Open source. Open possibilities.

Panda is a universal, type-safe CSS-in-JS framework for design systems. It extracts styles at build time, outputs modern CSS with cascade layers and variables, supports recipes and variants, and works with most JS frameworks.

Priceline Design System is Priceline.com's open-source UI component library and design standard. It aims to unify interface patterns, speed design and development, and promote accessibility, internationalization, and responsive web design. It ships as the npm package pcln-design-system with Storybook docs and an MIT license.