FumaDocs

Documentation framework for React that is fast, flexible, and composes seamlessly into any React application. Delivers a headless architecture where you pick content sources, core logic, and UI pieces to build exactly the documentation site you need, instead of rebuilding from scratch each time.

Adopted by teams at Unkey, Vercel, and Orama, and endorsed by the creator of Shadcn UI, Million.js, and Arktype. Fumadocs stands out as a composable, headless framework for docs: Content, Core, and UI are separated, so you can use it as a library or plug your own theme, similar to how Shadcn treats UI components. Works with Next.js, TanStack Start, React Router, and Waku, and integrates with any CMS or content source.

Key capabilities:

• Native Markdown and MDX with Shiki syntax highlighting, codeblock groups, callouts, cards, and auto table of contents
• Headless Core for content source adapters, document search, and Markdown extensions without committing to a preset layout
• OpenAPI docs rendering and Story, an interactive playground for showcasing UI components
• CMS integrations for Sanity, BaseHub, and Payload, plus local MDX content collections
• CLI for layout customization, theme tweaks, and installing UI components on demand
• Search integration with Orama and Algolia

Fits component library documentation with live playgrounds, API docs generated from OpenAPI specs, product documentation for SDKs and startups, and internal wikis backed by a headless CMS.