PortBay vs Docker / OrbStack

PortBay is an open-source (AGPL-3.0), container-free local dev manager for macOS: native runtimes, automatic HTTPS .test hostnames, and a Caddy reverse proxy managed through a JSON registry. Docker is the industry-standard container engine for building and running container images that match production environments. OrbStack is a fast, lightweight Docker Desktop alternative for macOS that runs the same Docker images with lower overhead. The choice is not really "which is better" — it is "do you need container-level parity, or do you want to run your code natively?"

At a glance

	PortBay	Docker / OrbStack
License	AGPL-3.0 (open source)	Docker Engine: open source · Docker Desktop / OrbStack: proprietary
Price	Free · optional Pro	Docker Desktop: free / paid · OrbStack: free / paid
Containers	None (native)	Container-based
Runtimes	Node, PHP, static	Any (containerized)
Local HTTPS + .test	Built in (mkcert)	Manual (traefik, nginx-proxy, or custom setup)
Managed DNS	Bundled dnsmasq	Manual / third-party
Reverse proxy	Caddy (automatic)	Manual (container config)
Footprint	Small (native)	Large (container engine + images)
Platform	macOS (Apple Silicon)	macOS, Linux, Windows
Automation	CLI + MCP	CLI (docker, compose), full API

What they share

Both are developer tools for running web applications locally. Both support Node and PHP workloads. Both can be used alongside a CI/CD pipeline. Both have active communities and are under active development.

Where PortBay is different

PortBay runs your code directly on the host — the Node or PHP process runs natively, the same as if you typed npm run dev in your terminal, but with automatic HTTPS, DNS, and proxy management layered on top. There are no images to build, no docker-compose.yml to maintain, no container networking to debug.

Real HTTPS .test hostnames come out of the box. With Docker, getting per-project HTTPS locally requires setting up a reverse proxy container (Traefik, nginx-proxy, Caddy in a container) and configuring it — it's doable but is setup work you do yourself. PortBay handles this automatically.

The declarative JSON registry and full CLI mean every project action (start, stop, add domain, share via Cloudflare tunnel) is scriptable from the terminal or via PortBay's MCP server, without writing Dockerfiles.

For developers running Apple Silicon Macs, native execution avoids the performance hit that some workloads experience inside a container layer, particularly around filesystem I/O.

Where Docker / OrbStack is stronger

Docker's core strength is production parity. If your production environment runs a specific container image, you can run that exact image locally. Language versions, OS-level packages, init systems, cron jobs inside the container — all match. PortBay cannot replicate that because it runs your code natively, not inside an image.

Docker and OrbStack are cross-platform. The same docker-compose.yml runs on macOS, Linux, and Windows. If your team is cross-OS, containers are the portable artifact.

For complex microservice architectures where you run ten services simultaneously (databases, queues, cache layers, service meshes), Docker Compose is the mature, well-documented way to wire them together. PortBay is a per-project tool and is not trying to replace container orchestration.

OrbStack specifically is worth calling out: on Apple Silicon it is meaningfully faster and lighter than Docker Desktop, and it exposes a Linux VM you can SSH into. If you are already on a container-based workflow, OrbStack is a good desktop runtime.

Choose Docker / OrbStack when

• Production parity is critical — you deploy a specific container image and need to match it locally.
• Your team spans macOS, Linux, and Windows and needs one portable configuration.
• You are running a multi-service stack (databases, queues, sidecars) that is already described in docker-compose.yml.
• Your project's dependencies have complex OS-level requirements (native extensions, specific Linux packages) that are easier to capture in a Dockerfile.

Choose PortBay when

• You want native performance without a container layer.
• Per-project HTTPS .test hostnames with no manual setup matter.
• You run a mix of Node and PHP projects and want one lightweight tool to manage them.
• You prefer not to maintain Dockerfiles and Compose files for local dev.
• Open source under AGPL-3.0 matters for your tooling choices.
• You want MCP server support for AI-assisted development workflows.

Bottom line

Docker and OrbStack are the right answer when production parity or cross-platform portability is the priority. PortBay is the right answer when you want fast, native local development with zero container overhead and automatic HTTPS built in. Install PortBay and skip the Dockerfile.

---

See all comparisons — developers also compare PortBay with DDEV and Local by WP Engine.