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About

Build custom design tools without writing any code. Create responsive components, pages, and sites that you can use in any type of web project. Style markup templates with curated themes or your own design tokens. Manipulate parameters until the design is just right. Lock inputs for properties or combinations of properties you like to find your visual language. Instantly share your designs with colleagues or clients to present or collaborate. Publish hosted web pages along with hosted assets for styles as JS, JSON, and CSS. Design with scales and systems. Components automatically use your defined brand guidelines, retaining the ability to override with custom values at any time. The first design tool with full support for variable fonts. Automatically exposes all custom axis so you can get the fine-grained control variable fonts were meant to enable.

About

Once UI is an open source design system and component library built for Next.js (and paired with a matching design system in Figma), offering a flexible style system, 100+ ready-to-use UI components, and more than 75 copy-paste blocks to rapidly assemble web apps. It supports both simple static sites and more complex applications, thanks to pre-built, deployment-ready templates for portfolios, documentation sites, blogs, ecommerce stores, and dashboards (free and Pro versions). Once UI emphasizes “component-first” development, meaning developers don’t need to manually write utility-class-heavy styling (like with some CSS frameworks); instead, they use semantic variables and components that integrate design tokens for visual consistency. For creators used to tools like utility-class frameworks or component libraries, but who want faster development with fewer dependencies, Once UI simplifies building UIs without sacrificing design quality or accessibility.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Anyone searching for an open-source design tool to create responsive components

Audience

Independent developers, freelancers, startups and small teams searching for a tool to build polished web applications or websites quickly and consistently

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$24 per month
Free Version
Free Trial

Pricing

$128 per year
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Components AI
components.ai/

Company Information

Once UI
United States
once-ui.com

Alternatives

Alternatives

Categories

Categories

Integrations

CSS
Figma
Next.js

Integrations

CSS
Figma
Next.js
Claim Components AI and update features and information
Claim Components AI and update features and information
Claim Once UI and update features and information
Claim Once UI and update features and information