
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Lucidchart is an online diagramming and visualization software used to create flowcharts, org charts, UML diagrams, ER diagrams, network diagrams, and more. It has drag-and-drop functionality, integration with Office 365 and Google Workspace, real-time collaboration, and shared team folders.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API