
Description: Runestone is an open-source e-learning platform for writing interactive textbooks in Python. It allows authors to create web-based course content with assignments, visualizations, active code, and more to teach programming.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: VSCodium is an open source alternative to Microsoft Visual Studio Code editor. It is based on the same codebase as VS Code but without any telemetry or tracking. VSCodium offers the same features as VS Code such as debugging, extensions, customization.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API