Base Web

Freemium

Uber's React component library and design system.

Alternatives & related tools

Beautifully designed components you can copy and paste into apps.

Modern, responsive, pre-built blocks for marketing websites.

The npm for design engineers — copy-paste minimal React components.

The best new design systems, identity intros and rebrand videos.

A huge collection of design systems and pattern libraries.

Google's open-source design system for building products.

Apple's Human Interface Guidelines for great app design.

Shopify's design system for crafting commerce experiences.