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Little Snitch
Host-based application firewall
Security & PrivacyFree
v6.3.3
Install with Homebrew
brew install --cask little-snitchHow to Install Little Snitch on Mac
Follow these steps to install Little Snitch using Homebrew, the most popular package manager for macOS. This works on both Apple Silicon (M1/M2/M3/M4) and Intel Macs.
- 1
Open Terminal
Launch Terminal from your Applications > Utilities folder, or press Cmd + Space and type "Terminal".
- 2
Install Homebrew
If you don't have Homebrew yet, paste the install script from brew.sh into Terminal and follow the prompts.
- 3
Run
brew install --cask little-snitchPaste the following command into Terminal and press Enter:
brew install --cask little-snitch - 4
Verify Installation
Run `brew list` to confirm little-snitch is installed, then try `little-snitch --version` to check the version number.
- 5
Launch Little Snitch
Run `little-snitch` in your Terminal to start using it.
Troubleshooting
- • If you see a permission error, try prefixing the command with
sudo. - • If Homebrew can't find the package, run
brew updatefirst to refresh the package list. - • On Apple Silicon Macs, make sure Homebrew is installed at
/opt/homebrew(the default for M-series chips).
What is Little Snitch?
Host-based application firewall
Key Features
Easy installation via Homebrew
Regular updates and maintenance
Free to use
Professional support available
Pros
- ✓Simple one-command installation
- ✓Well-maintained and regularly updated
- ✓Completely free to use
Cons
- ✗Requires Homebrew to be installed
- ✗macOS only
Frequently Asked Questions about Little Snitch
Open Terminal, install Homebrew if you haven't already (visit brew.sh), then run `brew install --cask little-snitch`. The app will be downloaded and installed automatically. You can then run `little-snitch` from Terminal.
