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
QLab - QLab, Live show control for Mac OS X.
Clownfish Voice Changer - Clownfish Voice Changer is multiple voice changing software for various chatting and gaming platforms.
Cue Player - Cue Player software for theater sound and lighting
GSnap - With GSnap you can get an auto-tune effect.
MadMapper - The Mapping Software