The utility allows you to block traffic in different applications. With the help of Little Snitch you can in real time to monitor any outgoing connections and one program may be connected, while others prohibit connectivity, making them into a kind of an internal list of Little Snitch or technically speaking, creating a set of rules on the basis of which the Little Snitch will open or close outbound access to programs installed on your Mac. Utility is a must when you first run unknown programs. It is also often used by amateur warez-blocking software alert when an application wants to transmit information about themselves on a home server.
Track background activity As soon as your computer connects to the Internet, applications often have permission to send any information wherever they need to. Little Snitch takes note of this activity and allows you to decide for yourself what happens with this data.
Control your network Choose to allow or deny connections, or define a rule how to handle similar, future connection attempts. Little Snitch runs inconspicuously in the background and it can even detect network-related activity of viruses, trojans, and other malware.