
Description: music21 is an open-source Python toolkit for computational musicology. It can help analyze, search, and transform musical scores with features like chord identification, key detection, and more. Useful for musicians, musicologists, and researchers.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Denemo is an open-source music notation editor for Linux that allows you to quickly and easily create musical scores. It supports standard notation, guitar tablature, and lyrics.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API