Sound Control - App-specific volume control
7+ Taskbar Tweaker - 7+ Taskbar Tweaker allows you to configure various aspects of the Windows taskbar.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
TaskbarX - TaskbarX gives you control over the position of your taskbar icons.
EarTrumpet - Volume Control for Windows
TranslucentTB - TranslucentTB make Windows Taskbar transparent