Synthesia - A fun way to learn how to play the piano.
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.
Piano Kit - Search through fingering form presets & create your own original chord forms.
Playground Sessions - Online piano learning game.
Guitar Kit - Search and display fingering chord forms from a huge preset library.
Linthesia - Linthesia is a game. A game of playing music! You only need a MIDI file