Headspace - Meditation made simple. Brilliant things happen in calm minds.
EarTrumpet - Volume Control for Windows
Synctuition Meditation Program - Synctuition Meditation Program is a world’s most leading meditation app that comes with brand new 3D sounds that enhance the quality of sleep significantly.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
Calm - Calm.com can help you reduce stress and increase calm.
Sound Control - App-specific volume control