Docusaurus

Docusaurus is an open-source static-site generator (SSG) from Meta (formerly Facebook) for building and deploying high-performance documentation websites with React.

Docusaurus is a powerful SSG that streamlines documentation creation: you focus on content in Markdown/MDX, and it handles the architecture. It builds a fast single-page application (SPA), leveraging React for interactive elements and client-side navigation. Key features are built-in: versioning for API docs, internationalization (i18n), and search integration (e.g., Algolia). The framework is highly extensible via a robust plugin system, allowing developers to customize themes and add functionality without building a doc site from scratch.

https://docusaurus.io