
Feature Comparison
| Feature | Coolify | Dokku | CapRover |
|---|---|---|---|
| Web UI | ⭐⭐⭐⭐⭐ | ❌ | ⭐⭐⭐ |
| One-click services | 50+ | 200+ (plugins) | 100+ |
| Docker Compose | ✅ | ✅ (plugin) | ❌ |
| Multi-server | ✅ | ❌ | ✅ |
| RAM footprint | 500MB-1GB | <50MB | 200-400MB |
| Git push deploy | ✅ | ✅ | ✅ |
| Automatic SSL | ✅ (one-click) | ✅ (CLI per app) | ✅ (one-click) |
| Heroku buildpacks | ✅ (Nixpacks) | ✅ | ❌ |
| Active development | Very active | Stable/maintained | Maintained |
Which Self-Hosted PaaS Should You Pick?
Choose Coolify if:
- You want a modern, feature-rich platform with a great UI
- You need one-click database and service deployments
- You’re managing multiple servers
- You have at least 4GB RAM on your server
Choose Dokku if:
- You prefer CLI over GUI
- You want maximum stability and minimal resource usage
- You’re migrating from Heroku
- You’re on a low-resource VPS (1-2GB RAM)
Choose CapRover if:
- You want a simple UI for Docker deployments
- You need cluster support for horizontal scaling
- You’re comfortable with a project that’s in maintenance mode
- You deploy primarily from Docker Hub images
FAQ
Can I run these on a $5/month VPS?
Dokku yes (under 50MB RAM). CapRover maybe (200-400MB, tight on 1GB). Coolify no (500MB-1GB minimum). For $5/month VPS (typically 1GB RAM), Dokku is the clear choice. Spring for a $10/month 4GB VPS if you want Coolify.
How does Coolify compare to Kubernetes?
Coolify is simpler and sufficient for 90% of self-hosting use cases. Kubernetes is better for large-scale, multi-team deployments. If you’re managing 1-10 servers, Coolify is the better choice. If you’re managing 50+ servers, use Kubernetes.
Can I migrate between these platforms?
Painful but possible. Apps deployed via Docker can be moved by exporting images and re-importing. Database migrations require dump-and-restore. Budget 1-2 days for migration and test thoroughly.
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