Little Snitch

Little Snitch is a host-based application firewall for macOS. This Homebrew entry is specifically the nightly variant, packaged as Little Snitch.app; it is not the regular little-snitch cask or the older versioned casks.

• The cask describes the product as a host-based application firewall.
• The installed application is placed in /Applications.
• The official download page lists macOS Sonoma and later among compatible systems; the cask requires macOS 14 or later.
• This cask conflicts with little-snitch, little-snitch@4, and little-snitch@5, so those variants cannot be installed alongside it through Homebrew.

Install with Homebrew on macOS 14 or later:

brew install --cask little-snitch@nightly

Sources: Nightly download page · Homebrew cask