Kong is an open-source API gateway and platform that acts as middleware between compute clients and the API-centric applications.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
PHP is a general-purpose scripting language used for web development.
Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate documentation from a Swagger-compliant API.
Unpkg is a content delivery network for everything on npm.