Spectra UI: an open-source UI components

Spectra UI is an open-source React component library built with Next.js, TypeScript, and TailwindCSS. It’s designed for speed, accessibility (WCAG 2.1), and developer freedom, with tree-shaking optimization that keeps applications lightweight and efficient.

The library includes a CLI for one-command component installation, pre-built customizable components, support for React Server Components, and CSS-in-JS patterns for design flexibility. Its accessibility-first approach ensures every project can deliver inclusive user experiences without extra effort.

Spectra UI helps developers move quickly without sacrificing control. It works out of the box for rapid prototypes but also scales to enterprise-grade applications. Actively maintained and open to contributions, it is already gaining adoption among teams that value performance, accessibility, and a smooth developer experience.