EarMaster - Professional software for ear training and practical music theory on Windows and Mac.

Synthesia - A fun way to learn how to play the piano.

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

Playground Sessions - Online piano learning game.

SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.

Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.