
Description: Systeme.io is an open-source platform for building and managing websites and web applications. It provides an intuitive drag and drop interface for designing sites, along with tools for content management, e-commerce, analytics, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Mailmust is an open-source email tracking application that allows you to see when recipients open your emails and click on links. It is designed for privacy and can be self-hosted.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API