It can scan IP addresses and their ports in any range. Cross-platform and lightweight. It does not require any installation, can be freely copied and used anywhere. Angry IP Scanner simply pings each IP address to check if it is alive, then optionally decodes the host name, determines the MAC address, scans its ports, etc. The amount of data collected about each host can be expanded with plugins. It also includes NetBIOS information (computer name, workgroup name and currently logged in Windows user), favorite IP address ranges, web server detection, customizable openers, etc. It also has additional features such as Scan results can be saved in CSV, TXT, XML or IP-Port list files. With the help of plugins, Angry IP Scanner can collect all kinds of information about scanned IPs. Anyone who can write Java code can write plugins and expand Angry IP Scanner's functionality. Angry IP Scanner uses a multi-threaded approach to increase scanning speed. A separate scan thread is created for each scanned IP address. Windows 98/ME/2000/XP compatible version 2.21: https://sourceforge.net/projects/ipscan/files/ipscan2-binary/2.21/ipscan221.exe