Contribute
This project was created by Matthew Trask and Phil Sturgeon with contributions from the community. If you need help, hit Matt or Phil up on twitter.
Current OpenAPI Version
3.0.2 - Link to the specification
Converters
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| api-spec-converter - Convert API descriptions between popular formats such as OpenAPI v2/v3, RAML, API Blueprint, WADL, etc. | JavaScript | ✅ | ✅ |  |
| Apimatic Transformer - Transform API Descriptions to and from RAML, API Blueprint, OAI v2/v3, WSDL, etc. | SaaS | ✅ | ✅ | |
| API Flow - Convert from and to multiple formats. Linking to Phil's fork because the original is completely broken | JavaScript | ✅ | 👷 | |
| Google Gnostic - Compile OpenAPI descriptions into equivalent Protocol Buffer representations | Go | ✅ | ✅ | |
| swagger2openapi - Upgrade specs from OpenAPI v2.0 to v3.0, bundling into one mega file or respecting $refs | Node.js | ✅ | ✅ | |
| OAS RAML Converter - Converts between OAS and RAML API specifications | Node.js | ✅ | ✅ | |
| OData OpenAPI - OData 4.0 to OpenAPI 3.0.0 converter | XSLT | ✅ | ✅ | |
| OpenAPI Filter - Filter internal components from OpenAPI definitions | Node.js | ✅ | ✅ | |
| OData.OpenAPI - Convert an Edm (Entity Data Model) to OpenApi 3.0 | .NET | ❌ | ✅ | |
| pyswagger - Client & converter in Python, which is type-safe, dynamic, spec-compliant. | Python | ✅ | 👷 | |
| odata2openapi - OData 4.0 to OpenAPI 2 converter | Node.js | ✅ | ❌ | |
| OpenAPI Generator - A template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI definition (community-driven fork of swagger-codegen) | Java | ✅ | ✅ | |
| go-swagger - Everything all in one. Parser, validator, generates spec from code, or code from spec! | Go | ✅ | 👷 | |
Documentation
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| APIMatic Developer Experience Portal - Customizable developer portals packed with language specific documentation, client libraries, code samples, an API console and much more. | SaaS | ✅ | ✅ | |
| Kong Enterprise Edition - Highly customizable developer portal with developer onboarding, integrated with the Kong API Gateway | Lua | ✅ | ✅ | |
| LucyBot DocGen - Generate a customizable website, with API documentation, console, and interactive workflows, from an OpenAPI spec | JavaScript | ✅ | ✅ | |
| openapi-viewer - Browse and test a REST API described with the OpenAPI 3.0 Specification | Vue.js | ❌ | ✅ | |
| openapi-ui - React based OpenAPI 3.0+ documentation generator | React.js | ❌ | ✅ | |
| ReDoc - OpenAPI/Swagger-generated API Reference Documentation | React.js | ✅ | ✅ | |
| widdershins - Generate Slate/Shins markdown from OpenAPI 2.0/3.0.x | Node.js | ✅ | ✅ | |
| openapi3-generator - Use your API OpenAPI 3 definition to generate code, documentation, and literally anything you need. | Node.js | ❌ | ✅ | |
| MrinDoc - Open API spec viewer. | Vue.JS | ✅ | ✅ | |
| Stoplight - Create beautiful, customizable, interactive API documentation generated from your OpenAPI Specification, integrated with the Stoplight platform | SaaS | ✅ | ✅ |
Text Editors
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| KaiZen-OpenAPI-Editor - Full-featured Eclipse editor for OpenAPI 2.0 and 3.0, also available on Eclipse Marketplace. | Java | ✅ | ✅ | |
| Atom/linter-swagger - This plugin for Atom Linter will lint Swagger 2.0 specifications or OpenAPI 3.0, both JSON and YAML using swagger-parser node package. | JavaScript | ✅ | ✅ | |
| Swagger Editor - Design, describe, and document your API on the first open source editor fully dedicated to OpenAPI-based APIs. | Node.js | ✅ | ✅ | |
| SwaggerHub - API design and documentation platform to improve collaboration, standardize development workflow and centralize their API discovery and consumption. | SaaS/On-Premise NodeJS | ✅ | ✅ | |
| Senya Editor - Design API specifications fast and effectively in your favorite JetBrains IDE. | Java | ✅ | ✅ | |
| VSCode/openapi-lint - OpenAPI (Swagger) 2.0/3.0.x intellisense, validator and linter for Visual Studio Code | Node.js | ✅ | ✅ | |
GUI Editors
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| RepreZen API Studio - RepreZen API Studio is an integrated workbench that brings API-first design into focus for your whole team, harmonizes your API designs, and generates APIs that click into client apps. | Java | ✅ | ✅ | |
| Apicurio Studio - A standalone API design studio that can be used to create new or edit existing API designs. | TypeScript | ✅ | ✅ | |
| Rápido - An API design tool that facilitates the sketching phase of design. | Node.js | ❌ | ✅ | |
| Stoplight - Stoplight is the Complete OpenAPI Specification Toolkit that leverages your OpenAPI documents to drive the entire API development process | SaaS | ✅ | ✅ |
Mock Servers
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| Connexion - OpenAPI First framework for Python on top of Flask with automatic endpoint validation & OAuth2 support | Python | ✅ | ✅ | |
| Prism - Turn any OAI file into an API server with mocking, transformations, validations, and more. | cli | ✅ | 👷 | |
| Sandbox - SaaS, self-hosted, or CLI tool for turning OpenAPI (and other) definitions into a mock server, where you can modify behaviour, simulate downtime, and any other nonsnese you can think of thanks to a built-in code editor! | SaaS / Java | ✅ | 👷 | |
| Microcks - Mocking and testing platform for API and microservices. Turn your OAI contract examples into ready to use mocks. Use examples to test and validate implementations according schema elements. | Self-hosted / SaaS | ✅ | ✅ | |
| API Sprout - Lightweight, blazing fast, cross-platform OpenAPI 3 mock server with validation | cli / Docker | ❌ | ✅ | |
Server implementations
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| Vert.x Web Api Contract - Create API endpoints with Vert.x 3 and OpenAPI 3 with automatic requests validation | Java, Kotlin, JavaScript, Groovy, Ruby, Ceylon & Scala | ❌ | ✅ | |
| BaucisJS + baucis-openapi3 - Create REST resources with persistence on MongoDB and expose OpenAPI v.3 contracts | JavaScript | ❌ | ✅ | |
| BaucisJS + baucis-swagger2 - Create REST resources with persistence on MongoDB and expose OpenAPI v.2 contracts | JavaScript | ✅ | ❌ | |
| @smartrecruiters/openapi-first - Initializes your API express application with specification in OpenAPI Specification 3.0 format using provided middlewares (parsers, validators, controller, defaults setting) or custom ones | Node.js | ❌ | ✅ | |
| openapi-backend - Build, Validate, Route, and Mock using OpenAPI specification. Framework-agnostic | Node.js | ❌ | ✅ | |
Miscellaneous
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| Sway - A library that simplifies OpenAPI integrations/tooling. | JavaScript | ✅ | 👷 | |
| openapi-diff - Utility for comparing two OpenAPI specifications. | Java | ❌ | ✅ | |
| $ oas (CLI) - Generate OAS files from code comments and easily host them ($ npm install oas -g) | JavaScript | ✅ | ✅ | |
Parsers
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| swagger-parser - Swagger 1.0, 1.1, 1.2, 2.0 to OpenAPI Specification parser | Java | ✅ | ❌ | |
| BigstickCarpet/swagger-parser - Swagger/OpenAPI 2.0 and 3.0 parser and validator. Can also bundle multiple files into one via `$ref`. | Node.js | ✅ | ✅ | |
| KaiZen OpenAPI Parser - High-performance Parser, Validator, and Java Object Model for OpenAPI 3.x | Java | ❌ | ✅ | |
| OpenAPI-TS - TS Model & utils for OpenAPI 3.0.x contracts | TypeScript | ❌ | ✅ | |
| kin-openapi - A Go library for handling OpenAPI 3.0 specifications | Go | ❌ | ✅ | |
| OpenAPI3-Rust - Rust serialization library for OpenAPI v3 | Rust | ❌ | ✅ | |
| psx-api - Parse and generate API specification formats | PHP | ✅ | ✅ | |
| Microsoft/OpenAPI.NET - C# based parser with definition validation and migration support from V2 | .NET | ✅ | ✅ | |
| oas_parser - A Ruby parser for Open API Spec 3.0+ definitions. | Ruby | ❌ | ✅ | |
Schema Validators
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| Speccy - Lint to enforce quality rules on your OpenAPI specifications | CLI | ❌ | ✅ | |
| BigstickCarpet/swagger-cli - A handy cli tool for validating JSON or YAML files schema files that respects $ref | Node.js / CLI | ✅ | ✅ | |
| openapi-spec-validator - OpenAPI Spec validator | Python | ✅ | ✅ | |
| Sway - A library that simplifies OpenAPI integrations/tooling. | JavaScript | ✅ | 👷 | |
| oval - CLI for (O)penAPI Specification document (val)idation. | JavaScript | ✅ | 👷 | |
| Spectral - A flexible JSON object linter with out of the box support for OpenAPI Specification | TypeScript/JavaScript | ✅ | ✅ | |
Data Validators
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| Dredd - Language-agnostic command-line tool for validating API description document against backend implementation of the API | Javascript | ✅ | ✅ | |
| Sway - A library that simplifies OpenAPI integrations/tooling. | JavaScript | ✅ | 👷 | |
| kin-openapi - A Go library for handling OpenAPI 3.0 specifications | Go | ❌ | ✅ | |
Testing
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| Dredd - Language-agnostic command-line tool for validating API description document against backend implementation of the API | Javascript | ✅ | ✅ | |
| Swagger Inspector - Swagger Inspector is a free online tool to quickly execute any API request, validate its responses and generate a corresponding OpenAPI definition. | Self-hosted/SaaS | ✅ | ✅ | |
| Assertible - Import an OpenAPI specification into Assertible to generate tests that validate JSONSchema responses and status codes on every endpoint. | SaaS | ✅ | ✅ |
SDK Generators
| Name | Language | v2 | v3 | GitHub |
|---|---|---|---|---|
| OpenAPI Generator - A template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI definition (community-driven fork of swagger-codegen) | Java | ✅ | ✅ | |
| APIMatic CodeGen - Bring in your API description (OAI v2/v3, RAML, API Blueprint, WSDL, etc.) to generate fully functional SDKs in over 10 languages. | SaaS | ✅ | ✅ | |
| janephp/open-api - Generate a PHP Client API (PSR7 compatible) given a OpenAPI specification. | PHP | ✅ | ✅ | |
| go-swagger - Everything all in one. Parser, validator, generates spec from code, or code from spec! | Go | ✅ | 👷 | |