Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

Percy is a visual testing and monitoring tool that focuses on detecting visual changes in web applications

Bruno is a Fast and Git-Friendly Opensource API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.

Hosted System Status Pages Fully customizable, featuring incident tracking, subscriber notifications, and much more

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

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.