sound-control

Install command: 
brew install --cask sound-control

Name: Sound Control

Per-app audio controls

https://staticz.com/soundcontrol/

Cask JSON API: /api/cask/sound-control.json

Cask code: sound-control.rb on GitHub

Current version: 3.3.2

Requirements: macOS >= 11

Analytics:

Installs (30 days)
sound-control 20
Installs (90 days)
sound-control 78
Installs (365 days)
sound-control 340