
Description: PlantUML is an open-source tool for creating UML diagrams from plain text. It supports all standard UML diagrams like use case diagrams, class diagrams, sequence diagrams, etc. PlantUML allows users to write simple textual descriptions which are then transformed into UML diagrams.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Aspose.Diagram for .NET is an API that allows developers to work with Microsoft Visio diagrams and files in .NET applications without requiring Visio to be installed. It supports features like diagram creation and manipulation, conversion between VSDX, VSD, VSSX, VSTX, and other formats, and rendering diagrams to images.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API