Freemium
Stoplight
Visual platform for designing, documenting and mocking OpenAPI
API DesignAPI design and docs platform
Alternatives to Swagger
12 tools like Swagger, chosen by what they do. About Swagger
Open source
OpenAPI
Open standard for describing HTTP APIs in a machine-readable way
API DesignThe OpenAPI standard
Open source
OpenAPI Generator
Generates API clients, server stubs and docs from OpenAPI
Design and SDKsGenerate clients from OpenAPI
Open source
Zod
TypeScript-first schema validation with static type inference
API DesignTypeScript schema validation
Open source
Swagger UI
Interactive API docs rendered from an OpenAPI specification
API DocsInteractive API reference
Free trial
Curated
Bump.sh
Hosted API docs and MCP servers, built from your OpenAPI spec
Design and SDKsAPI docs with changelogs
Open source
Scalar
Hosted API docs, typed SDKs and MCP servers from an OpenAPI file
Design and SDKsModern OpenAPI docs and client
Freemium
Apidog
All-in-one API platform for design, testing, mocking and docs
API ClientsAll in one API platform
Freemium
Fern
Generate SDKs, API docs and a CLI from an OpenAPI spec
Design and SDKsSDKs and docs from your API
Open source
Freemium
Apiary
Hosted platform to design, prototype, document and test APIs
Design and SDKsAPI design and docs platform