GSnap - With GSnap you can get an auto-tune effect.
Livetraker Audio Midi Player - LiveTraker is a audio / midi / text player specifically designed for live performance on stage
Revoice Pro - Revoice Pro is an audio plugin used for vocal tuning, time correction and ADR.
Jingle Palette - Jingle Palette application was designed to be an instant jingle player for radio broadcast studios.
Voxal - Modify your voice in any application that uses a microphone. From girl to alien, the voice options for online video games, avatars and podcasts are limitless.
Cue Player - Cue Player software for theater sound and lighting