
Description: Aria Maestosa is a free, open source MIDI sequencer and editor for Windows. It allows you to compose, record, and edit MIDI files with a user-friendly interface and powerful editing capabilities.
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