Coss
A modern UI component library built on top of Base UI. Coss ui is a collection of beautifully designed, and composable components for your React apps.

Coss transforms React development with a modern UI component library that combines elegant design with effortless composability.
Built on top of Base UI, Coss delivers a refreshing alternative to Shadcn UI with components that are both visually polished and architecturally sound. Each component is thoughtfully crafted to integrate seamlessly into your React projects while maintaining the flexibility you need for custom implementations.
Key Features:
- Modern Design System: Clean, contemporary components that work beautifully out of the box
- Built on Base UI: Leverages a solid foundation for accessibility and performance
- Composable Architecture: Mix and match components to create exactly what you need
- React-Optimized: Designed specifically for React workflows and best practices
Who It's For: Coss is ideal for React developers and teams who want a polished component library without sacrificing flexibility. Whether you're building a SaaS dashboard, marketing site, or web application, Coss provides the building blocks to ship faster while maintaining design consistency.
With Coss, you get production-ready components that help you focus on building features, not reinventing UI patterns.