
Description: Diagramo is an open-source diagramming and vector drawing software for Windows, Mac, and Linux. It allows users to create flowcharts, UML diagrams, network diagrams, organization charts, ER diagrams, and more. The interface is intuitive with drag and drop functionality.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Pencil Project is a free and open source GUI prototyping and mockup tool. It allows users to create wireframes and prototypes for software interfaces and websites quickly and easily, without programming knowledge.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API