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

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

Fully integrated API and web service testing capabilities that automate end-to-end functional API testing.

Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.

Fast, easy and reliable testing for anything that runs in a browser, Cypress is the new standard in front-end testing that every developer and QA engineer needs.

RapidAPI for Mac is a full-featured HTTP client that lets you test and describe the APIs you build or consume. It has a beautiful native macOS interface to compose requests, inspect server responses, generate client code and export API definitions.