Modacity - A music practice app that organizes, focuses, and tracks your progress.

Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.

Meludia - Listening exercises and to sharpen your ear and music theory skills

MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.

KDE Minuet - Free music education software, thoughtfully designed to push your musical skills to the next level.

Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.