EarTrumpet - Volume Control for Windows
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
Voicemeeter Banana - VoiceMeeter Banana, the Advanced Virtual Audio Mixer by V.Burel
Volwheel - VolWheel is a little application which lets you control the sound volume easily through a tray icon...
iVol - iVol is a program you can use to adjust the sound volume of your computer in an extremely easy way.
Volume Icon - Volume Icon aims to be a lightweight volume control that sits in your systray.