ReDoc is a documentation general tool. It allows users to generate interactive documentation from OpenAPI definitions and protocols. Redoc comes in a three-panel layout with left, central and right panels. The panels provide scope for search, navigation, and documentation along with accepting requests and responses. ReDoc is available as a live demo for users.

ReDoc is known to provide several deployment options. It is also known for its highly responsive layout. ReDoc is designed to be SSR-ready. It provides scope for integration and comes with customization options as well.  It also allows users to launch a developer portal in a short period.

Docusaurus is an easy-to-use platform which is popular among developers. It is made available by MDX. It is mainly used by developers to create and start high-performing websites with ease. Docusaurus places a strong emphasis on content quality. It is built using React and offers React components. It offers a high degree of scope for customization and extensions. It comes with a pluggable architecture. 

Docusaurus is designed to be translation-ready and support localization goals. It also comes with documentation versioning to offer support on different project versions. Docusaurus also offers a convenient content search facility by way of an Algolia documentation search.

Comparison ReDoc vs Docusaurus