SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
GSnap - With GSnap you can get an auto-tune effect.
keezy - A colorful soundboard. Play with music.
Revoice Pro - Revoice Pro is an audio plugin used for vocal tuning, time correction and ADR.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
CrispyTuner - Fully featured vocal tuning suite.