Monect - Make the best use of sensors on smart device to control PC, simulate steering wheel, game-pad...
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
Wifipad - WifiPad transforms your iPhone/iPod Touch into a wireless gamepad.
Sound Control - App-specific volume control
aGamepad - aGamepad allows you to use your Android based phone as gamepad for Windows.
Power mixer - Power Mixer is a complete Windows volume control replacement.