Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
EarTrumpet - Volume Control for Windows
Sonos One - A self-contained, Alexa-connected speaker from Sonos
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
SYMFONISK - A new speaker lamp by Sonos and IKEA
Sound Control - App-specific volume control