Juno
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Now in private beta

CodeDesignDeployShipPrototypeBuild with Juno.

Describe the app you want. Juno designs, plans, and builds it — running a real dev server right in your browser. No setup. No servers. No waiting.

Start building freeSee how it works

Free during beta · No credit card required

juno.app / builder
live
Chat
Designing tokens
Drafting schema
Planning build
Writing files
npm run dev
PreviewFilesTerminal
Generating files
Try prompts like
A pomodoro timer with lofi backgroundLanding page for my SaaS with pricingHabit tracker with streaks and heatmapAI chat with markdown supportPersonal finance dashboardRecipe book with search & tags
Beyond the chat

More than a text box.

Restyle your whole app in one click. Drop into a real terminal. Get an AI code review inline.

Pick a vibe
One click · Rewrites the whole design system
AaGo
Linear
AaGo
Stripe
AaGo
Brutalist
AaGo
Editorial
AaGo
Playful
AaGo
Retro
Welcome back
Your dashboard, in Linear.
Interactive terminal
Real WebContainer · npm, npx, ls, cat…
$

Everything you need to ship.

A full IDE, a real runtime, and an agent that plans before it codes.

Multi-phase agent

Juno designs tokens, drafts a schema, plans, and only then writes code — so builds don't fall apart at step three.

Runs in your browser

A real dev server via WebContainers. No cloud sandboxes to pay for, no cold starts, no queue.

Auto-fix loop

Terminal errors stream back to the agent. Broken installs and typos repair themselves.

Monaco + diffs

Every AI change shows up as a side-by-side diff. Approve per file, or lock files the AI can't touch.

Version history

Automatic snapshots before every edit. Revert with one click when an experiment goes sideways.

Your code, your machine

Generated projects live in your browser. Download the ZIP or push to StackBlitz anytime.

From prompt to preview in seconds.

01

Describe

Type what you want in plain English.

02

Plan

Juno designs tokens, schema, and an execution plan.

03

Build

The agent writes every file and installs deps.

04

Preview

Your app runs live in the browser — instantly.

Join the Juno private beta.

Free while we're in beta. Bring an idea, leave with a working app.

Get your invite