
Description: Gaphor is an open-source modeling tool for UML diagrams and SysML. It allows users to create diagrams like use case diagrams, class diagrams, state machines, activity diagrams and more. Gaphor aims to be easy to use with an intuitive user interface.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: UMLGraph is an open-source Java tool that takes text written in a simple graph format and renders it into a UML diagram. It supports class diagrams, use case diagrams, object diagrams, state diagrams, component diagrams, deployment diagrams and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API