MuseScore

MuseScore Studio is a free, open‑source application for creating, editing, and printing sheet music. It runs on Windows, macOS and Linux and supports input via MIDI keyboard as well as traditional mouse and keyboard entry. The program can export and import scores using common formats such as MusicXML and MIDI, allowing interoperability with other music software.

The software is aimed at a broad range of users, including students, teachers, choirs, orchestras, and composers who need a reliable tool for writing piano, guitar, jazz, band, marching‑band, and other types of music. Its community‑driven development model provides translations into many languages and regular updates, with the latest stable release being version 4.6.5 and a beta of 4.7 available.

Key features include a graphical notation editor, playback of the written score, and support for soundfonts and plugins. Because it is open source, users can inspect, modify, and extend the code without licensing restrictions.