PortBayvsFlyEnv
FlyEnvThese are the two closest tools in spirit: native local development without Docker, version switching per project, mkcert HTTPS on .test domains, Mailpit for mail, Cloudflare tunnels. FlyEnv (open source, BSD-3-Clause, free) goes broad — an on-demand module library spanning PHP, Node, Python, Java, .NET, Flutter, Ruby, Rust and more, five web servers, nine database engines, queues and search engines, on Windows, macOS and Linux. PortBay goes deep on the macOS web-dev workflow and adds the layer FlyEnv doesn't have: a Kanban board that dispatches Claude Code, Codex, Cursor or Antigravity — 11 agent CLIs in all — into the running project.
Which one is right for you
You want the full stack, open source.
You're on a Mac building PHP, Node or static web projects, you want one curated app where every project gets a runtime, database, HTTPS and mail capture without choosing modules — and you want to assign cards to AI coding agents that work against the running app. The agent task board is the structural difference; FlyEnv has nothing equivalent.
It already fits your workflow.
You're on Windows, or your stack runs past the web basics — Java, .NET, Flutter, Python services, Elasticsearch, RabbitMQ, cron jobs. FlyEnv's module library is genuinely the widest of any native dev environment, it's entirely free, and it ships updates at a pace most commercial tools don't match.
Where PortBay and FlyEnv actually differ
The table below has the row-by-row detail. These are the three shapes it cannot draw: the job you already use one of them for, the job only one of them does, and what survives the move.
PortBay and FlyEnv overlap on the everyday job: a local site on a real domain, over HTTPS, with the services it needs. If that is all you need, either will do it.
Claude Code
Codex
CursorMove a card to To Do and PortBay launches Claude Code, Codex or Cursor against a project that is already running. FlyEnv has no board to dispatch from.
Point PortBay at the folders you already have. They stay where they are, .test domains are re-issued on the first run, and databases are imported rather than rebuilt.
Feature by feature
FlyEnv rows come from FlyEnv’s own site and docs, on the date below. PortBay rows come from the app’s source. We mark partial support honestly — including where the other side wins.
FlyEnv facts on this page were last checked against flyenv.com on . Pricing and limits change — check their site before you decide.
Coming from FlyEnv?
Your projects are plain folders for both tools, so there's nothing to convert. Add the same folders to PortBay, press Play, and each gets its runtime, database, HTTPS and mail capture provisioned — then assign your first card to a coding agent, which is the part FlyEnv doesn't do. If your stack leans on FlyEnv's wider modules (Java, queues, search), keep it running alongside; the two don't conflict as long as only one tool serves a given project's ports.
Install PortBay and add the project folders FlyEnv has been serving.
Press Play — runtime, per-project database and trusted HTTPS come up without picking modules.
Create a card, assign Claude Code, Codex, Cursor or Antigravity, and move it to Todo — the agent works against the running app.
PortBay vs FlyEnv, in plain terms
Don’t see your question answered here? The docs go deeper — every feature, flag and failure mode.
Read the docsThe agent task board. PortBay pairs the local environment with a Kanban board: write a card, move it to Todo, and it dispatches Claude Code, Codex, Cursor or Antigravity against the running project — with a per-project database, trusted HTTPS and mail capture already provisioned for the agent to verify against. FlyEnv manages environments only; its AI modules run tools like Ollama or n8n as services rather than assigning work to coding agents.
Breadth. FlyEnv's module library covers a dozen or more language runtimes (Java, .NET, Flutter, Python, Go, Rust, Ruby, Erlang, Bun, Deno, Zig and more), five web servers, nine database engines including ClickHouse, Neo4j and Qdrant, plus RabbitMQ, Elasticsearch, Meilisearch, Typesense, Temporal, MinIO and RustFS — all installed on demand, all free, and on Windows as well as macOS and Linux. PortBay is deliberately curated around PHP, Node and static web projects, and has no Windows build.
Yes. FlyEnv is open source under the BSD-3-Clause license with no paid tier — flyenv.com has no pricing page at all — and development is donation-supported. Releases ship frequently: v4.18.2 landed on 31 August 2026. PortBay is open source under AGPL-3.0, free for up to 6 projects, with a $10/month Pro tier that removes the cap and adds custom tunnels and sync.
The philosophy is shared: native binaries instead of containers, mkcert-trusted HTTPS on local domains, Mailpit for mail, Cloudflare tunnels for sharing. The model differs: FlyEnv is modular — you choose runtimes and services from a library and they run as global services. PortBay is project-first — it detects each project's stack and provisions a runtime and database scoped to it, credentials injected into the project's environment.
Choose FlyEnv if you need Windows, languages beyond PHP and Node, or services like RabbitMQ and Elasticsearch — it's the widest free native toolbox available. Choose PortBay if you're doing web work and want the environment plus an agent board in one app — the cards your coding agents pick up come with a running app attached. Some developers run both: FlyEnv for the exotic services, PortBay for the daily loop.
Give your projects and your agents a real local home.
Download for macOSFree & open source · macOS 11+ on Apple Silicon · Pro from $10/mo