Full-featured DJ and beat mixing system which lets you groove to your own style of DJ music. Professional independent decks, beat-sync display, pitch controls, fast-seek, cue, cross fader, and dozens of sampler decks are among its functionality.
iEasyRecorder is ideal audio recording software for Mac, which can help you record online music, internet radios, any sounds from your computer system and record from microphone, from any Mac applications.
AthTek Free Voice Changer is a handy audio tool for Windows users. It has a very clean interface without any exaggerated color and overstated features. It clearly lists 4 steps for you to obtain the sound effects you want.