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

REST API client library for .NET

API Testing Platform that automatically generates unit test cases with dependency mocks from API calls

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.

Hand-crafted lightweight Rest Client for testing APIs. Supports collections, environments, git collaboration and local storage.

Puppeteer is a Node.js library which provides a high-level API to control Chrome/Chromium over the DevTools Protocol.