SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Voicemod - What are the voice changers? How do these work? Are these illegal? What is a soundboard? Find all the answers here. Voicemod - The Best FREE Voice Changer
keezy - A colorful soundboard. Play with music.
Clownfish Voice Changer - Clownfish Voice Changer is multiple voice changing software for various chatting and gaming platforms.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
GSnap - With GSnap you can get an auto-tune effect.