
Description: Diagram Designer is a free, open-source, cross-platform diagramming software for creating flowcharts, UML diagrams, BPMN diagrams, network diagrams, maps, floor plans, and more. It has an intuitive drag-and-drop interface with a large collection of vector shapes and templates.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: WhiteStarUML is an open-source UML modeling tool for Windows, Linux and Mac. It allows users to create UML diagrams like class, sequence, use case, state machine and activity diagrams. It has basic UML 2.0 compliance and is lightweight and easy to use.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API