1)   Blaze Audio Voice Cloak 1.1
A voice changer on voice over IP (VOIP), and instant messaging software including Yahoo Messenger (YM), AOL, IM, MSN Messenger and ICQ. There's no limit to the fun you will have with our voice change tool for all IM chat and voice over internet!
voice change software, change voice, Real Time Voice Changer, Voice Morpher, Voice Disguise, Sound Effects, voice over ip, voice over internet, yahoo messenger tools, instant messaging software,

 2)   AV Voice Changer Software Diamond Edition
Disguise voice in voice chat / PC Phone; Enhance voice quality; Simulate voices with Voice Comparator; Apply effects to customize music; Record from microphone, internet - streaming audio; Support mp3, wma, wav, ogg; Work online/offline/realtime
voice chat, voice recorder, voice mask, voice disguise, audio effect,

 3)   Vodi 3.0
Vodi is a tool for modifying pitch, timbre, duration and adding audio effects. Vodi supports independent pitch and timbre modification in the real sense as opposed to other software tools for voice modification.
voice changer, voice disguise, speech modification, audio effects,