EarTrumpet - Volume Control for Windows
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Sound Volume Hotkeys - This tool allows to control sound volume using system-wide hotkeys.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
SoundSource - The sound control that should be built into MacOS
LightShot - The fastest way to take a customizable screenshot.