Mutify - Use a shortcut on any Mac device to mute your microphone
Keysmith - Create custom keyboard shortcuts for your Mac and the web
Smart Tab Mute - Ensures that only one tab is playing sound at the same time
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Spotify Ad Blocker - Mutes Spotify (and only Spotify) during ads. Portable, with a minimal UI via tray icon.
SureOrNot - Automatically detect whether a shared article is outdated