
Description: FossaMail is an open-source, self-hosted email server that emphasizes security, privacy, and ease of use. It is designed to be installed on your own server or virtual private server (VPS).
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Zimbra Desktop is an open source email and calendar client that connects to Zimbra Collaboration servers. It provides access to email, contacts, calendar, tasks, and notes across multiple accounts in one interface.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API