
Description: Youka is an open-source note taking and knowledge management software. It allows users to organize notes, tasks, web pages, documents and more in an intuitive notebook-style interface to improve productivity. Youka integrates with many cloud services for seamless syncing and collaboration.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: UltraStar Deluxe is a free and open source karaoke singing game. It allows users to sing along to music tracks and scores them based on accuracy. Supports many customizable features, has an active community, and works on Windows/macOS/Linux.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API