EarTrumpet - Volume Control for Windows
Babyphone Wifi - This app turns your old Android phone into a baby monitor.
Sound Control - App-specific volume control
Baby Monitor 3G - Turn any two Android, iOS or Mac devices into one single baby monitor. Easy to use, reliable, feature rich and with an unlimited reach!
Power mixer - Power Mixer is a complete Windows volume control replacement.
BabyTime - Baby activity recording and monitoring app.