Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

REST API client library for .NET

Test, scrape, generate, and automate without the pain and expense of hosting your own headless browsers.

Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place

Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

Charles is a HTTP proxy that enables you to see traffic between your machine and the backend