You start an application that tells you that a new version is available. You suddenly realize that with every start this application connects to the developer's server. Even statistics information about your computer may be sent this way. Little Snitch helps you avoid this situation.

Trojan horses - i.e. programs transmitting unconsciously data stored on your computer - can be detected by Little Snitch and prevented on the transmission of data.

Features:

  • Prevents applications from "phoning home".
  • Protects you from trojans, worms, and other network parasites.
  • Shows which applications send information over the internet.
  • Provides a higher level of security for the paranoid.

What's New:

Redesigned for macOS Big Sur

The main focus in the development of Little Snitch 5 was on the integration of the new network filter technologies introduced by Apple in macOS Big Sur. The underlying filter engine was re-built from ground up to replace the previous kernel extension based approach which is no longer supported by macOS.

Furthermore, Little Snitch was adapted to the new, elegant design language of the operating system with great attention to detail. New design features, like a prominent search bar and a newly structured sidebar go beyond aesthetic choice and add a level of simplicity and intuitiveness to the user experience.

Drag and Drop Installation

The simplified Drag and Drop installation has been eagerly awaited by many users. Now it's no longer necessary to restart the computer in order to install or update Little Snitch.

Improved Traffic Monitoring

Little Snitch now captures connection information efficiently in the background. It no longer requires the Network Monitor application to be running in order to collect this information, resulting in reduced memory and CPU consumption.

The improved monitoring system is now capable of holding traffic information from up to a whole year, instead of only the last hour as before.

Command Line Interface

System administrators now have the ability to configure a variety of program settings via a command line interface, making Little Snitch scriptable for the very first time.

This interface now also offers the possibility to report network connections in a log-based format for detailed and versatile traffic analysis.