
Description: StackEdit is an open-source online Markdown editor with a variety of writing, formatting, and exporting capabilities. It offers real-time preview, syntax highlighting, Markdown extensions, and the ability to publish documents.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Heynote is a free, open-source alternative to Microsoft PowerPoint. It allows users to create visually appealing presentations with slides, animations, themes, and more. Heynote is lightweight, customizable, and works across platforms.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API