
Description: Milkman is an open-source email marketing platform built for developers. It allows you to create and send email campaigns, manage subscribers, track analytics, and integrate with other services via APIs. Key features include drag-and-drop email builders, A/B testing, scheduling, and segmentation tools.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Hoppscotch is a free, fast and beautiful API request builder used to test and document APIs. It allows users to quickly and easily send requests to any API, see the response and even generate code snippets to integrate the API. Great for testing APIs during development or creating documentation.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API