A curated comparison of 16 React UI component libraries organized by use case: comprehensive design systems (Material UI, Ant Design, Chakra UI), Tailwind-compatible options (Shadcn UI, Headless UI, DaisyUI), unstyled primitives (Radix UI, React Aria, Base UI), rapid prototyping tools (Mantine, HeroUI, PrimeReact), and specialized solutions. Covers evaluation criteria including bundle size, TypeScript support, theming capabilities, accessibility compliance, and framework compatibility. Provides guidance on choosing based on design constraints, customization needs, and stack requirements.