Mockoon is the easiest and quickest way to design and run mock REST APIs.

Automate API workflows. Chain HTTP requests. Validate. Zero code.

A test framework for testing bash scripts

REST API client library for .NET

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.