Audiveris
Audiveris is an open source tool for optical music recognition.
It allows a user to import scanned music scores and export them to MusicXML format for use in other applications, e.g. music notation programs or page turning software for digital sheet music.
Audiveris is written in Java and published as free software.
Audiveris V4 was published 26 November 2013 on the basis of Java Web Start under the terms of the GNU General Public License. The source code of legacy versions as well as current development has moved to and is available under the terms of the GNU Affero General Public License.