This blog walk through how to use Swagger / OpenAPI to add API document to the Express.js, node.js framework, it will cover how to create to API at Express.js and add API Document with Swagger by using OpenAPI 3.0 specification. 

This blog is about how to setup Swagger / OpenAPI with Nest.js, a progressive Node.js framework, it will cover how to define few sample API and how to enable Swagger UI at Nest.js.

This walkthrough tutorial is about how to set up Swagger with ASP.NET MVC API by using Visual Studio 2015, also provides steps of how to customize the swagger UI.