Volume Mixer, EarTrumpet, Sound Control, Sound Lock, Background Music, Volwheel, Audio Sliders, MIDI Mixer, Sound Volume Hotkeys, Volti, A-Volume Widget, Volume Scroll, SoundBunny, 3RVX, App Volume Control, Power Mixer, Volumouse, Easy Volume Control, KMix, QasTools, Volume Scroller, Ear Candy, VolumeOSD are some alternatives to Volume2.