
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: Yarn Spinner is an open-source dialog engine for games. It allows developers to write character dialogue in YAML files and integrate it into Unity games using C# code. Key features include a node-based conversation editor, localization support, and options for branching dialog.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API