Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
AutoHotkey - The ultimate automation scripting language for Windows.
Sound Control - App-specific volume control
Pulover’s Macro Creator - Pulover’s Macro Creator is a Free Automation Tool and Script Generator.
Power mixer - Power Mixer is a complete Windows volume control replacement.
AutoKey - A Python 3 port of AutoKey, the desktop automation utility for Linux and X11.