
Description: Heyoya is a free, open-source online whiteboard and visual collaboration platform. It allows remote teams to brainstorm ideas, sketch diagrams, annotate documents, and present concepts visually in real-time.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: MUUT is an open-source alternative to Sketch and Figma for interface design. It provides vector graphics editing tools for designing websites, apps, presentations and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API