IndieVolume - IndieVolume makes Windows programs use separate volume controls independent of other Windows...
EarTrumpet - Volume Control for Windows
Virtual Audio Cable - Ever wanted to record your speaker output? (loopback) This is for you.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
Soundflower - Soundflower is a Mac OS X system extension that allows applications to pass audio to other...
3RVX - 3RVX is a skinnable volume display and controller.