Angry IP Scanner is a Free, Open Source and Cross Platform network scanner designed to be fast and simple to use, compatible with Windows, Linux, and Mac OS X. It is extensible, allowing it to be used for very wide range of purposes.
It scans IP addresses and ports as well as has many other features. It is widely used by network administrators and just curious users around the world, including large and small enterprises, banks, and government agencies.
[advt]It can scan IP addresses in any range as well as ports. Angry IP scanner simply pings each IP address, then resolves the hostname, determines the MAC address, scans ports, etc. It also has additional features, like NetBIOS information, favorite IP address ranges, web server detection, customizable openers, etc.
Scanning results can be saved to CSV, TXT, XML or IP-Port list files. Anybody who can write Java code is able to write plugins and extend functionality of Angry IP Scanner. It uses multi-threaded approach to increase speed.