
Description: Twine is an open-source tool for creating interactive, nonlinear stories and games. It allows users to create 'passages' of text or images that link together into branching narratives without needing to write code.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Plotline is a free, open-source data visualization and charting software. It allows users to easily create a variety of 2D and 3D charts and graphs to visualize data. Key features include drag-and-drop interface, templating, exporting, and integration with various data sources.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API