
Description: Papyrus UML is an open-source UML modeling tool based on Eclipse. It allows developers to create UML diagrams like use case, activity, class, sequence, and more. Papyrus aims to provide an advanced environment for editing, visualization and coding of UML models.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: SEQO is an open source alternative to Microsoft Visio for creating diagrams and visualizations. It provides a simple drag-and-drop interface for building flowcharts, UML diagrams, network diagrams, floor plans, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API