
Description: Frescobaldi is an open source music notation program designed for editing LilyPond files. It provides a simple but powerful graphical interface for writing sheet music with advanced text editing capabilities for LilyPond markup language.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Capella is an open-source requirements engineering, architecture, and system modeling tool. It allows users to model complex systems using various diagrams and perform analyses. Capella is designed to handle large, complex projects and is often used in automotive, aerospace, defense, and other engineering industries.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API