Meta made their own shadcn (Astryx)

Meta has open-sourced Asterisk, an internal React component library built on top of StyleX that has been refined across 13,000 internal applications over eight years. It ships with over 150 accessible components and a powerful theming system that generates design tokens from a few high-level inputs like a brand color, typography scale, border radius, and motion speed. Unlike shadcn/ui, Asterisk keeps components in a central package so upstream fixes are automatic, while still allowing deep customization via token overrides, component-level style overrides, and custom variants — all with full TypeScript type safety. It also includes a Tailwind bridge to map theme tokens to Tailwind utility classes, and a CLI designed for AI agents to load component documentation into context. Pre-built themes, SSR support (Next.js), and a playground are also available.