
Description: Marble is a drag-and-drop email design software that allows anyone to easily create beautiful, responsive email templates without coding. It has an intuitive, user-friendly interface for quickly building and testing emails with custom web fonts and flawless rendering.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Direct mail software helps businesses design, print, and mail marketing materials to targeted customers and prospects. Key features include mail list management, template design and customization, postal automation and integration.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API