TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
Sound Control - App-specific volume control
AnyDesk - AnyDesk is the world's most comfortable remote desktop application. Access all your programs, documents and files from anywhere, without having to entrust your data to a cloud service.
EarTrumpet - Volume Control for Windows
join.me - Instant screen sharing. Instant Aha!
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.