
Description: WebSequenceDiagrams is an online tool for easily creating UML sequence diagrams. It has a simple syntax for defining objects, messages, notes, and other sequence diagram elements. The service is free to use and diagrams can be exported as images.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Gliffy is an online diagram and flowchart software. It allows users to easily create flowcharts, UML diagrams, wireframes, and more. Gliffy has built-in templates, shapes, and connectors to allow for fast diagramming.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API