Kontakt - With KONTAKT 6, you can sound like a snare drum, a symphony orchestra, or anything in between, from a universe of sampled instruments.
Synthesia - A fun way to learn how to play the piano.
Pianoteq - Pianoteq is a virtual piano that runs on your computer.
Playground Sessions - Online piano learning game.
Magix Independence Free - Magix Independence Free is a sampler software that allows you to create any type of sound with its 2Gb library.
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.