Homebrew formulae for Headroom.
brew install --cask vrjo/tap/headroomInstalling through Homebrew removes the download quarantine flag, so macOS does not show the "Apple could not verify this app is free of malware" warning that appears with a manual download. The app is not notarised — notarisation requires a paid Apple Developer Program membership.
brew uninstall --cask headroom # remove the app
brew uninstall --zap --cask headroom # remove the app and its recorded history