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4.9/5 from 20,000+ builders

The Product OS for modern teams.

Compose interfaces. Connect your stack. Ship to production. Every layer speaks one design system — from Figma to production, from solo to scaled team.

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Works with the tools you already trust

  • Stripe
  • Supabase
  • Vercel
  • Linear
  • Auth0
  • Resend
  • Figma

Features

One design system. Every layer.

Five layers that design, build, connect, and ship your product — all on one design system every layer follows.

The Foundation

Tokens, components, themes — the contract every layer follows. Open and free.

244 tokens · 26 components · 2,000+ variants

Visual & AI Builder

Compose visually or from a prompt. Output stays on the contract.

Ship to production

Code export, CMS, A/B testing, analytics. Production surfaces, not prototypes.

Your stack, connected

Supabase, Stripe, Auth0, Vercel — Plus UI orchestrates the tools you already trust.

AI, woven through

Not a separate product. AI generates components, themes, and copy inside your design system.

10,000+ building blocks

Components, blocks, templates, layouts — every piece already speaks the contract.

By the numbers

The system, measured.

Real, countable figures — the teams building on the library, the tokens every layer reads, the score this page holds.

Product OS

One place to compose, ship, and optimize.

Design on the system, export production code, and measure what shipped — the whole lifecycle on one Foundation, so nothing drifts.

Compose

Build visually or generate from a prompt — every output already on your design system.

Foundation

Shared tokens, components, and themes — the one source of truth every other layer builds on.

Explore Foundation

Ship

Turn what you composed into a running product, with the design system intact.

Code Export

Export framework-agnostic production code — not prototype markup — straight into your repository.

Explore Code Export

Optimize

Measure what you shipped and improve it — variants, metrics, and monitoring in one place.

A/B Testing

Run variants against what you shipped — no rebuilds, results tied to the live product.

Explore A/B Testing

Scale

One OS, whatever your scale.

Ship like a team of one.

Design, build, and deploy on one system — no handoffs, no five tools to stitch together.

Get started

Build your whole product in one place.

Plus UI is the Product OS where modern teams design, build, connect, and ship — without the handoffs between tools.

Join for freeSee how it works