JN Soundboard - An open-source hotkey soundboard program
Voxal Voice Changer - Voxal Voice Changer is the name of an ultimate voice changer that delivers the limitless voice changing options to its users.
Soundplant - Play sound files with the computer keyboard
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
Soundboard Studio - Soundboard Studio lets you take your podcast, live show, gig or performance to the next level.
MorphVOX - MorphVOX is universal voice changing software that is integrated with the functions of sound effects and background tracks.