Short answer: All three are self-hosted "Heroku on your own server" — push a repo or a compose file, get a deployed app with automatic HTTPS. Coolify is the most feature-complete with the nicest UI and the biggest community. Dokploy is the newer, leaner challenger built on Docker Swarm with a clean interface. CapRover is the mature, battle-tested veteran with a huge one-click app catalog but an older feel. Pick Coolify for range, Dokploy for simplicity, CapRover for stability and its app store.
I've been running Coolify in production, so I'm not neutral — but here's the honest three-way, including where each one is actually the better pick.
Side by side
| Coolify | Dokploy | CapRover | |
|---|---|---|---|
| Base tech | Docker + Traefik | Docker Swarm + Traefik | Docker Swarm + nginx |
| Reverse proxy | Traefik (auto Let's Encrypt) | Traefik (auto Let's Encrypt) | nginx (auto Let's Encrypt) |
| Git push deploy | Yes (GitHub/GitLab/Gitea) | Yes | Via Dockerfile / tarball / git |
| docker-compose apps | Yes, first-class | Yes | Limited |
| Multi-server | Yes (add servers over SSH) | Yes | Yes (Swarm cluster) |
| One-click apps | Growing template library | Templates, smaller set | Large, mature app store |
| UI polish | High | High (modern) | Dated but functional |
| Databases + backups | Managed DBs + scheduled backups | Managed DBs + backups | Via one-click apps |
| Maturity | Rapidly maturing, big community | Youngest, fast-moving | Oldest, very stable |
| Best for | Most web apps + services | Simple, Swarm-native setups | Stability + app catalog |
What they all share
The core pitch is identical: run one dashboard on a VPS, connect a git repo, and get git-push deploys with automatic Let's Encrypt certificates — no hand-written nginx configs, no certbot cron. All three are open source and free; you pay only for the server they run on. If you've used Heroku, Render or Vercel, that's the experience, self-hosted.
So the choice isn't what they do — it's the trade-offs in how.
Coolify — the feature leader
Coolify does the most: applications from git, full docker-compose services, managed databases with scheduled backups, multi-server management over SSH, and a genuinely good UI. Its community exploded over the last couple of years, which means more templates, more docs, and faster bug fixes. It's what I reach for when a project might grow into "app + database + a couple of services".
The cost is surface area — more features means more moving parts, and it wants a bit more RAM. If you want to go deeper, I wrote a full setup-and-cheats guide: /coolify-self-hosted-paas/.
Pick Coolify if: you're running several web apps and services, you want docker-compose support and managed databases, and you like a polished dashboard.
Dokploy — the lean challenger
Dokploy is the newest of the three and it shows in the good ways: a clean, modern UI and a straightforward mental model on top of Docker Swarm. It covers the essentials — git deploys, Traefik with auto-TLS, databases, backups — without Coolify's breadth. For a single server running a handful of apps, it's fast to learn and stays out of your way.
Being young is the trade-off: smaller community, fewer templates, and features still landing. If you value "simple and modern" over "does everything", it's a strong pick.
Pick Dokploy if: you want a clean, minimal PaaS for a few apps and you're happy on the newer end of the maturity curve.
CapRover — the reliable veteran
CapRover has been around the longest and it's rock solid. Its standout is the one-click app store — databases, tools, whole apps deploy from a catalog with sane defaults, which is great when you just want a WordPress or a Postgres up now. It's Swarm-based and CLI-friendly, so it scripts well.
The UI feels its age next to the other two, and docker-compose support is weaker. But "boring and stable" is a feature when it's hosting things you don't want to babysit.
Pick CapRover if: you value maturity and the app catalog over UI shine, and you like a CLI-driven workflow.
FAQ
Which is the best Heroku alternative to self-host? For most people in 2026, Coolify — it's the most capable and has the momentum. Dokploy if you want something leaner and newer; CapRover if you want the most proven option with an app store.
Are they really free? Yes, all three are open-source and free. Your only cost is the VPS or server they run on. There's no per-app or per-seat licensing.
Do I need Docker Swarm? Dokploy and CapRover build on Swarm (handled for you). Coolify uses plain Docker plus Traefik and can manage multiple standalone servers over SSH. You don't configure Swarm by hand in any of them.
Can they deploy from a private GitHub repo? Yes — all three support connecting git providers (GitHub/GitLab/Gitea) and deploying on push, private repos included, via app or deploy keys.
Which uses the least resources? Dokploy and CapRover are lighter at idle; Coolify wants a bit more RAM for its broader feature set. Budget 2 GB minimum for any of them, more if you build images on the same box.
Bottom line
There's no wrong answer here — they're all a massive upgrade over hand-rolling nginx + certbot. I run Coolify because I want compose services and managed databases in one place, but if I were standing up a single lean app I'd genuinely consider Dokploy, and for a stable app-store box CapRover still earns its spot. Whichever you pick, get the host itself sorted first with /docker-install-ubuntu/, and if you're comparing the proxy layer underneath them, /caddy-vs-nginx-auto-https/ covers that trade-off.
