CasterSoundboard - A soundboard for hot-keying and playing back sounds. (For podcasting)
Voxal Voice Changer - Voxal Voice Changer is the name of an ultimate voice changer that delivers the limitless voice changing options to its users.
JN Soundboard - An open-source hotkey soundboard program
MorphVOX - MorphVOX is universal voice changing software that is integrated with the functions of sound effects and background tracks.
Soundplant - Play sound files with the computer keyboard
Clownfish Voice Changer - Clownfish Voice Changer is multiple voice changing software for various chatting and gaming platforms.