Redocly

Redocly is an API documentation platform that transforms OpenAPI specifications into polished, responsive, and developer-friendly documentation. It builds on the popular open-source Redoc renderer to offer a full-featured solution for creating API reference docs and developer portals that go well beyond basic Swagger UI output. Redocly's toolset spans three main components. Redoc is the free, open-source API documentation renderer that generates a clean, three-panel documentation layout from any OpenAPI specification. It supports nested object schemas, code samples, and a responsive design that works well on both desktop and mobile. The Redocly CLI extends the workflow with API linting, bundling, and validation commands that catch specification errors and enforce style guidelines before documentation is published. The commercial Redocly platform provides a complete developer portal solution that combines API reference documentation with Markdown-based guides, tutorials, and landing pages. It includes a try-it console for interactive API testing, custom theming to match brand guidelines, and versioning to maintain documentation across API releases. Redocly is best suited for API product teams and developer relations groups that need to present their API documentation with a level of polish and branding that standard Swagger UI cannot achieve. Companies offering public APIs, where the documentation experience directly influences developer adoption, benefit most from Redocly's emphasis on visual presentation and navigation. Backend teams maintaining internal APIs can also use the free Redoc renderer to provide clear reference documentation without the overhead of a commercial platform. Redoc, the open-source renderer, is free under the MIT license and can be self-hosted or embedded in any website. The Redocly CLI is also free for most use cases. The Redocly platform, which includes the developer portal, try-it console, and team collaboration features, uses a tiered pricing model with plans starting at approximately $69 per month for basic portal features. Enterprise plans add SSO, custom domains, and advanced access controls. Teams evaluating Redocly should note that it currently supports only OpenAPI specifications and does not handle GraphQL or gRPC documentation natively.