DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
Sound Control - App-specific volume control
Mizage Divvy - Divvy is an entirely new way of managing your workspace.
Volume Scroll - Volume Scroll lets you control your main volume by hovering with your mouse cursor over the top...