Open Source C++ MIDI Software for Windows

Official development of GrandOrgue has moved to GitHub, please visit https://github.com/GrandOrgue/grandorgue that is our new home! GrandOrgue is a sample based pipe organ simulator. When connected to MIDI keyboards and an audio system, it can accurately simulate the sound of a real pipe organ. This application has builds for Linux, Windows and OS X.

VMPK is a virtual MIDI piano keyboard for Linux, Windows and OSX. Based on Qt and Drumstick the program is a MIDI event generator using the computer's alphanumeric keyboard and the mouse. It may be used also to display received MIDI notes.

MuseScore is a free and open-source music notation software designed for composers, arrangers, educators, and musicians of all levels. It allows users to write, edit, and print professional-quality sheet music with no limitations or subscription fees. MuseScore Studio supports a wide range of instruments and ensembles, from solo piano and guitar to full orchestras and choirs. The software is easy to learn while still offering powerful tools for advanced notation and score layout. With support for MIDI input and formats like MusicXML and MIDI, MuseScore integrates smoothly with other music software and workflows. Built by a global open-source community, MuseScore continues to evolve through active development and community contributions. Support MuseScore at http://musescore.org/en/donate