
Description: Sequencer64 is an open-source, MIDI music sequencer for Linux. It allows users to compose and edit multi-track MIDI music using a GUI and MIDI input devices. Sequencer64 aims to be simple, streamlined and efficient.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Qtractor is an open-source digital audio workstation application designed for audio recording, editing and managing MIDI and audio Sequencer. It features unlimited audio and MIDI tracks, supporting a variety of plugins and effects, as well as LASH session sharing.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API