Captain Chords - Write chord progressions in your favorite DAW
MuseScore - 24 Sep 2012 . Design a homepage that captures attention and serves as a good starting point for navigating the website.
Odesi - ODESI is a music sketchpad that exports your projects to Audio and MIDI.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
TuxGuitar - A Multitrack tablature editor and player.