How to: API Development and Analysis
* [bruno](https://www.usebruno.com/) - Bruno is a offline-only, fast and git-friendly opensource API client.![Freeware][Freeware Icon]
* [Cocoa Rest Client](https://mmattozzi.github.io/cocoa-rest-client/) - Free, open-source, native Apple OS X app for testing HTTP/REST endpoints. [![Open-Source Software][OSS Icon]](https://github.com/mmattozzi/cocoa-rest-client) ![Freeware][Freeware Icon]
* [HTTPie](https://httpie.io/) - HTTPie is making APIs simple and intuitive for those building the tools of our time. ![Freeware][Freeware Icon]
* [Hoppscotch](https://docs.hoppscotch.io/documentation/clients/desktop) - A lightweight, fast, and full-featured API debugging tool. [![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]](https://github.com/hoppscotch/hoppscotch)
* [Insomnia](https://insomnia.rest/) - The most intuitive cross-platform REST API Client. [![Open-Source Software][OSS Icon]](https://github.com/getinsomnia/insomnia) ![Freeware][Freeware Icon]
* [Katalon Studio](https://www.katalon.com) - Simplify API, Web, and Mobile Automation Tests. ![Freeware][Freeware Icon]
* [Maestro](https://maestro.dev/) - End-to-end testing for Mobile and Web apps. Supports iOS, Android, React Native, Flutter and more. [![Open-Source Software][OSS Icon]](https://github.com/mobile-dev-inc/maestro) ![Freeware][Freeware Icon]
* [Mockoon](https://mockoon.com/) - Create mock APIs in seconds. [![Open-Source Software][OSS Icon]](https://github.com/mockoon/mockoon)
* [Paw](https://paw.cloud/) - Advanced HTTP client.
* [Postman](https://www.getpostman.com) - GUI platform for API development. ![Freeware][Freeware Icon]
* [Reqable](https://reqable.com) - Next-Gen API Development Tool, Advanced API Debugging Proxy and REST Client. ![Freeware][Freeware Icon]
* [ReqRes](https://reqresapp.com/) - Native macOS app to monitor, debug, and mock HTTP(S) requests and responses. [![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]](https://github.com/OloApps/ReqRes)
* [Requestly](https://requestly.io) - Open-source, lightweight Git-Friendly API Client built for modern developers. [![Open-Source Software][OSS Icon]](https://github.com/requestly/requestly) ![Freeware][Freeware Icon]
* [Trayce](https://trayce.dev) - Lightweight tool to monitor Docker container traffic with a built-in .bru HTTP client. [![Freeware][Freeware Icon] ![Open-Source Software][OSS Icon]](https://github.com/evanrolfe/trayce_gui)
* [Yaak](https://yaak.app) - A modern API client supporting multiple protocols, offline usage, and Git integration. [![Open-Source Software][OSS Icon]](https://github.com/mountain-loop/yaak)