Swagger
Swagger is an open-source framework by SmartBear for designing, building, documenting, and consuming RESTful APIs using the OpenAPI Specification. Originally created by Wordnik in 2011, Swagger became the OpenAPI Specification (OAS) in 2016 under the OpenAPI Initiative. The Swagger toolset includes Swagger UI for interactive documentation, Swagger Editor for writing OpenAPI specs, and Swagger Codegen for generating client SDKs and server stubs. The latest OpenAPI standard version is 3.2.0 (released September 2025).
APIs
Swagger UI
Swagger UI renders OpenAPI specifications as interactive API documentation, allowing developers to explore and test API endpoints directly in the browser. It generates a rich HT...
Swagger Editor
Swagger Editor is a browser-based editor for writing and validating OpenAPI and AsyncAPI specifications with real-time preview and validation. Available as a standalone web appl...
Swagger Codegen
Swagger Codegen generates server stubs, client SDKs, and API documentation from OpenAPI specifications in over 40 languages including Python, Java, JavaScript, Go, Ruby, C#, Swi...
Swagger Parser
Swagger Parser (swagger-parser) is a JavaScript library for parsing, validating, and dereferencing OpenAPI 2.0 and 3.x specifications. Available as an npm package.
OpenAPI Specification
The OpenAPI Specification (formerly Swagger Specification) is a language-agnostic standard for describing HTTP APIs. The current versions are OAS 3.1.1 (stable) and OAS 3.2.0 (l...