Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.

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

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

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.

Monitor network requests and API failures with real-time insights

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.