craft/prototyping

Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI. - mui/base-ui

Penpot: The open-source design tool for design and code collaboration - penpot/penpot

An open-source UI component library for building high-quality, accessible design systems and web apps for Vue. Previously Radix Vue - unovue/reka-ui

Unstyled, accessible, open source React primitives for high-quality web apps and design systems.

Material UI is an open-source React component library that implements Google’s Material Design. It’s comprehensive and can be used in production out of the box.

Explore the next evolution of Microsoft’s design system, enabling more seamless collaboration and creativity than ever. Move fluidly from design to development, between apps, and across platforms.

Unstyled UI components for building accessible web apps and design systems.

A headless UI library with over 45+ components designed to build reusable, scalable Design Systems that works for a wide range of JS frameworks.

An enterprise-class UI design language and React UI library with a set of high-quality React components, one of best React UI library for enterprises

Storybook is a frontend workshop for building UI components and pages in isolation. Thousands of teams use it for UI development, testing, and documentation. It’s open source and free.