
Description: Marple is a free, open-source Markdown slide deck presenter. It provides a minimalistic, distraction-free interface to focus on content creation. Marple enables creating presentations in Markdown format and presenting them in a clean slide interface.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Retool is a low-code development platform that allows you to build internal tools and business applications quickly without coding. It has a drag-and-drop interface to build workflows, forms, charts, kanban boards and more. Retool connects to databases and APIs so you can integrate data.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API