
Description: CrossBox is an open-source web application testing tool that allows you to test web apps across multiple browsers and platforms. It is an alternative to commercial tools like BrowserStack and Sauce Labs.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Zarafa is an open source groupware suite that includes email, calendars, contacts, tasks and more. It aims to be a full-featured Exchange alternative for businesses and organizations.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API