
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: eM Client is an easy to use email client for Windows that supports POP3, IMAP, Exchange ActiveSync and other protocols. It has a clean and intuitive interface with customization options, email encryption, calendar and contacts.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API