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

Description: SequenceDiagram.org is a free online tool for creating UML sequence diagrams. It allows users to visually represent the interactions between objects in a system. The tool is easy to use with a simple drag and drop interface.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API