Complete, compliant and well tested module for implementing an OAuth2 Server/Provider with express in node.js

The AsyncAPI specification allows you to create machine-readable definitions of your asynchronous APIs.

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

Convert Swagger 2.0 definitions to OpenAPI 3.0 and resolve/validate/lint

🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format

The OpenAPI Specification Repository