Intro

Once UI is an open-source design system for indie creators. It is built with Next.js and Supabase, and it is also positioned as a full frontend ecosystem for launching a complete product suite. The available pricing page also notes that it is trusted by 150+ indie creators.

Key Features

Once UI focuses on practical building blocks for product work. It says you can write 70% less code using human-readable, machine-writable syntax. It supports semantic layouts with Row, Column, and Grid, and includes 100+ pre-styled, open-source components.

The product also lets users manage themes and styles in a single file. It ships copy-paste React code for components, blocks, layouts, and pages. The pricing page mentions Once UI Core, Once UI Figma, and 4 free app templates, along with regular updates.

The free plan is listed at $0 per year and includes $600 product value and unlimited seats. The Pro offer is described as a limited offer, but the available evidence does not provide exact Pro pricing terms.

Who this is for

Once UI is aimed at indie creators who want a structured way to build products with reusable frontend parts. It may suit teams or solo builders who want open-source components, design-system support, and a setup that combines code and layout tools.

The evidence does not include detailed privacy, security, compliance, support, or billing terms, so those would need review before adoption.