Angry IP Scanner (or simply ipscan) is an open-source and cross-platform network scanner designed to be fast and simple to use. It is widely used by network administrators and just curious users around the world, including large and small enterprises, banks, and government agencies. It is used to scan IP addresses and ports as well as has many other features. Being supportive for cross-platforms, it runs on Linux, Windows, and Mac OS X, possibly supporting other platforms as well.