PortBayvsAntigravity
AntigravityThis one is less either/or than the name suggests: Antigravity is one of the 11 agents PortBay dispatches. Google Antigravity is an agent-first development platform — a desktop app whose Manager View orchestrates parallel agents across workspaces, plus the agy CLI, with Gemini, Claude and GPT-OSS models behind it. PortBay is a native macOS app where agents are dispatched from Kanban cards into a real local environment: managed PHP and Node, a per-project database, trusted HTTPS on a .test domain, a public tunnel. You can use Antigravity inside PortBay — or compare what each manages for you.
Which one is right for you
You want the full stack, open source.
You want your tasks on a board — cards with comments, assignment and an audit trail — and the environment handled locally: a real database, HTTPS on a real domain, email capture, a shareable tunnel, nothing leaving your Mac. You want to keep using whichever agent wins this month — Claude Code, Codex, Cursor or Antigravity itself — dispatched from the same card.
It already fits your workflow.
You want Google's frontier models orchestrated natively — Gemini 3.8, 3.7 and 3.6 Flash, Gemini 3.1 Pro, Claude Sonnet and Opus 4.6, and gpt-oss-120b, selectable per agent — with artifacts like implementation plans, walkthroughs and browser recordings, a browser subagent that verifies work in Chrome, and cloud sandboxes plus Google Cloud database connections. You're inside the Google ecosystem, you may want the Organization plan billed through Google Cloud, and the free tier's limits don't block you.
Where PortBay and Antigravity 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 Antigravity 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. Antigravity 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
Antigravity rows come from Antigravity’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.
Antigravity facts on this page were last checked against antigravity.google/pricing on . Pricing and limits change — check their site before you decide.
Using Antigravity already? Bring it.
This is the one comparison where you don't have to choose. PortBay detects an installed Antigravity CLI and dispatches it from a card like any other agent — so your Gemini-powered agent gets what Antigravity alone doesn't set up locally: a managed runtime, a per-project database, trusted HTTPS on a real .test domain and a tunnel to share the result. Keep Antigravity's editor and Manager View for what they're good at; give the agent a board and a running app when the task is a card.
Install PortBay and add your project folder — Antigravity is detected if its CLI is installed.
Press play — PortBay provisions the runtime, database and HTTPS for that project.
Create a card, assign Antigravity (or @mention it in a comment), move it to Todo, and it works against the running app.
PortBay vs Antigravity, in plain terms
Don’t see your question answered here? The docs go deeper — every feature, flag and failure mode.
Read the docsYes. Antigravity's agy CLI runs headless — and PortBay detects it alongside Claude Code, OpenAI Codex and Cursor. Assign a card to Antigravity and move it to Todo; the agent works inside your running local project, comments what it changed, and advances the card to Done.
PortBay runs the local environment and the task board. Antigravity orchestrates agents and verifies work in a browser, but it doesn't provision local runtimes, a local database, trusted HTTPS on a real domain or tunnels — its execution sandboxes and database connections live in Google's cloud. PortBay provisions all of that on your Mac, and tracks the work as Kanban cards with comments and @mention dispatch.
Antigravity is itself an agent platform: it brings the models (Gemini 3.x by default, with Claude and GPT-OSS selectable per agent), a Manager View for parallel agents across workspaces, rich artifacts like implementation plans and browser recordings, and a browser subagent that tests the result in Chrome. PortBay doesn't provide models or an editor — it dispatches the agent CLIs you already have and runs the environment around them.
Antigravity has a $0 Individual tier — Google's own wording is that it lets you "experience Antigravity without a subscription plan" — and a Google AI Pro or Ultra subscription raises the limits. Google renders those subscription prices client-side, and we could not read them from the pricing page, so this page deliberately quotes no figure; check Google's pricing page before you plan around a number. There is also a newer Organization plan sold through Google Cloud on consumption-based API pricing. PortBay itself imposes no usage limits; your agents run on whatever plan or API key you already have.
No. Antigravity is a closed-source fork of VS Code — the agent layer and Manager View are proprietary, and the platform is tied to your Google account. PortBay's desktop app is open source under AGPL-3.0 and everything — board, cards, comments, environment — stays on your Mac.
Give your projects and your agents a real local home.
Download for macOSFree & open source · macOS 11+ on Apple Silicon · Pro from $10/mo