Musescore

MuseScore is a company devoted to helping aspiring musicians in their journey to master the music they love. MuseScore offers free, powerful, and easy-to-use music notation software to create high-quality sheet music, with audio score playback for results that look and sound beautiful. MuseScore has also formed an online community where musicians can share their creations, privately or publicly, through downloads, embeddable widgets, or MuseScore's mobile apps, while also bringing additional social features to sheet music. The MuseScore software is released under an open source license, and there is an open API for third party developers on MuseScore.com.