Coolify vs Openship: Self-Hosted PaaS on a VPS or Dedicated Server (2026)

Coolify and Openship both turn a server you control into a push-to-deploy platform: connect a repository, let the tool build a container, and have it served over HTTPS behind a reverse proxy with a Let's Encrypt certificate. The overlap ends quickly once you look at maturity, where builds happen, and how much of the server each tool wants. This comparison is written for teams choosing between a VPS and a dedicated server, and it sticks to what the projects' own documentation and two independent write-ups (Bitdoze and CloudLinux.ro) actually state.

TL;DR

• Coolify is the established option: v4 is stable, it has a large community (around 62k GitHub stars as of September 2026) and 280+ one-click service templates (per Bitdoze). Its official minimum is 2 CPU cores and 2 GB RAM.
• Openship is young — pre-1.0 (v0.7.x as of September 2026), around 12.5k GitHub stars — and Apache 2.0 licensed. It auto-detects stacks with zero config, ships a CLI and desktop app alongside the dashboard, and can build off the production box.
• On a small VPS, where a build can starve the apps it is deploying of memory, Openship's off-box builds are the most practical difference. On a dedicated server, that matters much less.
• Openship includes a built-in transactional mail server (SPF/DKIM/DMARC); that is one of the features that sets it apart from Coolify.
• For critical production workloads today, the maturity gap favours Coolify. If you try Openship, pin versions and pilot it first.

What each platform is

Coolify

Coolify is a self-hosted PaaS that runs on almost any Linux machine you can reach over SSH: a VPS, a dedicated server, a VM, a 64-bit Raspberry Pi or an old laptop. Everything is organised into Projects, each holding resources: applications, databases and one-click services. Applications are built with build packs (Nixpacks, the beta Railpack, Static, Dockerfile or Docker Compose) or deployed from a prebuilt Docker image. Each server runs one coolify-proxy container, Traefik by default or Caddy as an alternative, which handles routing and Let's Encrypt certificates. A hosted Coolify Cloud also exists, where the Coolify team manages the instance and you bring your own servers.

Openship

Openship is an open-source deployment platform with built-in CI/CD, released under the Apache 2.0 license (github.com/oblien/openship). It runs as a managed Openship Cloud, fully self-hosted, or in a hybrid mode where one control plane manages both cloud capacity and your own servers. It auto-detects Node, Python, Go, Rust, PHP, Ruby, Java, .NET, Docker and monorepos without configuration, and you can drive it from a web dashboard, the openship CLI, a desktop app for Mac, Windows and Linux, a REST API, a Node.js SDK, or through MCP from AI tools. Traffic goes through an OpenResty edge with automatic Let's Encrypt certificates and zero-downtime swaps.

Side-by-side comparison

Request path: from git push to HTTPS

The clearest way to see the architectural difference is to follow one deploy from commit to live URL. In Coolify the build normally happens on the same server that will run the app; in Openship the build is a separate stage that can run anywhere, and the resulting immutable image is shipped to the server.

VPS or dedicated server: what actually changes

On paper both tools start at 2 GB of RAM. In practice, the platform itself takes a share of that before your first app runs: Bitdoze reports Coolify's idle footprint at roughly 1.5–2 GB. On a 2 GB VPS, that leaves very little headroom, and a build (installing dependencies, compiling assets) needs memory on top. When builds run on the same box as production, the risk is an out-of-memory kill in the middle of a deploy, taking a running app down with it.

Openship's answer is to move the build off the production box: build on your laptop or in the cloud, then ship the finished image over SSH. The server only has to run containers. Note that the two write-ups disagree on Openship's own floor: Bitdoze lists a 2 GB minimum with 4 GB recommended, while CloudLinux.ro says 4 GB is the minimum because Openship builds on first boot.

Coolify has its own way out: an optional separate build server. It cannot run resources itself; it builds images, pushes them to a registry, and your deployment servers pull them. That keeps build spikes away from production, at the cost of a second machine and a registry.

• Small VPS (around 2 GB): Coolify fits the official minimum but leaves little room for on-box builds. Openship with off-box builds keeps the server's memory for your apps; follow CloudLinux.ro's 4 GB advice if you build on the server.
• Mid-size VPS (4 GB and up): either platform is comfortable for a handful of apps; the choice comes down to maturity and workflow.
• Dedicated server: builds and apps can share plenty of cores and RAM, so on-box builds stop being a risk. Coolify's large template catalog and multi-server tooling become the bigger factors.

Security posture

Both platforms need deep access to the host, because they create containers and configure a proxy on it. That makes the dashboard itself a high-value target.

• Coolify — the first-admin race. After installation, the first account registered on port 8000 becomes the admin, with root on the server. Register immediately, or pre-create the root user with environment variables during install so registration is never exposed. Back up /data/coolify/source/.env — it holds the APP_KEY that encrypts values in Coolify's database. The step-by-step is in our Coolify setup guide.
• Openship — Docker socket access. The Openship API mounts the Docker socket, which is equivalent to root on the host. Don't expose the dashboard publicly without a trusted proxy, use a strong INTERNAL_TOKEN, and install with --no-host-control on a box that only manages remote servers. Our Openship setup guide includes a hardening checklist.
• Both: once the dashboard is on a domain behind the proxy, close the bootstrap ports (8000, 6001 and 6002 for Coolify). For Coolify's remote servers, restrict the SSH rule to the Coolify source address where possible.

Which should you pick?

CloudLinux.ro's summary matches ours: choose Coolify when you want maturity, a large community, integrations, or you are on a small server; choose Openship when zero config and a CLI/desktop workflow matter more. The known caveats point the same way — pin releases, back up the Postgres volumes, and pilot it before trusting it with critical workloads. Its documentation is thinner and its template catalog smaller.

Verdict

If you need something you can put production on this week, Coolify is the safer pick: stable v4, broad OS support, a large template catalog and a documented firewall, DNS and proxy story. Openship is the more interesting design — immutable images, off-box builds shipped over SSH, a real CLI and SDK, and mail built in — and it is worth piloting on a non-critical project, especially if your servers are small. Many teams will reasonably run Coolify today and keep an eye on Openship as it matures.

For what it's worth, we run bytevancer.com itself on a self-hosted Coolify instance: a Dockerfile build, auto-deploy on every push to main through Coolify's GitHub App, about three minutes per deploy, with Cloudflare in front. Our setup guide includes how we run bytevancer.com on Coolify, including the firewall change that silently broke auto-deploy and how we fixed it.

Ready to try one? Follow our step-by-step guide to setting up Coolify or our guide to setting up Openship on a VPS or dedicated server.