
Description: Diagrammix is a free, open-source, and cross-platform diagramming software. It allows users to easily create flowcharts, UML diagrams, network diagrams, wireframes, and more. Key features include a simple and intuitive interface, comprehensive shape libraries, real-time collaboration, and output to various file formats like SVG, PNG, and PDF. Diagrammix is a good alternative for tools like Microsoft Visio and Lucidchart, especially for those seeking an open-source and freely-available option.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: blockdiag is an open-source Python library and command-line tool that generates block-style diagram images from simple text files. It supports multiple diagram types like block diagrams, sequence diagrams, activity diagrams, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API